Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 1446 of 1823
Jul 31, 2019
RX23W Group 40. SD Host Interface (SDHIa)
40.2.21 Swap Control Register (SDSWAP)
Note 1. Do not rewrite this bit when the SDSTS2.CBSY flag is 1.
The SDSWAP register is used to select whether or not the byte endian is swapped when accessing the SDBUFR register.
Refer to
section 40.3.1 for details on the differences in accessing the SDBUFR register based on the SDSWAP register
value.
SDSWAP
Address(es): SDHI.SDSWAP 0008 ADE0h
b31 b30 b29 b28 b27 b26 b25 b24 b23 b22 b21 b20 b19 b18 b17 b16
— — — — — — — — — — — — — — — —
Value after reset:
0000000000000000
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
— — — — — — — —
BRSWP BWSWP
— — — — — —
Value after reset:
0000000000000000
Bit Symbol Bit Name Description R/W
b0 — Reserved This bit is 0 when read and cannot be modified. R
b1 — Reserved This bit is 0 when read. Set it to 0 when writing. R/W
b2 — Reserved This bit is 0 when read and cannot be modified. R
b4, b3 — Reserved These bits are 0 when read. Set them to 0 when writing. R/W
b5 — Reserved This bit is 0 when read and cannot be modified. R
b6 BWSWP SDBUFR Swap Write
*1
0: Normal write operation
1: Swap the byte endian before writing to the SDBUFR register
R/W
b7 BRSWP SDBUFR Swap Read
*1
0: Normal read operation
1: Swap the byte endian before reading the SDBUFR register
R/W
b10 to b8 — Reserved These bits are 0 when read and cannot be modified. R
b12, b11 — Reserved These bits are 0 when read. Set them to 0 when writing. R/W
b14, b13 — Reserved These bits are 0 when read and cannot be modified. R
b15 — Reserved This bit is 0 when read. Set it to 0 when writing. R/W
b31 to b16 — Reserved These bits are 0 when read and cannot be modified. R

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English