User's Manual

LE920A4 HW User Guide Hardware Interfaces
Doc#: 1VV0301261 Peripheral Ports
Rev. 4.3 Page 78 of 123 2017-12-07
8.5.2. I2C - Inter-integrated Circuit
The module supports an I2C interface on the following pins:
Table 30: I2C Signals
PAD Signal I/O Function Type Comments
C14 I2C_SCL O I2C Clock 1.8V
D13 I2C_SDA I/O I2C Data 1.8V
The I2C interface is used for controlling peripherals inside the module (such as codec,
etc.).
The I2C can also be used externally by the end customer application. However, to avoid
conflicts, the following addresses must not be used externally by the customer:
• Address 0x30 (8 bit, write), 0x31 (8 bit, read)
• Address 0x90 (8 bit, write), 0x91 (8 bit, read)
In addition, SW emulated I2C functionality can be used on GPIO 1-6 pins.
Any GPIO (among GPIO 1-6) can be configured as SCL or SDA.
The module supports I2C Master mode only.
NOTE:
SW-emulated I2C on GPIO lines is supported only from the modem side.
Refer to Ref 1: LE920A4 AT Command User Guide for command settings.
8.5.3. SD/MMC Card Interface
The module provides an SD port supporting the SD3.0 specification, which can be used to
support standard SD/MMC memory cards with the following features:
• Interface with SD/MMC memory cards up to 2 Tera Byte
• Max clock @ 2.95V - 50 MHz SDR
o Max Data: 25 MByte/s
o SD standard: HS-SDR25 at 2.95V
• Max clock @ 1.8V - 200 MHz SDR
o Max Data: 100 MByte/s
o SD standard: UHS-SDR104 at 1.8 V
• Max clock @ 1.8V - 50 MHz DDR
o Max Data: 50 MByte/s
o SD standard: UHS-DDR50 at 1.8 V