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Template Revision 2.1

Design Name always "TE Series Name" + optional CPLD Name + "CPLD"

Change List 2.0 to

Change List 1.9.1 to

Date	Version	Changes	Author
2023-02-07	2.2	added column 'Firmware release' in 'Document Change History' table changed template revision from list to table	ma
-	2.1	Fix problem with pdf export and side scroll bar

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2.0

add fix table of content
add table size as macro
removed page initial creator

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Overview

CPLD Device with designator U21: LCMX02-256HC

Feature Summary

JTAG routing
Boot Mode settings
LED

Firmware Revision and supported PCB Revision

See Document Change History

Product Specification

Port Description

Name / opt. VHD NameDirectionPinPullup/DownBank PowerDescription

Note:

PCB REV04 REV05 Connection

Note:
PCB REV01 REV02 ConnectionC_TCK in30DOWN3.3VINJTAG B2BC_TDI in32DOWN3.3VINJTAG B2BC_TDO out1DOWN3.3VINJTAG B2BC_TMS in29DOWN3.3VINJTAG B2BRST_EN inout27NONE3.3VINReset pin output to reset FPGA via CPLD chip

For PCB REV04 EN1(input) (pulled up in CPLD) / For PCB REV05 REST_EN(output) (Floating in CPLD)

Power Enable from B2B Connector (Positive Enable) (input pin) for PCB revision 04 in this case used only for PGOOD feedback / Reset pin (output pin) for PCB revision 5 in this case this pin is reset pin that is activated by firmware and not by hardware after changing the boot mode via software.

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CPLD Device with designator U46: 10M08SAU169

Warning
For use with the TEBT0865-01 carrier board a small hardware patch on TEBT0865-01 is required. PCN-20240909 TE0865-02 CPLD Firmware Update / TEBT0865-01 Hardware Patch

Feature Summary

JTAG_UART
Power management
Reset
I2C

Firmware Revision and supported PCB Revision

See Document Change History

Product Specification

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Port Description

Name / opt. VHD Name	Direction	Pin	I/O Bank	Pullup/Down	I/O Standard	Current Strength	Description
JTAGEN	in	E5		--	3.3V		fixed to 3.3V
TCK_MAX10	in	G2		--	2.5V (default)	12mA (default)	JTAG
TMS_MAX10	in	G1		--	2.5V (default)	12mA (default)	JTAG
TDO_MAX10	out	F6		--	2.5V (default)	12mA (default)	JTAG
TDI_MAX10	in	F5		--	2.5V (default)	12mA (default)	JTAG

PG_1V2_PL_DDR	in	H5	2	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from TPS82130 (U24) open drain output, pull-up resistor needed PG: PG_+1.2V_PL_DDR EN: EN_+1.2V_PL_DDR VOUT: +1.2V_PL_DDR
PG_VCCINT	in	N3	2	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from LTM4700 (U20) open drain output, pull-up resistor needed PGOOD0/1: PG_VCCINT RUN0/1: EN_VCCINT
LTM_FAULT	in	N2	2		3.3V LVCMOS	2mA (default)	FAULT signal from LTM4700 (U20) open drain input and output, pull-up resistor needed FAULT0/1: LTM_FAULT
M_SDA	inout	M3	2	--	3.3V LVCMOS	2mA (default)	connected to level shifter TXS0102 (U12) connected to EEPROM 24AA025 (U14) connected to SLS32AIA (U16) connected to ATECC608B-MAH (U19) connected to LTM4700 (U20)
EN_SOM	in	K1	2	weak pull-up	3.3V LVCMOS	2mA (default)	EN_SOM input_signal in TEBT0865: SC_EXT4 signal connected to J2B (D54)
SC_EXT_3	in	L2	2	--	3.3V LVCMOS	2mA (default)	SC_EXT3 input signal connected to J2B (D53) in TEBT0865: Overcurrent Signal from TPS2051 (U9) not used in CPLD
EN_VTT_PL_DDR	out	J2	2	--	3.3V LVTTL	8mA (default)	Enable signal for TPS51206 (U26) S3/S5: EN_VTT_DDR_PL VTT: VTT_DDR_PL VTTREF: VREFA_DDR_PL
EN_2V5_PL_DDR	out	J1	2	--	3.3V LVTTL	8mA (default)	Enable signal for TPS82130 (U22) EN: EN_+2.5V_PL_DR VOUT: +2.5V_PL_DDR PG: PG_+2.5V_PL_DR
EN_1V2_PL_DDR	out	H4	2	--	3.3V LVTTL	8mA (default)	Enable signal for TPS82130 (U24) EN: EN_+1.2V_PL_DR VOUT: +1.2V_PL_DDR PG: PG_+1.2V_PL_DR
EN_1V8_PS_AUX	out	M2	2	--	3.3V LVTTL	8mA (default)	Enable signal for TPS72018 (U43) EN: EN_+1.8V_AUX_PS VOUT: +1.8V_AUX_PS
PG_SOM	out	M1	2	--	3.3V LVTTL	8mA (default)	PG_SOM output signal connected to J2B (D51) in TEBT0865: enable signal for TPS82130 (U2) → Carrier_+1.8V enable signal for TPS54240 (U14) → Carrier_+1.8V
SC_EXT_2	out	L3	2	--	3.3V LVCMOS	2mA (default)	SC_EXT2 output signal connected to J2B (D52) in TEBT0865: enable signal for USB TPS82130 (U12) Deactivated on delivery Can be activated via I2C (see reference design)
MR	inout	K2	2	weak pull-up	3.3V LVCMOS	2mA (default)	Manual Reset will be released after power group 6 is enabled

