III PERIPHERAL BLOCK: SERIAL INTERFACE

I/O Pins of Serial Interface

Table 8.1 lists the I/O pins used by the serial interface.

Table 8.1 Serial-Interface Pin Configuration

Pin name

I/O

Function

Function select bit

P00/SIN0

I/O

I/O port / Serial IF Ch.0 data input

CFP00(D0)/P0 function select register(0x402D0)

P01/SOUT0

I/O

I/O port / Serial IF Ch.0 data output

CFP01(D1)/P0 function select register(0x402D0)

P02/#SCLK0

I/O

I/O port / Serial IF Ch.0 clock input/output

CFP02(D2)/P0 function select register(0x402D0)

P03/#SRDY0

I/O

I/O port / Serial IF Ch.0 ready input/output

CFP03(D3)/P0 function select register(0x402D0)

P04/SIN1/

I/O

I/O port / Serial IF Ch.1 data input

CFP04(D4)/P0 function select register(0x402D0)

#DMAACK2

 

/ #DMAACK2 signal output

CFEX4(D4)/Port function extension register(0x402DF)

P05/SOUT1/

I/O

I/O port / Serial IF Ch.1 data output

CFP05(D5)/P0 function select register(0x402D0)

#DMAEND2

 

/ #DMAEND2 signal output

CFEX5(D5)/Port function extension register(0x402DF)

P27/TM5/SIN2

I/O

I/O port / Serial IF Ch.2 data input

CFP27(D[7:0])/Function select register(0x402D8)

 

 

 

SSIN2(D[0:1])/Function select register(0x402DB)

P26/TM4/SOUT2

I/O

I/O port / Serial IF Ch.2 data output

CFP26(D[6:0])/Function select register(0x402D8)

 

 

 

SSOUT2(D[1:1])/Function select register(0x402DB)

P25/TM3/#SCLK2

I/O

I/O port / Serial IF Ch.2 serial clock input/output

CFP25(D[5:0])/Function select register(0x402D8)

 

 

 

SSCLK2(D[2:1])/Function select register(0x402DB)

P24/TM2/#SRDI2

I/O

I/O port / Serial IF Ch.2 ready input/output

CFP24(D[4:0])/Function select register(0x402D8)

 

 

 

SSTDY2(D[3:1])/Function select register(0x402DB)

TXD

I/O

Serial IF Ch.3 data output (SOUT3)

When MSEL pin input is at Low level

RXD

I/O

Serial IF Ch.3 data input (SIN3)

When MSEL pin input is at Low level

SINx (serial-data input pin)

This pin is used to input serial data to the device, regardless of the transfer mode.

SOUTx (serial-data output pin)

This pin is used to output serial data from the device, regardless of the transfer mode.

#SCLKx (clock input/output pin) This pin is used to input or output a clock.

In the clock-synchronized slave mode, it is used as a clock input pin; in the clock-synchronized master mode,it is used as a clock output pin.

In the asynchronous mode, this pin is used as clock input when an external clock is used. This pin is not used when the internal clock is used, so it can be used as an I/O port.

#SRDYx (ready-signal input/output pin)

This pin is used to input or output the ready signal that is used in the clock-synchronized mode.

In the clock-synchronized slave mode, it is used as a ready-signal output pin; in the clock-synchronized master mode, it is used as a ready-signal input pin.

This pin is not used in the asynchronous mode, so it can be used as an I/O port.

B-III-8-2

EPSON

S1C33210 FUNCTION PART