EZ-USB Datasheet, PDF (203/334 Pages) Cypress Semiconductor – The EZ-USB USB Integrated Circuit

Table 12-4. IO Pin Alternate Functions
I/O
Name
Alternate Functions
PA0
T0OUT
Timer 0 Output
PA1
T1OUT
Timer 1 Output
PA2
OE#
External Memory Output Enable
PA3
CS#
External Memory Chip Select
PA4
FWR#
Fast Access Write Strobe
PA5
FRD#
Fast Access Read Strobe
PA6
RXD0OUT
Mode 0: UART0 Synchronous Data Output
PA7
RXD1OUT
Mode 0: UART1 Synchronous Data Output
PB0
T2
Timer/Counter 2 Clock Input
PB1
T2EX
Timer/Counter 2 Capture/Reload Input
PB2
RxD1
Serial Port 1 Input
PB3
TxD1
Mode 0: Clock Output
Modes 1-3: Serial Port 1 Data Output
PB4
INT4
INT4 Interrupt Request
PB5
INT5#
INT5 Interrupt Request
PB6
INT6
INT6 Interrupt Request
PB7
T2OUT
Timer/Counter 2 Overflow Indication
PC0
RxD0
Serial Port 0 Input
PC1
TxD0
Mode 0: Clock Output
Modes 1-3: Serial Port 0 Data Output
PC2
INT0#
INT0 Interrupt Request
PC3
INT1#
INT1 Interrupt Request
PC4
T0
Timer/Counter 0 External Input
PC5
T1
Timer/Counter 1 External Input
PC6
WR#
External Memory Write Strobe
PC7
RD#
External Memory Read Strobe
Page 12-10
Chapter 12. EZ-USB Registers
EZ-USB TRM v1.9