M38B53M4-059FP datasheet(126/355 Pages) MITSUBISHI

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2-38

38B5 Group User’s Manual

APPLICATION

2.3 Serial I/O

Serial I/O1 control register 2

b7 b6 b5 b4 b3 b2 b1 b0

Serial I/O1 control register 2

(SIO1CON2 • SC12: address 1A16)

Name

Functions

At reset R W

P62/SRDY1 •

P64/SBUSY1 pin

control bits

0: Functions as signal for

each 1-byte

1: Functions as signal for

each transfer data set

SBUSY1 output •

SSTB1 output

function selection bit

(Valid in serial I/O1

automatic transfer

mode)

Serial transfer

status flag

0: Output active

1: Output high-impedance

SOUT1 pin control

bit (when serial data

is not transferred)

0: CMOS 3 state (P-

channel output is valid.)

1: N-channel open-drain

output (P-channel output

is invalid.)

P51/SOUT1 P-channel

output disable bit

0: Serial transfer

completed

1: Serial transfer in-

progress

0 0 0 0: P62, P64 pins are I/O ports.

0 0 0 1: Not used

0 0 1 0: P62 pin is SRDY1 output; P64 pin is

I/O port.

0 0 1 1: P62 pin is SRDY1 output; P64 pin is

I/O port.

0 1 0 0: P62 pin is I/O port; P64 pin is

SBUSY1 input.

0 1 0 1: P62 pin is I/O port; P64 pin is

SBUSY1 input.

0 1 1 0: P62 pin is I/O port; P64 pin is

SBUSY1 output.

0 1 1 1: P62 pin is I/O port; P64 pin is

SBUSY1 output.

1 0 0 0: P62 pin is SRDY1 input; P64 pin is

SBUSY1 output.

1 0 0 1: P62 pin is SRDY1 input; P64 pin is

SBUSY1 output.

1 0 1 0: P62 pin is SRDY1 input; P64 pin is

SBUSY1 output.

1 0 1 1: P62 pin is SRDY1 input; P64 pin is

SBUSY1 output.

1 1 0 0: P62 pin is SRDY1 output; P64 pin is

SBUSY1 input.

1 1 0 1: P62 pin is SRDY1 output; P64 pin is

SBUSY1 input.

1 1 1 0: P62 pin is SRDY1 output; P64 pin is

SBUSY1 input.

1 1 1 1: P62 pin is SRDY1 output; P64 pin is

SBUSY1 input.

b3b2b1b0

Fig. 2.3.4 Structure of Serial I/O1 control register 2

M38B53M4-059FP Datasheet(PDF) 126 Page - Mitsubishi Electric Semiconductor

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