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LE910Cx HW User Guide
1VV0301298 Rev. 33
Page 77 of 128
2021-06-29
Not Subject to NDA
Note:
Qualcomm QCA9377 WiFi chipset may be supported on some of the
LE910Cx variants.
Please contact your Telit representative for more details.
The LE910Cx SDIO port supports the SDIO 3.0 specification at 1.8V CMOS only, so it cannot
be used as an external SD/MMC card connection.
The LE910Cx module supports an LTE/WiFi coexistence mechanism via the WCI (Wireless
Coexistence Interface) port, which connects between the module and the external WiFi
IC.
For a detailed explanation, refer to Ref 5: Telit_LE920A4_LE910Cx_Wi-
Fi_Interface_Application_Note_r1.
PAD
Signal
I/O
Function
Type
Comments
N13
WIFI_SD_CMD
O
WiFi SD Command
1.8V
L13
WIFI_SD_CLK
O
WiFi SD Clock
1.8V
200 MHz max.
J13
WIFI_SD_DATA0
I/O
WiFi SD Serial Data
0
1.8V
M13
WIFI_SD_DATA1
I/O
WiFi SD Serial Data
1
1.8V
K13
WIFI_SD_DATA2
I/O
WiFi SD Serial Data
2
1.8V
H13
WIFI_SD_DATA3
I/O
WiFi SD Serial Data
3
1.8V
L12
WIFI_SDRST
O
WiFi Reset / Power
enable control
1.8V
Active Low
M8
WCI_TX
O
Wireless
coexistence
interface TXD
1.8V
M9
WCI_RX
I
Wireless
coexistence
interface RXD
1.8V
Table 32: WiFi SDIO Interface Signals
Audio Interface
The LE910Cx module supports a digital audio interface.
8.6.1.
Digital Audio
The LE910Cx module can be connected to an external codec through the digital interface.
The product provides Digital Audio Interface (PCM/I2S) on the following pins: