User Manual

AT75C220

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