SMB_ALERTn	in	L4	3	--	3.3V LVCMOS	2mA (default)	nAlert signal from LTM4700 (U20) not used in CPLD
PG_2V5_PL_DDR	in	L5	3	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from TPS82130 (U22) open drain output, pull-up resistor needed PG: PG_+2.5V_PL_DR EN: EN_+2.5V_PL_DDR VOUT: +2.5V_PL_DDR
M_SCL	inout	M4	3	--	3.3V LVCMOS	2mA (default)	connected to level shifter TXS0102 (U12) connected to EEPROM 24AA025 (U14) connected to SLS32AIA (U16) connected to ATECC608B-MAH (U19) connected to LTM4700 (U20)
nRST_SYS	out	K5	3		3.3V LVCMOS	2mA (default)	RST_SYSn System reset output signal, resets eMMC, ETH-Phy and USB-Phy will be released after power group 6 is enabled
PG_1V2_PS_DDR	in	M7	3	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from TPS82130 (U25) open drain output, pull-up resistor needed PG: PG_+1.2V_PS_DDR EN: EN_+1.2V_PS_DDR VOUT: +1.2V_PS_DDR
PG_0V9_GTH_AVCC	in	N6	3	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from LT8642 (U35) PG: PG_+0.9V_GTH_AVCC EN/UV: EN_+0.9V_GTH_AVCC SW: +0.9V_GTH_AVCC open drain output
PG_0V9_GTY_AVCC	in	N8	3	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from LT8642 (U38) PG: PG_+0.9V_GTY_AVCC EN/UV: EN_+0.9V_GTY_AVCC SW: +0.9V_GTY_AVCC open drain output
PG_1V8_PS_GTR_AVTT	in	M9	3	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from TPS82130 (U47) open drain output, pull-up resistor needed PG: PG_+1.8V_GTR_AVTT_PS EN: EN_+1.8V_GTR_AVTT_PS VOUT: +1.8V_GTR_AVTT_PS
PG_1V8	in	M8	3	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from TPS82130 (U41) open drain output, pull-up resistor needed PG: PG_+1.8V EN: EN_+1.8V VOUT: +1.8V
PG_1V2_GTY_AVTT	in	N9	3	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from LT8642 (U39) PG: PG_+1.2V_GTY_AVTT EN/UV: EN_+1.2V_GTY_AVTT SW: +1.2V_GTY_AVTT open drain output
M_INT	in	L11	3	--	3.3V LVCMOS	2mA (default)	not used in CPLD
PG_0V85_PS_GTR_AVCC	in	K8	3	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from TPS74801 (U48) open drain output, pull-up resistor needed PG: PG_+0.85V_PS_GTR_AVCC EN: EN_+0.85V_PS_GTR_AVCC OUT: +0.85V_PS_GTR_AVCC
PG_2V3	in	N12	3	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from TPS82130 (U45) open drain output, pull-up resistor needed PG: PG_+2.3V EN: EN_+2.3V VOUT: +2.3V
EN_LTM_RUNP	out	M5	3	--	3.3V LVTTL	8mA (default)	RUNP signal from LTM4700 (U20) enables board bias circuit to supply IC and to drive the MOSFET when the SVin is higher than 7V. Needs to be '1' ; Tie to ground to disable the bias circuit when Vin is less than 5,75V
EN_0V9_GTH_AVCC	out	N5	3	--	3.3V LVTTL	8mA (default)	Enable signal for LT8642 (U35) EN/UV: EN_+0.9V_GTH_AVCC PG: PG_+0.9V_GTH_AVCC SW: +0.9V_GTH_AVCC
EN_0V9_GTY_AVCC	out	N4	3	--	3.3V LVTTL	8mA (default)	Enable signal for LT8642 (U38) EN/UV: EN_+0.9V_GTY_AVCC PG: PG_+0.9V_GTY_AVCC SW: +0.9V_GTY_AVCC
EN_3V3_SW	out	N7	3	--	3.3V LVTTL	8mA (default)	enable signal for SIP32408 (U52) EN: EN_+3.3V_SW
EN_1V2_PS_PLL	out	J6	3	--	3.3V LVTTL	8mA (default)	Enable signal for TPS72012 (U42) EN: EN_+1.2V_PLL_PS OUT: +1.2V_PLL_PS
EN_2V5_PS_DDR	out	M13	3	--	3.3V LVTTL	8mA (default)	Enable signal for TPS82130 (U23) EN: EN_+2.5V_PS_DDR PG: PG_+2.5V_PS_DDR VOUT: +2.5V_PS_DDR
EN_1V2_GTY_AVTT	out	N10	3	--	3.3V LVTTL	8mA (default)	Enable signal for LT8642 (U39) EN/UV: EN_+1.2V_GTY_AVTT PG: PG_+1.2V_GTY_AVTT SW: +1.2V_GTY_AVTT
EN_1V8_VCC_ADC	out	M11	3	--	3.3V LVTTL	8mA (default)	Enable signal for TPS72018 (U49) EN: EN_+1.8V_VCCADC VOUT: +1.8V_VCCADC
EN_VTT_PS_DDR	out	J8	3	--	3.3V LVTTL	8mA (default)	Enable signal for TPS51206 (U27) S3/S5: EN_VTT_DDR_PS VTT: VTT_DDR_PS VTTREF: VREFA_DDR_PS
EN_1V8	out	L10	3	--	3.3V LVTTL	8mA (default)	Enable signal for TPS82130 (U41) EN: EN_+1.8V PG: PG_+1.8V VOUT: +1.8V
EN_1V8_GTY_AUX	out	M10	3	--	3.3V LVTTL	8mA (default)	Enable signal for TPS72018 (U40) EN: EN_+1.8V_GTY_AUX OUT: +1.8V_GTY_AUX

