User's Manual l MBa7x UM 0101 l © 2020, TQ-Systems GmbH
Page 42
4.2.9
SD card
The SD card slot is directly connected with the SDHC controller of the TQMa7x with a 4-bit interface.
The SDHC controller in the TQMa7x supports the UHS-I mode, which is not used on the MBa7x.
The maximum available mode is High-Speed. Booting from SD card is possible, see chapter 4.3.5.
All data lines are ESD protected.
TQMa7x
ESD
protection
SD card
socket
(X7)
SD1
Figure 30: Block diagram SD card
Figure 31: Position of SD card – X7
Table 52:
Type of SD card connector
Manufacturer / Number
Description
Yamaichi / FPS009-2405-0
SD-/MMC card connector
Table 53:
Pinout SD card – X7
Pin
Pin name
Signal
Remark
1
CD/DAT3/CS
SD1_DATA3
ESD protection
2
CMD/DI
SD1_CMD
10 kΩ Pull-Up to ESD protection
3
VSS1
DGND
–
4
VDD
VCC3V3
–
5
CLK
SD1_CLK
ESD protection
6
VSS2
DGND
–
7
DAT0/DO
SD1_DATA0
ESD protection
8
DAT1
SD1_DATA1
ESD protection
9
DAT2
SD1_DATA2
ESD protection
CDS
CARD_DETECT
SD1.CD#
10 kΩ Pull-Up to ESD protection
COM
COMMON
DGND
–
WP
WRITE_PROTECT
SD1.WP
10 kΩ Pull-Up to ESD protection
M1-2
SHIELD
DGND
SHIELD
