Specifications
Rev. 1.43
User's Guide
85
5.7. MPC-8260 I/O ports assignment
The MPC-8260 processor provides four I/O ports (A, B, C and D) which have the abilities for handling
several hardware functions like serial communication interfaces, DMA control handling and general
purpose I/Os.
MPC-8260 Peripheral function
I/O Function I/O Signal Description
SMC1
PD9
SMTXD1 O
TxD Transmit data
PD8
SMRXD1 I
RxD Receive data
SMC2
PA9
SMTXD2 O
TxD Transmit data
PA8
SMRXD2 I
RxD Receive data
SCC1
PD30
TXD1 O
TxD Transmit data
PD31
RXD1 I
RxD Receive data
PD29
RTS1 O
RTS Request to send
PC15
CTS1 I
CTS Clear to send
PA22
PA22 O
DTR Data terminal ready
PC14
CD1 I
DCD Data carrier detect
PC31
BRG1 O
TxC Transmit clock
PC29
CLK3 I
RxC Receive clock
SCC2
PB12
TXD2 O
TxD Transmit data
PB15
RXD2 I
RxD Receive data
PD26
RTS2 O
RTS Request to send
PC13
CTS2 I
CTS Clear to send
PA23
PA23 O
DTR Data terminal ready
PC12
CD2 I
DCD Data carrier detect
PD17
BRG2 O
TxC Transmit clock
PC28
CLK4 I
RxC Receive clock
SCC3
PB8
TXD3 O
TxD Transmit data
PB14
RXD3 I
RxD Receive data
PD23
RTS3 O
RTS Request to send
PC11
CTS3 I
CTS Clear to send
PA24
PA24 O
DTR Data terminal ready
PC10
CD3 I
DCD Data carrier detect
PC27
BRG3 O
TxC Transmit clock
PC25
CLK7 I
RxC Receive clock
SCC4
PD21
TXD4 O
TxD Transmit data
PD22
RXD4 I
RxD Receive data
PD20
RTS4 O
RTS Request to send
PC9
CTS4 I
CTS Clear to send
PA25
PA25 O
DTR Data terminal ready
PC8
CD4 I
DCD Data carrier detect
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