Motorola MC68302 User Manual page 77

3-30
Table 3-5. Port A Pin Functions
PACNT Bit=1 PACNT Bit=O Input to
Pin Function Pin Function SCC2/SCC3/IDMA
RXD2 PAO GND
TXD2 PA1
-
RCLK2 PA2 GND
TCLK2 PA3 GND
CTS2 PA4 GND
RTS2 PA5
-
CD2 PA6 GND
SDS2 PA7
-
RXD3 PA8 GND
TXD3
PAS -
RCLK3 PA10
GND
TCLK3 PA11 GND
-
PA12
-
DREQ PA13 GND
DACK PA14
-
DONE PA15
VDD
Table 3-6. Port B Pin Functions
PBCNT Bit=1 PBCNT Bit=O Input to Interrupt
Pin Function Pin Function Control and Timers
IACK7
PBO
-
IACK6
PB1
-
IACK1 PB2
-
TIN1 PB3 GND
TOUT1 PB4
-
TIN2 PB5 GND
TOUT2 PB6
-
WDOG PB7
-
NOTE
After system reset, WDOG is configured as a dedicated watchdog
timer output using bit 7 of PBCNT.
MC68302 USER'S MANUAL MOTOROLA