PG_3V3_SW	in	J9	5	--	3.3V LVCMOS	2mA (default)	output voltage from secondary power SIP32408 (U52) OUT: +3.3V_SW EN: EN_+3.3V_SW
PG_1V2_GTH_AVTT	in	H9	5	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from LT8642 (U36) PG: PG_+1.2V_GTH_AVTT EN/UV: EN_+1.2V_GTH_AVTT SW: +1.2V_GTH_AVTT open drain output
PG_1V8_AUX	in	G12	5	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from TPS82130 (U50) open drain output PG: PG_+1.8V_AUX EN: EN_+1.8V_AUX VOUT: +1.8V_AUX
PG_2V5_PS_DDR	in	L13	5	weak pull-up	3.3V LVCMOS	2mA (default)	PowerGood output signal from TPS82130 (U23) open drain output PG: PG_+2.5V_PS_DDR EN: EN_+2.5V_PS_DDR VOUT: +2.5V_PS_DDR
EN_1V8_PS_GTR_AVTT	out	K10	5	--	3.3V LVTTL	8mA (default)	enable signal for TPS82130 (U47) EN: EN_+1.8V_GTR_AVTT_PS PG: PG_+1.8V_GTR_AVTT_PS VOUT: +1.8V_GTR_AVTT_PS
EN_1V8_GTH_AUX	out	K11	5	--	3.3V LVTTL	8mA (default)	enable signal for TPS72018 (U37) EN: EN_+1.8V_GTH_AUX OUT: +1.8V_GTH_AUX
EN_1V8_AUX	out	K12	5	--	3.3V LVTTL	8mA (default)	enable signal for TPS82130 (U50) EN: EN_+1.8V_AUX PG: PG_+1.8V_AUX VOUT: +1.8V_AUX
EN_1V2_GTH_AVTT	out	J12	5	--	3.3V LVTTL	8mA (default)	enable signal for LT8642 (U36) EN/UV: EN_+1.2V_GTH_AVTT PG: PG_+1.2V_GTH_AVTT SW: +1.2V_GTH_AVTT
EN_1V2_PS_DDR	out	J13	5	--	3.3V LVTTL	8mA (default)	enable signal for TPS82130 (U25) EN: EN_+1.2V_PS_DDR PG: PG_+1.2V_PS_DDR VOUT: +1.2V_PS_DDR
EN_0V85_PS_GTR_AVCC	out	H13	5	--	3.3V LVTTL	8mA (default)	enable signal for TPS74801 (U48) EN: EN_+0.85V_PS_GTR_AVCC PG: PG_+0.85V_PS_GTR_AVCC OUT: +0.85V_PS_GTR_AVCC
EN_VCCINT	inout	H8	5	weak pull-up	3.3V LVCMOS	2mA (default)	enable signal for LTM4700 (U20) RUN0/1: EN_VCCINT PGOOD0/1: PG_VCCINT
EN_2V3	out	G13	5	--	3.3V LVTTL	8mA (default)	enable signal for TPS82130 (U45) EN: EN_+2.3V PG: PG_+2.3V VOUT: +2.3V

