SH7720 Datasheet, PDF (1053/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 30 SIM Card Module (SIM)
30.3.2 Bit Rate Register (SCBRR)
SCBRR is an 8-bit readable/writable register that sets the transmit/receive bit rate.
Bit
7 to 3
Bit Name

Initial
Value
All 0
2
BRR2
1
1
BRR1
1
0
BRR0
1
R/W
R
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Set the transmit/receive bit rate 2 to 0.
The SCBRR setting can be determined from the following formula.
Pφ
sck_frequency =
2 ( brr + 1)
The units of Pφ (peripheral clock frequency) and sck_frequency are MHz.
Rev. 3.00 Jan. 18, 2008 Page 991 of 1458
REJ09B0033-0300