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| Scroll pdf title |
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| title | SPI signals summary. |
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name | definition | description | SPI_Q | serial data output | This output signal is used to transfer data serially out of the device. Data is shifted out on the falling edge of SPI_/C. | SPI_D | serial data input | This input signal is used to transfer data serially into the device. It receives instructions, addresses, and the data to be programmed. Values are latched on the rising edge of SPI_/C | SPI_/C | serial clock | This input signal provides the timing of the serial interface. Instructions, addresses, or data present at SPI_D are latched on the rising edge of SPI_/C. Data on SPI_Q changes after the falling edge of SPI_/C. | SPI_/S | chip select | When this input signal is high, the device is disabled and SPI_Q is at high impedance (Z). | | | When this input signal is low, the device is enabled. | | | After power-up, a falling edge on SPI_/S is required prior to the start of any instruction to the Flash memory. |
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SPI signal pin-out of the TE0320 is summarized in the table below.
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The SPI bus can be used during configuration and operation in a plurality of ways as summarized respectively in Table A (SPI bus for configuration) and Table B (SPI bus for operation).
| Warning |
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| Any other usage of the SPI bus is neither supported nor recommended. |
SPI bus for configuration
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A plurality of usage combinations of the SPI bus during operation is made available to the user as suggested in Table B below.
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| title | Table B: SPI bus modes for operation. |
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description | usage | EZ-USB FX2LP | FPGA | B2B JM5 | serial Flash | EZ-USB â—„â-º Flash | custom | master | off
(S2 = FX2PON,
FX2_PS_EN = 0) | deselected | slave | FPGA â—„â-º Flash | custom | inactive
SPI_* = Z | master
(SPI_/S = 1) | deselected | slave | B2B JM5 â—„â-º Flash | custom | inactive
SPI_* = Z | off
(S2 = FX2PON,
FX2_PS_EN = 0) | master
(SPI_/S = 0) | slave | EZ-USB â—„â-º B2B JM5 | custom | master
SPI_/S = 1 | off
(S2 = FX2PON,
FX2_PS_EN = 0) | slave | deselected | EZ-USB â—„â-º B2B JM5 | custom | slave
SPI_/C = Z | off
(S2 = FX2PON,
FX2_PS_EN = 0) | master
(SPI_/S = 1) | deselected |
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| Warning |
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| Other combinations of master and slave units are neither supported nor recommended. |