Functional Description

JTAG

JTAG access to Intel MAX 10 is available through B2B connector J2.

JTAG Signal	B2B Connector
JTAGEN	Pulled Up
TCK_MAX10	J2B- D56
TDI_MAX10	J2B- D59
TDO_MAX10	J2B- D58
TMS_MAX10	J2B- D57

Power

All power regulators are controlled by the power sequencer core from Intel. It enables and discharges the power regulators and monitors the power good signals. As the power good inputs of the power sequencer are very sensitive, all power good inputs were debounced. https://github.com/intel/multi_power_sequencer

The power-up sequence corresponds to AMD's recommendations and is shown in the table below:

Power Group	Power enable signal (CPLD output signal)	Power good signal (CPLD input signal)	Sequencer Delay¹ (PG to next OE)	Qualification Window² (OE to PG)	Notes
0	--	EN_SOM	10µs	200ms
1	EN_VCCINT	PG_VCCINT	10µs	200ms	--
	EN_2V3	PG_2V3			--
	EN_3V3_SW	PG_3V3_SW			+3.3V_SW output signal from U52
2	EN_1V8	PG_1V8	10µs	200ms	--
	EN_1V8_AUX	PG_1V8_AUX			--
	EN_1V8_PS_AUX	--			--
	EN_1V2_PS_PLL	--			--
	EN_0V9_GTH_AVCC	PG_0V9_GTH_AVCC			--
	EN_0V9_GTY_AVCC	PG_0V9_GTY_AVCC			--
	EN_1V8_VCC_ADC	--			--
3	EN_1V2_PS_DDR	PG_1V2_PS_DDR	10µs	200ms	--
	EN_1V2_PL_DDR	PG_1V2_PL_DDR			--
	EN_2V5_PL_DDR	PG_2V5_PL_DDR			--
	EN_2V5_PS_DDR	PG_2V5_PS_DDR			--
	EN_1V2_GTH_AVTT	PG_1V2_GTH_AVTT			--
	EN_1V2_GTY_AVTT	PG_1V2_GTY_AVTT			--
4	EN_VTT_PS_DDR	--	10µs	200ms	--
	EN_0V85_PS_GTR_AVCC	PG_0V85_PS_GTR_AVCC			--
	EN_VTT_PL_DDR	--			--
	EN_1V8_GTH_AUX	--			--
	EN_1V8_GTY_AUX	--			--
5	EN_1V8_PS_GTR_AVTT	PG_1V8_PS_GTR_AVTT	10µs	200ms	--
6	PG_SOM	--	0µs	200ms	--

1. Defines the delay from when the master enable is asserted before output enable is asserted, or from when Power Good is asserted until the next rail or group's output enable is asserted.
2. Defines the qualification window for which Power Good must be asserted, after output enable is asserted.

JTAG UART

As the power sequencer monitors all voltages and there is no visual feedback in the event of an error, the JTAG UART was implemented.

The command "nios2-terminal.exe" in the NIOS II command shell is used to output the CPLD Firmware and PCB revision. In case of power problems the power enable and power good signals will be displayed additionally.

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title	example normal operation

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title	example power enable and power good signals

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I2C interface

The CPLD firmware consists of an I2C slave to Avalon MM master bridge Intel FPGA IP, allowing the CPLD registers to be accessed. The device address in the firmware is 0x55, CPLD registers can be accessed via the i2c interface, e.g. in the Linux console with

i2cget -y 1 0x55 <Index> (for reading) or
i2cset -y 1 0x55 <Index> <Value> (for writing)

The following table shows the register map for the CPLD interface :

