Page History
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| Company | Trenz Electronic GmbH |
|---|---|
| PCN Number | PCN-2020061620200827 |
| Title | TE0820TE0727-03 01 to TE0820TE0727-04 02 Hardware Revision Change |
| Subject | Hardware Revision Change |
| Issue Date | 2020-08-1327 |
Products Affected
This change affects all Trenz Electronic TE0820 Electronic TE0727 SoMs of revision 0301: TE0820-0301-*.
Affected Product | Replacement |
|---|---|
| TE0820TE0727-0301-* | TE0820TE0727-0402-* |
Changes
#1
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fixed I2C connection, added I2C MUX (U16; PCA9540BGD,125)
Type: Schematic change
Reason: Support different DDR4 chips.
Impact: Support of B-die DDR4 Industrial grade chips
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Both I2C was connected to I2C1 on MIO
Impact: Now supported both I2C: CSI & ID(on PiHAT connector)
#2 Added optional pin-header connector for select JTAG boot mode
Type: Schematic change
Reason: Former chip not recommended for new designs.
Impact: None. With R93 and changed value of C62 the circuit behaves as before.
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Requres special workaround to write Flash in non JTAG mode (7Series Zynq)
Impact: Sometimes not loaded
#3 Added 2x user LEDs
Type: Schematic change
Reason: Datasheet recommendation. Expansion of functionality
Impact: None.
#4
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Changed obsolete DDR3 chip
Type: Schematic BOM change
Reason: Recommended by Xilinx UG583 IS43TR16256AL-125KBLI became obsolete.
Impact: None.
#5
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Fixed wrong conection for CSI-2
Type: BOM Schematic change
Reason: Recommended by Xilinx DS925 v1.17
Impact: None.
#6 Fixed DDR4 connection (Alert)
Type: Schematic change
Reason: Alert signal was connected to VTT.
Impact: None. Alert signal connected to DDR_1V2.
#7 Added 3.3V signal to CPLD pin 5
Type: Schematic change
Reason: Request for power good signal at CPLD.
Impact: State of 3.3V rail can be evaluatet in CPLD Firmware.
#8 Added testpoints
Type: Schematic change
Reason: Testpoints needed for improved automatic testing.
In J2 was swapped pin1 and pin22 (in schematic RaspberryPiZero was swapped pin1 and pin22)
Impact: In Rev01 was used another type connector. Now will be used at the same connector with Raspberry PiZero
#6 Changed C85/ C86 to 10uF
Type: BOM change
Reason: U13 has total capacitance limitation
Impact: Stable work of DCDC
#7 Added legal notices to Schematic
Type: Documentation change
Reason: Increase awarness of legal usage.
Impact: None.
#8 Set S/N to not fitted.
Type: BOM change
Reason: Part is end of life.
Impact: Track it pad no more Impact: More testpoints available.
#9 LIB components update
Type: Schematic change
Reason: Improve production yield.
Impact: None.
Method of Identification
The revision number is printed on the top side of the PCB.
draw.io Diagram
Production Shipment Schedule
The new revison 04 02 is available from August 2020, after old Stock is gone. If you still need revision 03 01 please contact us.
Contact Information
If you have any questions related to this PCN, please contact Trenz Electronics Technical Support at
- forum.trenz-electronic.de
- wiki.trenz-electronic.de
- support%trenz-electronic.de (subject = PCN-2020061620200827)
phone
national calls: 05741 3200-0
international calls: 0049 5741 3200-0
Disclaimer
Any projected dates in this PCN are based on the most current product information at the time this PCN is being issued, but they may change due to unforeseen circumstances. For the latest schedule and any other information, please contact your local Trenz Electronic sales office, technical support or local distributor.
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