SH7721 datasheet(669/1524 Pages) RENESAS

Part #	SH7721

Description	Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

PDF	1524 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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669 / 1524 page

Section 18

Serial Communication Interface with FIFO (SCIF)

Rev. 3.00 Jan. 18, 2008 Page 607 of 1458

REJ09B0033-0300

18.3.9

Bit Rate Register (SCBRR)

SCBRR is an eight-bit readable/writable register that, together with the baud rate generator clock

source selected by the CKS1 and CKS0 bits in the serial mode register (SCSMR), determines the

serial transmit/receive bit rate.

Bit

Bit Name

Initial value

R/W

Description

7 to 0

SCBRD7 to

SCBRD0

H'FF

R/W

Bit Rate Set

The SCBRR setting is calculated as follows:

Asynchronous Mode:

1. When sampling rate is 1/16

N =

× 22n-1 × B

× 106 - 1

2. When sampling rate is 1/5

N =

× 22n-1 × B

× 106 - 1

3. When sampling rate is 1/11

N =

× 22n-1 × B

× 106 - 1

4. When sampling rate is 1/13

N =

× 22n-1 × B

× 106 - 1

5. When sampling rate is 1/27

N =

× 22n-1 × B

× 106 - 1

Synchronous Mode:

N =

× 22n-1 × B

× 106 - 1

SH7721 Datasheet(PDF) 669 Page - Renesas Technology Corp

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