H8SLASH3021 datasheet(359/712 Pages) RENESAS

359 / 712 page

11. Serial Communication Interface

Rev.2.00 Mar. 22, 2007 Page 335 of 684

REJ09B0352-0200

11.1.4

The SCI has the internal registers as listed in table 11.2. These registers select asynchronous or

synchronous mode, specify the data format and bit rate, and control the transmitter and receiver

sections.

Table 11.2

Registers

Channel

Address*

Name

Abbreviation

R/W

Initial Value

H'FFB0

Serial mode register

SMR

R/W

H'00

H'FFB1

Bit rate register

BRR

R/W

H'FF

H'FFB2

Serial control register

SCR

R/W

H'00

H'FFB3

Transmit data register

TDR

R/W

H'FF

H'FFB4

Serial status register

SSR

R/(W)*

H'84

H'FFB5

Receive data register

RDR

H'00

H'FFB8

Serial mode register

SMR

R/W

H'00

H'FFB9

Bit rate register

BRR

R/W

H'FF

H'FFBA

Serial control register

SCR

R/W

H'00

H'FFBB

Transmit data register

TDR

R/W

H'FF

H'FFBC

Serial status register

SSR

R/(W)*

H'84

H'FFBD

Receive data register

RDR

H'00

Notes: 1. Lower 16 bits of the address.

2. Only 0 can be written to clear flags.

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