Cypress EZ-USB FX3 - Serial Peripheral Interface; SPI Block Features

EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 175
Low Performance Peripherals (LPP)
while (pageCount != 0)
{
if (isRead) /* Read */
{
/* Update the preamble information. */
preamble.length = 4;
preamble.buffer[0] = devAddr;
preamble.buffer[1] = (uint8_t )(byteAddress >> 8);
preamble.buffer[2] = (uint8_t)(byteAddress & 0xFF);
preamble.buffer[3] = (devAddr | 0x01);
preamble.ctrlMask = 0x0004;
buf_p.size = glI2cPageSize;
buf_p.count = glI2cPageSize;
status = CyU3PI2cSendCommand (&preamble, glI2cPageSize, isRead);
status = CyU3PDmaChannelSetupRecvBuffer (&glI2cRxHandle, &buf_p);
status = CyU3PDmaChannelWaitForCompletion(&glI2cRxHandle, 0x7FFF);
}
else /* Write */
{
/* Update the preamble information. */
preamble.length = 3;
preamble.buffer[0] = devAddr;
preamble.buffer[1] = (uint8_t)(byteAddress >> 8);
preamble.buffer[2] = (uint8_t)(byteAddress & 0xFF);
preamble.ctrlMask = 0x0000;
buf_p.size = glI2cPageSize;
buf_p.count = glI2cPageSize;
status = CyU3PDmaChannelSetupSendBuffer (&glI2cTxHandle, &buf_p);
status = CyU3PI2cSendCommand (&preamble, glI2cPageSize, isRead);
status = CyU3PDmaChannelWaitForCompletion(&glI2cTxHandle, 0x7FFF);
}
/* Update the parameters */
byteAddress += glI2cPageSize;
buf_p.buffer += glI2cPageSize;
pageCount --;
/* Need a delay between write operations. */
CyU3PThreadSleep (10);
}
}
8.3 Serial Peripheral Interface
8.3.1 SPI Block Features
■ Supports master mode only
■ Supports all four SPI transfer modes (programmable SPI clock polarity and phase)
■ Complies with the Motorola SPI specification in chapter 8 of the MC68HC11 reference manual
■ Supports register-based and DMA-based transfers
■ Supports programmable data unit length of 4 bit, 8 bit,16 bit, and 32 bit, MSB or LSB first