Index	Byte	Register Name	Read/Write	Description	Default
0x0	[7:0]	SC_REVISION	R	CPLD Firmware Revision	0x3
0x1	[7:0]	PCB_REVISION	R	PCB Revision	0x2
0x6	[7:0]	pwr_en	R	Status of Power Groups Bit 0: Power Group 0 Enable Power Sequencer Bit 1: Power Group 1 EN_VCCINT EN_2V3 EN_3V3_SW Bit 2: Power Group 2 EN_1V8 EN_1V8_AUX EN_1V8_PS_AUX EN_1V2_PS_PLL EN_0V9_GTH_AVCC EN_0V9_GTY_AVCC EN_1V8_VCC_ADC Bit 3: Power Group 3 EN_1V2_PS_DDR EN_1V2_PL_DDR EN_2V5_PL_DDR EN_2V5_PS_DDR EN_1V2_GTH_AVTT EN_1V2_GTY_AVTT Bit 4: Power Group 4 EN_VTT_PS_DDR EN_0V85_PS_GTR_AVCC EN_VTT_PL_DDR EN_1V8_GTH_AUX EN_1V8_GTY_AUX Bit 5: Power Group 5 EN_1V8_PS_GTR_AVTT Bit 6: Power Group 6 PG_SOM Bit 7: not used	0x7F
0x8	[7:0]	power_good_in[7:0]	R	Status of Power Good Signals Bit 0: EN_SOM Bit 1: PG_VCCINT Bit 2: PG_2V3 Bit 3: PG_3V3_SW Bit 4: PG_1V8 Bit 5: PG_1V8_AUX Bit 6: PG_0V9_GTH_AVCC Bit 7: PG_0V9_GTY_AVCC	0xFF
0x9	[7:0]	power_good_in[15:8]	R	Status of Power Good Signals Bit 0: PG_1V2_PS_DDR Bit 1: PG_1V2_PL_DDR Bit 2: PG_2V5_PL_DDR Bit 3: PG_2V5_PS_DDR Bit 4: PG_1V2_GTH_AVTT Bit 5: PG_1V2_GTY_AVTT Bit 6: PG_0V85_PS_GTR_AVCC Bit 7: PG_1V8_PS_GTR_AVTT	0xFF
0xA	[7:0]	seq_nfault	R	Status of Power Sequencer (Active Low)	0x1
0xE	[7:0]	pwr_usb_ena	R/W	Enables/Disables output signal 'SC_EXT_2' Is used for USB enable voltage in TEBT0865	0x0 (0x1 in Reference Design)

Reference Design

In the reference design, the I2C interface in u-boot is used to read out the CPLD and PCB revision as well as to switch on the output signal 'SC_EXT_2' for the USB voltage on the carrier board TEBT0865. These information will be displayed while booting the reference design as shown:

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title	U-boot snippet reference design

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Reset

The reset signals ‘MR’ and ‘nRST_SYS’ will be released after power group 6 has been activated.

Appx. A: Change History

Revision Changes

REV02 to REV03
- changed top design from block design to text design
- added power sequencer
- added debouncing for power good signals
- added jtag_uart
- added i2c interface
- added release for reset (MR and nRST_SYS)
- added logic for SC_EXT_2
  - enable/disable USB power for TEBT0865 via I2C
  - default: disabled
- update constraining design
REV01 to REV02
- added Pin L3 SC_EXT_2 as output and set to VCC to enable USB

Document Change History

To get content of older revision got to "Change History" of this page and select older document revision number.

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Date

Document Revision

CPLD Firmware Revision

Supported PCB Revision

Authors

Description

Firmware Release

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dateFormat	yyyy-MM-dd
type	Flat

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	current-version
	current-version
prefix	v.

