Product Info

LTE-A Module Series
EM121R-GL Hardware Design
EM121R-GL Hardware Design 6 / 80
4.3. PCIe Interface ........................................................................................................................... 41
4.3.1. Pin definition of PCIe ...................................................................................................... 41
4.3.2. Reference Design for PCIe ............................................................................................ 42
4.3.3. PCIe Timing .................................................................................................................... 43
4.3.3.1. PCIe Turn-on Timing ........................................................................................... 43
4.3.3.2. PCIe Turn-off Timing ........................................................................................... 44
4.3.3.3. PCIe Reset Timing .............................................................................................. 45
4.3.3.4. PCIe Modern Standby Timing ............................................................................. 46
4.4. PCM Interface* .......................................................................................................................... 47
4.5. Control and Indication Interfaces .............................................................................................. 49
4.5.1. W_DISABLE1# ............................................................................................................... 49
4.5.2. W_DISABLE2# ............................................................................................................... 50
4.5.3. WWAN_LED#................................................................................................................. 51
4.5.4. WAKE_ON_WAN#* ....................................................................................................... 51
4.5.5. DPR ................................................................................................................................ 52
4.5.6. WLAN_PA_EN* .............................................................................................................. 52
4.6. Cellular/WLAN COEX Interface* ............................................................................................... 53
4.7. Antenna Tuner Control Interface* ............................................................................................. 53
4.7.1. Antenna Tuner Control Interface through GPIOs .......................................................... 53
4.7.2. Antenna Tuner Control Interface through RFFE ............................................................ 54
4.8. Configuration Pins ..................................................................................................................... 54
5 RF Characteristics ............................................................................................................................. 56
5.1. Cellular Antenna Interfaces....................................................................................................... 56
5.1.1. Connector Definition ....................................................................................................... 56
5.1.2. Operating Frequency ..................................................................................................... 56
5.1.3. Receiving Sensitivity ...................................................................................................... 58
5.1.4. Output Power ................................................................................................................. 59
5.2. GNSS Antenna Interface .......................................................................................................... 62
5.2.1. General Description ....................................................................................................... 62
5.2.2. Connector Definition ....................................................................................................... 63
5.2.3. GNSS Frequency ........................................................................................................... 63
5.2.4. GNSS Performance ....................................................................................................... 64
5.3. Antenna Connectors ................................................................................................................. 64
5.3.1. Antenna Connector Location ......................................................................................... 64
5.3.2. Antenna Connector Size ................................................................................................ 65
5.3.3. Antenna Connector Installation ...................................................................................... 66
5.4. Antenna Requirements ............................................................................................................. 68
6 Electrical Characteristics and Reliability ........................................................................................ 70
6.1. Power Supply Requirements .................................................................................................... 70
6.2. Current Consumption ................................................................................................................ 70
6.2.1. PCIe Only Version .......................................................................................................... 70
6.2.2. USB Version ................................................................................................................... 71
6.3. Digital I/O Characteristic ........................................................................................................... 71