Cavli Wireless C100QM - 3.13 SDIO Interface

Cavli Wireless C100QM/C10QM Hardware Manual
54
Figure 3-22 I2C interface reference circuit diagram
3.13 SDIO interface
C100QM/C10QM module provides a 4-bit SD/MMC interface, supports 1.8V/2.95V two
voltage SD cards, clock frequency up to 50MHz, maximum capacity support 32GB,
support SD3.0 protocol.
Table 3-19 SD card pin definition
NO
.
Signal
name
I/
O
description
paramet
er
Level value (V)
remarks
min
Typical
max
23
SD_C
ARD_
DET
DI
SD card
insertion
detection
VIH
1.2
1.8
2
VIL
-0.3
0.6
28
SDC2
_D3
IO
SDIO bus
DATA3
VOH
1.35
1.8
2
1.8V voltage
domain
VOL
0
0.45
1.8V voltage
domain
VIH
1.27
1.8
2
1.8V voltage
domain
VIL
-0.3
0.6
1.8V voltage
domain
VOH
0.75*
VDD_
Px
2.95
VDD
_Px
2.95V voltage
domain
VOL
0
0.12
5*
VDD
2.95V voltage
domain