REV03

REV02

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Update Change History

SC-PGM-TE0865-02_SC0865-03_20240918.zip

2024-09-18

v.38

REV03

REV02

Manuela Strücker

Documentation initial

User_LEDout4NONE3.3VINuser defined or status, see LED description
For PCB REV04 shows the state of X1 and X0. / For PCB REV05 shows the boot mode state for selection via hardware (Dip switch in carrier board) or via software (related command in linux console or FSBL code)1.8V input ERR_OUT(PS_ERROR_OUT)PG_ALLin5NONE3.3VINThis pin is used as power good (input)Unused in CPLD firmware for PCB REV04( In hardware is pulled up) / Used in PCB REV05 as power good input pin1.8V input ERR_STATUS as inputJTAGEN in26---3.3VINEnable JTAG access to CPLD for Firmware update (zero: JTAG routed to module, one: CPLD access)MODE in25UP3.3VINBoot Mode for Zynq/ZynqMP Devices (Flash or SD)MODE0 out12DOWN1.8VZynqMP Boot Mode Pin 0MODE1 out13DOWN1.8VZynqMP Boot Mode Pin 1MODE2 out14DOWN1.8VZynqMP Boot Mode Pin 2MODE3 out16DOWN1.8VZynqMP Boot Mode Pin 3NOSEQ inout23UP3.3VINUsage CPLD Variant dependsUsed as GPIO pin by user. This pin can be written or read via i2cset command in linux console or FSBl code functions.Used as boot mode selection pin, if CPLD is programmed using SC0820_qspi_sd_jtag.jed jed-file.PGOOD inout28UP3.3VINModule Power Good (only Feedback from EN1 for PCB revision 4 or older). / For PCB revision 5 is used as boot mode selection pin or power good pin (feedback from PG_ALL pin)Module Power Good (only Feedback from EN1 for PCB revision 4 or older). / Boot mode selection pin for PCB REV05PHY_LED1 in17---1.8VETH PHY LED1 / currently_not_usedTCK out9DOWN1.8VJTAG ZynqMPTDI out8DOWN1.8VJTAG ZynqMPTDO in10DOWN1.8VJTAG ZynqMPTMS out11DOWN1.8VJTAG ZynqMPX0 in20UPVCCO_65I2C SCL pinUsed as tri-state enable-input for User_LED pin for PCB REV04 / Used as i2c SCL pin for PCB REV05 X1 inout21UPVCCO_65I2C SDA pinUsed as tri-state input for User_LED pin for PCB REV04 / Used as i2c SDA pin for PCB REV05

Functional Description

JTAG

JTAG signals routed directly through the CPLD to FPGA. Access between CPLD and FPGA can be multiplexed via JTAGEN (logical one for CPLD, logical zero for FPGA) on JM1-89.

Boot Mode

Boot mode can be set either by hardware (dip-switch) on the carrier board or by firmware in linux console or FSBL code. Even after booting boot mode can be changed . After changing the boot mode FPGA is restarted automatically by CPLD, if PCB revision is REV05, otherwise for PCB revision 4 user must reset manually to execute boot mode changing correctly.To change boot mode a state machine continuously monitors the corresponding register that can be change via I2C interface between CPLD and FPGA.

Change methodBoot ModeCPLD PGOOD Pin (B2B Pin JM1-30)CPLD MODE Pin (B2B Pin JM1-32)DescriptionHardwareJTAG00HardwareeMMC01HardwareSD Card10HardwareQSPI11Change methodBoot ModeCommand in linux consoleCommand in FSBLDescriptionSoftwareJTAG

i2cset -y 1 0x20 0x01 0x91

iic_write8(0x20,0x01,0x91)

0x20 is device address. 0x01 is register address.SoftwareSD Card

i2cset -y 1 0x20 0x01 0x93

iic_write8(0x20,0x01,0x93)

0x20 is device address. 0x01 is register address.SoftwareQSPI

i2cset -y 1 0x20 0x01 0x92

iic_write8(0x20,0x01,0x92)

0x20 is device address. 0x01 is register address.SoftwareeMMC

i2cset -y 1 0x20 0x01 0x90

iic_write8(0x20,0x01,0x90)

0x20 is device address. 0x01 is register address.

If PCB revision is REV04, then user must reset manually the carrier board after changing the boot mode using i2cset command in linux console. If PCB revision is REV05, it is not necessary to reset the FPGA by user, because FPGA will be reset automatically via CPLD after changing the boot mode via i2cset command in linux console.

For other UltraScale+ Boot Modes options custom firmware is needed, see also Table 11.1 Boot Modes from Xilinx UG1085.

Power

For PCB revision 4 or older PGOOD depends on EN1. There is no additional power management controlled by CPLD. For PCB revision 5 PGOOD depends on PG_ALL signal.

LED

Green LED D2 glows depending on boot mode and whether boot mode is selected by hardware or firmware.

LED stateConditionRelated commandDescriptionOFFJTAG boot mode and software boot mode selection not activeBoot mode is adjusted by dip switch on the carrier board. CPLD_BM = '0'Blink sequence *oooooooQSPI boot mode and software boot mode selection not activeBoot mode is adjusted by dip switch on the carrier board. CPLD_BM = '0'Blink sequence **ooooooeMMC boot mode and software boot mode selection not activeBoot mode is adjusted by dip switch on the carrier board. CPLD_BM = '0'Blink sequence ***oooooSD card boot mode and software boot mode selection not activeBoot mode is adjusted by dip switch on the carrier board. CPLD_BM = '0'Blink sequence ****ooooJTAG boot mode and software boot mode selection active

i2cset -y 1 0x20 0x01 0x91   in linux console

CPLD_BM = '1'Blink sequence *****oooQSPI boot mode and software boot mode selection active

i2cset -y 1 0x20 0x01 0x92   in linux console

CPLD_BM = '1'Blink sequence ********eMMC boot mode and software boot mode selection active

i2cset -y 1 0x20 0x01 0x93   in linux console

CPLD_BM = '1'ONSD card boot mode and software boot mode selection active

i2cset -y 1 0x20 0x01 0x90   in linux console

CPLD_BM = '1'

