3886 datasheet(162/380 Pages) RENESAS

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3886 Group User’s Manual

APPLICATION

2-45

2.4 Serial I/O

Fig. 2.4.6 Structure of Baud rate generator

Fig. 2.4.7 Structure of Serial I/O2 control register

Baud rate generator

b7b6b5b4b3 b2b1b0

Function

At reset

Baud rate generator (BRG) [Address : 1C16]

Set a count value of baud rate generator.

b7b6b5b4b3 b2b1b0

Function

At reset

Name

Serial I/O2 control register (SIO2CON) [Address : 1D16 ]

Serial I/O2 control register

0 0 0: f(XIN)/8

0 0 1: f(XIN)/16

0 1 0: f(XIN)/32

0 1 1: f(XIN)/64

1 1 0: f(XIN)/128

1 1 1: f(XIN)/256

Internal synchronous clock

selection bits

b2 b1 b0

Serial I/O2 port selection bit

0: I/O port (P71, P72)

1: SOUT2,SCLK2 signal output

SRDY2 output enable bit

0: I/O port (P73)

1: SRDY2 signal output

Transfer direction selection bit 0: LSB first

1: MSB first

Serial I/O2 synchronous clock

selection bit

0: External clock

1: Internal clock

Comparator reference input

selection bit

0: P00/P3REF input

1: Reference input fixed

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