Reference Manual

Hardware Reference Manual
Version 1.0 - 59 - eInfochips Confidential
6.3.14 GPS chip antenna
Connect the GPS external antenna on connector (J10)
Figure 25 – SBC Routing of UFL cable from SBC to IO Card (10)
6.3.15 M.2 (4G LTE) connector
ERAGON660 kit supports 75-pin M.2 connector (J11) to plug 4G LTE modem on IO card. This 4G
module is interfaced with first downstream port of USB Hub which it is connected to SDA660 processor,
MI2S_2 interface, and few other GPIOs of SDA660 and Dual SIM card connectors (SIM1-J27, SIM2-J26).
Figure 26 – IO Card M.2 connector (J11)
Figure 27 – IO Card SIM card connectors (J26 & J27)
Pinout specifications of J11 are below,
Pin Number
Net Name
J11.1
NC
Not Connected
J11.2
3.7V_LOAD_REG
3.7V Supply For LTE Modem
J11.3
GND
Ground
J11.4
3.7V_LOAD_REG
3.7V Supply For LTE Modem
J11.5
GND
Ground
J11.6
LTE_MODEM_POWER
LTE Modem Power Control Signal
J11.7
USB_HS_D_P_HOST1
USB High Speed Data Positive Signal
J11.8
LTE_MODEM_W_DISABLE#1
LTE RF Radio Disable control GPIO