Note: asterisk mean one blink. So for example **oooooo mean 2 time blink with a longer break(with the time of 6 blinks)

I2C interface

CPLD firmware consists of a i2c t GPIO block. This subsystem provides i2c protocol interface to 32-bit (4 x 8-bit) (GPIO_input[31:0]) registers for reading from CPLD and (4 x 8-bit) (GPIO_output[31:0]) registers for writing in CPLD as general purpose parallel input and output (I/Os). The written and read data is communicated from/to FPGA via i2c bus interface protocol. The address of this block in the firmware is 0x20.In this case related i2c bus is bus 1.

draw.io DiagrambordertruediagramNameTE0820_CPLD_I2C_to_GPIO_Block_DiagrammsimpleViewerfalsewidthlinksautotbstyletoplboxtruediagramWidth731revision1RegisterDirection in CPLDAddressGPIO_input[7:0]Output (reading from CPLD)0x00GPIO_input[15:8]Output (reading from CPLD)0x01GPIO_input[23:16]Output (reading from CPLD)0x02GPIO_input[31:24]Output (reading from CPLD)0x03GPIO_output[7:0]Input (writing to CPLD)0x00GPIO_output[15:8]Input (writing to CPLD)0x01GPIO_output[23:16]Input (writing to CPLD)0x02GPIO_output[31:24]Input (writing to CPLD)0x03

NOSEQ pin

This pin in PCB REV04 with old CPLD firmware version (REV04) is used as boot mode pin select. If CPLD is programmed with SC0820_qspi_sd_jtag.jed as jed file and NOSEQ is high, JTAG boot mode will be selected. For PCB REV05 or PCB REV04 with new CPLD firmware (CPLD firmware REV05) NOSEQ pin can be used by user as GPIO pin and accessed via i2c interface. In this case the following table can be used:

NOSEQ pin as outputConditionCommand in linux console'1'GPIO_output(16) = '1'

i2cset -y 1 0x20 0x02 0x01

'0'GPIO_output(16) = '0'

i2cset -y 1 0x20 0x02 0x00

NOSEQ pin as inputDescriptionCommand in linux consoleReading state of NOSEQ pinGPIO_input(16) = NOSEQ

i2cget -y 1 0x20 0x02

Access to CPLD Registers

CPLD registers can be accessed via i2c interface. In the following table is shown how these registers can be read or written:

RegisterDirection in CPLDAddressRelated instruction in linux console to access the registerGPIO_input[7:0]Output (reading from CPLD)0x00i2cget -y 1 0x20 0x00GPIO_input[15:8]Output (reading from CPLD)0x01i2cget -y 1 0x20 0x01GPIO_input[23:16]Output (reading from CPLD)0x02i2cget -y 1 0x20 0x02GPIO_input[31:24]Output (reading from CPLD)0x03i2cget -y 1 0x20 0x03GPIO_output[7:0]Input (writing to CPLD)0x00i2cset -y 1 0x20 0x00 <data>GPIO_output[15:8]Input (writing to CPLD)0x01i2cset -y 1 0x20 0x01 <data>GPIO_output[23:16]Input (writing to CPLD)0x02i2cset -y 1 0x20 0x02 <data>GPIO_output[31:24]Input (writing to CPLD)0x03

i2cset -y 1 0x20 0x03 <data>

Some of these registers are using to show some information same as CPLD revision and boot mode while booting.

RegisterAddressrelated dataRead/write by userDescriptionGPIO_input[7:0]0x00CPLD REVISION (8 bits)NoGPIO_input[15:8]0x01"00" & BOOTMODE_GEN (2 bits) & PUDC (1 bit) & CPLD_BM (1 bit) & BOOT_MODE (2 bits)No

BOOTMODE_GEN is a generic parameter in firmware code to select type of jed-file. For example if this parameter is 3 , then by programming the related jed-file the user can have all boot mode options. (QSPI/JTAG/SD Card/eMMC).

PUDC is the state of PUDC pin of FPGA.

CPLD_BM is a parameter to show if boot mode selection is executed via hardware ( if low) or software (if high)

BOOT_MODE shows selected boot mode.

