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Section 16 Renesas Serial Peripheral Interface
R01UH0134EJ0400 Rev. 4.00 Page 803 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Bit Bit Name
Initial
Value R/W Description
6 to 4 All 0 R Reserved
The write value should always be 0. Otherwise,
operation cannot be guaranteed.
3
2
BRDV1
BRDV0
1
1
R/W
R/W
Bit Rate Division Setting
These bits are used to determine the bit rate. A bit
rate is determined by combinations of bits BRDV1
and BRDV 0 and the settings in the bit rate register
(SPBR) (see section 16.3.8, Bit Rate Register
(SPBR)). The settings in SPBR determine the base
bit rate. The settings in bits BRDV1 and BRDV0 are
used to select a bit rate which is obtained by dividing
the base bit rate by 1, 2, 4, or 8. In the bits SPCMD0
to SPCMD3, different BRDV1 and BRDV0 settings
can be specified. This permits the execution of serial
transfers at a different bit rate for each command.
00: Select the base bit rate
01: Select the base bit rate divided by 2
10: Select the base bit rate divided by 4
11: Select the base bit rate divided by 8