SH7763 Datasheet, PDF (1388/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 31 Multimedia Card Interface (MMCIF)
31.3.21 Card Switch Register (CSWR)
CSWR indicates the state of the card identification signal.
Bit: 7
6
5
4
3
2
1
0
— — — — — — — CDB*
Initial value: 0
0
0
0
0
0
1
0
R/W: R
R
R
R
R
R
R
R
Initial
Bit
Bit Name Value R/W Description
7 to 2 
All 0 R
Reserved
These bits are always read as 0. The write value should
always be 0.
1

1
R
Reserved
This bit is always read as 1. The write value should
always be 1.
0
CDB*
0
R
Card Identification State Indication
Indicates insert/pullout of card
0: Card not inserted (mmc_cd = 1)
1: Card inserted (mmc_cd = 0)
Note: * mmc_cd = 0 indicates the card is inserted. The polarity of the card identification state
indication changes depending on the connector types.
Rev. 1.00 Oct. 01, 2007 Page 1322 of 1956
REJ09B0256-0100