SH7721 datasheet(1052/1524 Pages) RENESAS

1052 / 1524 page

Section 30

SIM Card Module (SIM)

Rev. 3.00 Jan. 18, 2008 Page 990 of 1458

REJ09B0033-0300

30.3.1

Serial Mode Register (SCSMR)

SCSMR is an 8-bit readable/writable register that selects settings for the communication format of

the smart card interface.

Bit

Bit Name

Initial

Value

R/W

Description

7, 6



All 0

Reserved

These bits are always read as 0. The write value should

always be 0.



Reserved

This bit is always read as 1. The write value should

always be 1.

R/W

Parity Mode

Selects whether even or odd parity is to be used when

adding a parity bit and checking parity.

0: Even parity*

1: Odd parity*

Notes: 1. When set to even parity, during transmission a

parity bit is added such that the sum of 1 bits in

the parity bit and transmit characters is even.

During reception, a check is performed to

ensure that the sum of 1 bits in the parity bit

and the receive characters is even.

2. When set to odd parity, during transmission a

parity bit is added such that the sum of 1 bits in

the parity bit and transmit characters is odd.

During reception, a check is performed to

ensure that the sum of 1 bits in the parity bit

and the receive characters is odd.

3 to 0



All 0

Reserved

These bits are always read as 0. The write value should

always be 0.

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