SH7059 Datasheet, PDF(488/1042 Page) Renesas Technology Corp – 32-Bit RISC Microcomputer

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SH7059 Datasheet, PDF (488/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

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16. Synchronous Serial Communication Unit (SSU)

Figure 16.1 shows a block diagram of the SSU.

Module data bus

SSTDR 0

SSTDR 1

SSTDR 2

SSTDR 3

SSRDR 0

SSRDR 1

SSRDR 2

SSRDR 3

SSCRH

SSCRL

SSMR

SSER

SSSR

Control circuit

Internal data bus

OEI

CEI

RXI

TXI

TEI

SSTRSR

Selector

Clock

Clock

selector

Ï

Ï/4

Ï/8

Ï/16

Ï/32

Ï/64

Ï/128

Ï/256

SSI

SSO

SCS

SSCK (External clock)

Legend:

SSCRH:

SS control register H

SSCRL:

SS control register L

SSMR:

SS mode register

SSER:

SS enable register

SSSR:

SS status register

SSTDR0 to SSTDR3: SS transmit data register 0 to 3

SSRDR0 to SSRDR3: SS receive data register 0 to 3

SSTRSR:

SS transmit/recive shift register

Figure 16.1 Block Diagram of SSU

Rev.3.00 Mar. 12, 2008 Page 398 of 948

REJ09B0177-0300

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