Telit Wireless Solutions LE910C1-AP Hardware Design Guide

LE910Cx Hardware Design Guide
1VV0301298 Rev.40 Page 79 of 149 2023-03-16
Not Subject to NDA
PAD Signal I/O Function Type Comments
F13
VMMC - Power supply for
MMC card pull-up
resistors
1.8/2.95V Max Current is
50mA
Table 31: SD Card Signals
Figure 19 shows the recommended connection diagram of the SD interface.
Figure 19: SD/MMC Interface Connectivity
Note:
SD/MMC is only supported on the Linux side.
The power supply to the SD/MMC card must be supplied from the
Host application board. The LE910Cx does not provide a dedicated
power supply for the SD/MMC card.
The VMMC Supply is limited to 50mA so it can only supply the MMC
card external pull-up resistors.
The Pull-up resistors must be placed on the host application board.
The card detection input has an internal pull-up resistor.
VMMC can be used to enable the external power supply (LDO Enable
signal)
8.5.4. WiFi SDIO Interface
The LE910Cx provides an SDIO port supporting the SDIO3.0 specification, which can be
used to interface with a WiFi chipset (Qualcomm QCA65x4 chipset or other WiFi
solutions). The LE910Cx module includes an integrated SW driver to support the
Qualcomm QCA6574 chipset.
SD/MMC_DATA2
SD/MMC_DATA3
SD/MMC_CMD
SD/MMC_CLK
SD/MMC_DATA0
SD/MMC_DATA1
LE910Cx
SD/MMC Interface
SD/MMC_CD
DATA2
DATA3
CMD
VDD
VSS
DATA0
DATA1
MicroSD
MMC_CD
GND
GND
10
K
10
K
10
K
10
K
10
K
C=100nF
GND
External PS 3V
VMMC

Telit Wireless Solutions LE910C1-AP Specifications

General

Brand	Telit Wireless Solutions
Model	LE910C1-AP
Category	Control Unit
Language	English