Rainbow Electronics AT75C220 - Manual (Page 5)

AT75C220
5
MAC B Interface MB_COL MAC B Collision Detect Input
MB_CRS MAC B Carrier Sense Input
MB_TXER MAC B Transmit Error Output
MB_TXD[3:0] MAC B Transmit Data Bus Output
MB_TXEN MAC B Transmit Enable Output
MB_TXCLK MAC B Transmit Clock Input
MB_RXD[3:0] MAC B Receive Data Bus Input
MB_RXER MAC B Receive Error Input
MB_RXCLK MAC B Receive Clock Input
MB_RXDV MAC B Receive Data Valid Output
MB_MDC MAC B Management Data Clock Output
MB_MDIO MAC B Management Data Bus Input/Output
MB_LINK MAC B Link Interrupt Input
Miscellaneous RESET Power on Reset Input
FIQ/LOWP Fast Interrupt/Low Power Input
IRQ0 External Interrupt Requests Input
XREF240 External 240 MHz PLL Reference Input
XTALIN External Crystal Input Input
XTALOUT External Crystal Ouptut Output
TST Test Mode Input
B0256 Package Size Option (1 = 256 pins) Input
DBW32 External Data Bus Width for CS0 (1 = 32 bits) Input
Table 1. AT75C220 Pin Description List (Continued)
Block Pin Name Function Type