LE910Cx mPCIe Hardware Design Guide
1VV0301510 Rev. 13 Page 4 of 73 2021-07-07
4.3.1.1. +5V Source Power Supply Design Guidelines 21
4.3.1.2. +12V Source Power Supply Design Guidelines 22
4.3.2. Thermal Design Guidelines 23
4.3.3. Power Supply PCB Layout Guidelines 24
VAUX Power Output 26
GNSS LNA BIAS 26
5. ELECTRICAL SPECIFICATION 28
Absolute Maximum Ratings – Not Operational 28
Recommended Operating Conditions 28
6. DIGITAL SECTION 29
Logic Levels 29
Power On 30
Unconditional Restart 32
Power OFF Procedure 35
Control Signals 36
6.5.1. WAKE_N 37
6.5.2. W_DISABLE_N 38
6.5.3. LED_WWAN_N 38
6.5.4. PERST_N 39
Hardware Interfaces 40
6.6.1. USB Port 40
6.6.2. Serial Port 41
6.6.2.1. Modem Serial Port 1 Signals 42
6.6.2.2. RS232 Level Translation 42
6.6.3. I2C – Inter-integrated Circuit 44
6.6.4. Digital Audio 44
SIM Interface 45
7. RF SECTION 47
Band Variants 47
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