GPIO_input8[16]0x02NOSEQ pinYesRegisterAddressrelated dataDescriptionGPIO_output[16]0x02NOSEQ pinYes

If CPLD firmware version is REV05, then boot mode, CPLD revision and some features of the board will be displayed in the linux console via FSBL code while booting. The format of these informations are shown in the following:

InformationDisplayed in Linux consoleDescriptionCPLD RevisionCPLD_REV = <cpld revision>Boot mode selection procedureCPLD_BM = < bm selection procedure>

If boot mode via hardware is selected → Deactive(0)
If boot mode via software (in linux console or via FSBL code) is selected → Active(1)

Jed file that on CPLD is programmedBOOTMODE_GEN = < jed file type>

Jed file type can be one of the following types :
- (0) QSPI/SD
- (1) QSPI/JTAG
- (2) JTAG/SD
- (3) default QSPI/JTAG/SD/eMMC

PUDC pin statePUDC_MODE = <pudc state>

PUDC can have one of the following state:
- Pull-up activated (0)
- Pull-up deactivated (1)

Boot modeBOOT_MODE = <boot mode>

The following boot modes can displayed:
- eMMC (0)
- JTAG (1)
- QSPI (2)
- SD Card (3)

The CPLD revision, boot mode and other informations will be displayed while booting as shown:

Scroll Title

title-alignment	center
title	All information while booting

Image Removed

If PCB revision is REV04 and CPLD firmware version is older than REV05 (for example REV04) , then it will not be displayed these informations same as boot mode while booting and the following message will be displayed:

Scroll Title

title-alignment	center
title	Message while booting if CPLD firmware version is old for PCB REV04

Image Removed

Appx. A: Change History

For PCB REV01 and REV02 Documentation available on: TE0820-REV01_REV02 CPLD

Revision Changes

REV04 to REV05
- Adding configuration of boot mode in linux console and via generic parameters
- PGOOD pin used as boot mode selector pin.
- Adding boot mode configuration via hardware
- JTAG time constraint correction
- Adding i2c to gpio ip (i2c_slave.vhd)
- LED function is changed.
- New generic parameter defined : PCB_REV
- EN1 pin
  - is renamed to RST_EN.
  - pin is input for PCB_REV=4 and it is enable pin same as before.
  - is reset output for PCB_REV=5 or newer.
REV03 to REV04
- PCB REV03 support only
- X1 is input for USER LED
- X0 select X0 or Firmware Blink status to User LE
- blink modes for QSPI/SD firmware
REV02 to REV03
- new Boot Mode variants
- new X0 status blink sequencing
REV01 to REV02
- Boot Mode variants
- X1
- Remove ERR_STATUS

Document Change History

To get content of older revision got to "Change History" of this page and select older document revision number.

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Initial release

Date

Document Revision

CPLD Firmware Revision

Supported PCB Revision

Authors

Description

Page info

infoType	Modified date
dateFormat	yyyy-MM-dd
type	Flat

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current-version

prefix

v.

REV05

REV04,REV05

Page info

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add LED Designator Note

2022-10-05

v.3

REV05

REV04,REV05

Mohsen Chamanbaz

REV05 release
Firmware release for PCB REV04 (SC-PGM-TE0820-04_SC820-05_20221005.zip)
Firmware release for PCB REV05 (SC-PGM-TE0820-05_SC820-05_20221005.zip)
Firmware release ()
Access to boot mode in linux console or FSBl code
Indicating CPLD revision , boot mode and PUDC state while booting

2018-08-29

v.2

REV04

REV03

John Hartfiel

typo correction

06 Jul 2018

v.1

REV04

REV03

John Hartfiel

Revision 04 finished
separate page for PCB REV01 and REV02

06 Jul 2018

v.1

REV04

REV03

Page info

created-user

All

Page info

	modified-users
	modified-users

Appx. B: Legal Notices

Include Page

	IN:Legal Notices
	IN:Legal Notices

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Trenz Electronic Documentation

Versions Compared

Old Version 1

New Version Current

Key

Overview

Feature Summary

Firmware Revision and supported PCB Revision

Product Specification

Port Description

Feature Summary

Firmware Revision and supported PCB Revision

Product Specification

Port Description

Functional Description

JTAG

Power

JTAG UART

I2C interface

Reference Design

Reset

Appx. A: Change History

Revision Changes

Document Change History

Functional Description

JTAG

Boot Mode

Power

LED

I2C interface

NOSEQ pin

Access to CPLD Registers

Revision Changes

Document Change History

Appx. B: Legal Notices

Table of contents