User Manual

AT75C220

Serial Peripheral Interface MISO Master In/Slave Out Input/Output

MOSI Master Out/Slave In Input/Output

SPCK Serial Clock Input/Output

NPCSS Chip Select/Slave Select Input/Output

NPCS1 Optional SPI Chip Select 1 Output

USART A RXDA Receive Data Input

TXDA Transmit Data Output

NRTSA Ready to Send Output

NCTSA Clear to Send Input

NDTRA Data Terminal Ready Output

NDSRA/BOOTN Data Set Ready Input

NDCDA Data Carrier Detect Input

USART B RXDB Receive Data Input

TXDB Transmit Data Output

JTAG Interface NTRST Test Reset Input

TCK Test Clock Input

TMS Test Mode Select Input

TDI Test Data Input Input

TDO Test Data Output Output

Codec Interface SCLKA Serial Clock Input/Output

FSA Frame Pulse Input/Output

STXA Transmit Data to Codec Input

SRXA Receive Data to Codec Output

MAC A Interface MA_COL MAC A Collision Detect Input

MA_CRS MAC A Carrier Sense Input

MA_TXER MAC A Transmit Error Output

MA_TXD[3:0] MAC A Transmit Data Bus Output

MA_TXEN MAC A Transmit Enable Output

MA_TXCLK MAC A Transmit Clock Input

MA_RXD[3:0] MAC A Receive Data Bus Input

MA_RXER MAC A Receive Error Input

MA_RXCLK MAC A Receive Clock Input

MA_RXDV MAC A Receive Data Valid Output

MA_MDC MAC A Management Data Clock Output

MA_MDIO MAC A Management Data Bus Input/Output

MA_LINK MAC A Link Interrupt Input

Table 1. AT75C220 Pin Description List (Continued)

Block Pin Name Function Type