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VSBC-32 Functional Description

ID 21168, Rev. 04Page 2 - 16 © PEP Modular Computers GmbH

Table 2-5: IUC/IUC-32 Porting Information (Sheet 1 of 2)

CXC

Function

MC68302

Comp.

MC68(EN)

360

Port

Comment

See

Note

IRQ_1 A1 Yes PC0 —

IRQ_2 A2 Yes PC1 —

IRQ_3 A3 Yes PC2 —

IRQ_4 A4 Yes PC3 —

DMA_ACK C2 Yes PB5 —

DMA_REQ C3 Yes PB4 —

SER1_RCLK B1 Yes PA8 —

SER1_TCLK B2 Yes PA10 —

SER1_TXD B4 Yes PA3 —

SER1_RXD B10 Yes PA2 —

SER1_RTS B5 Yes PB13 —

SER1_DTR A13 Yes PB17 —

SER1_CTS B13 Yes PC6 —

SER1_CD B14 Yes PC7 —

SER2_RCLK C16 Yes PA13 Cannot be used if J4 is set 3

SER2_TCLK C15 Yes PA12 —

SER2_TXD C17 Yes PA5 —

SER2_RXD C18 Yes PA4 —

SER2_RTS C12 Yes PB14 —

SER2_DTR A11 Yes PB16 —

SER2_CTS C13 Yes PC8 —

SER2_CD C11 Yes PC9 —

SER3_RCLK C6 Yes PA15 Not usable if SI piggyback uses SCC4 4

SER3_TCLK C5 Yes PA14 —

SER3_TXD C8 Yes PA7 Not usable if SI piggyback uses SCC4 4

Legend:

1 Reserved Pin: On a standard VSBC-32 board, this signals is used for UART ports at BU7 and BU8.

2 Reserved Pin: On a standard VSBC-32 board, this signal is used for SPI to which the EEPROM is already con-

nected. PB0 is chip select of the EEPROM.

3 Reserved Pin: On PA13, a 24 MHz clock signal is routed via jumper J4. This signal is always needed for PEP

standard software (serial drivers).

4 Dual Functioning Pin: This signal is routed both to the mainboard’s interface for serial interface piggybacks

(ST5C) and the CXC backplane connector and can be used by either one or the other, but not both at the same

time. Due to this, a conflict exists if the SCC4 port is to be used with the SI232 piggyback and CXC boards

(such as CXM-SIO3), as both boards access this port. The SCC4 port can, therefore, not be used at the same

time by serial interface piggybacks and CXC boards.