Visible to Intel only — GUID: sfo1410069663630
Ixiasoft
Visible to Intel only — GUID: sfo1410069663630
Ixiasoft
20.4.3.4. EEPROM Read
When TMOD = 3, the transmit data is used to transmit an opcode, an address, or both to the EEPROM device. This takes three data frames (8‑bit opcode followed by 8‑bit upper address and 8‑bit lower address). During the transmission of the opcode and address, no data is captured by the receive logic (as long as the SPI master is transmitting data on its txd line, data on the rxd line is ignored). The SPI master continues to transmit data until the transmit FIFO buffer is empty. You should ONLY have enough data frames in the transmit FIFO buffer to supply the opcode and address to the EEPROM. If more data frames are in the transmit FIFO buffer than are needed, then Read data is lost.