M38B53M4-059FP datasheet(125/355 Pages) MITSUBISHI

125 / 355 page

38B5 Group User’s Manual

APPLICATION

2-37

2.3 Serial I/O

Serial I/O1 control register 1

b7 b6 b5 b4 b3 b2 b1 b0

Serial I/O1 control register 1

(SIO1CON1•SC11: address 1916)

Name

Functions

At reset R W

Serial transfer

selection bits

Serial I/O1

synchronous clock

selection bits

(P65/SSTB1 pin

control bits)

Serial I/O

initialization bit

0: Serial I/O initialization

1: Serial I/O enabled

Transfer mode

selection bit

Transfer direction

selection bit

0: LSB first

1: MSB first

0 0: Internal synchronous

clock (P65 pin is I/O

port.)

0 1: External synchronous

clock (P65 pin is I/O

port.)

1 0: Internal synchronous

clock (P65 pin is

SSTB1 output.)

1 1: Internal synchronous

clock (P65 pin is

SSTB1 output.)

0: SCLK11 (P53/SCLK12 pin

is I/O port.)

1: SCLK12 (P52/SCLK11 pin

is I/O port.)

0 0: Serial I/O disabled

(Pins P62, P64, P65,

P50–P53 pins are I/O

ports.)

0 1: 8-bit serial I/O

1 0: Not available

1 1: Automatic transfer

serial I/O (8 bits)

0: Full-duplex

(transmit/receive) mode

(P50 pin is SIN1 input.)

1: Transmit-only mode

(P50 pin is I/O port.)

b1b0

b3b2

Serial I/O1 clock pin

selection bit

Fig. 2.3.3 Structure of Serial I/O1 control register 1

M38B53M4-059FP Datasheet(PDF) 125 Page - Mitsubishi Electric Semiconductor

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