HD6432351 datasheet(609/1025 Pages) RENESAS

609 / 1025 page

Section 13 Serial Communication Interface (SCI)

Rev. 3.00 Sep 15, 2006 page 575 of 988

REJ09B0330-0300

Table 13.8 SMR Settings and Serial Transfer Format Selection

SMR Settings

SCI Transfer Format

Bit 7

Bit 6

Bit 2

Bit 5

Bit 3

CHR

STOP Mode

Data

Length

Multi

Processor

Bit

Parity

Bit

Stop Bit

Length

Asynchronous

8-bit data

1 bit

mode

2 bits

Yes

1 bit

2 bits

7-bit data

1 bit

2 bits

Yes

1 bit

2 bits

—

8-bit data

Yes

1 bit

—

2 bits

—

7-bit data

1 bit

—

Asynchronous

mode (multi-

processor

format)

2 bits

—

Clocked

synchronous mode

8-bit data

None

Table 13.9 SMR and SCR Settings and SCI Clock Source Selection

SMR

SCR Setting

SCI Transmit/Receive Clock

Bit 7

Bit 1

Bit 0

CKE1

CKE0

Mode

Clock

Source

SCK Pin Function

Internal

SCI does not use SCK pin

Outputs clock with same frequency as bit

rate

External

Asynchronous

mode

Inputs clock with frequency of 16 times

the bit rate

Internal

Outputs serial clock

Clocked

synchronous

mode

External

Inputs serial clock

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