Rainbow Electronics AT75C220 - Manual (Page 4)

AT75C220
4
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