Hardware Reference Manual
SOM
Version 1.0
- 32 -
eInfochips Confidential
Wireless Connectivity
With WCN3680B, it supports 802.11 b/g/n mode for 2.4GHz band and with external FEM
module; it supports 802.11 a/n/ac mode for 5GHz band.
WCN3680B also supports Bluetooth 4.2 LE and earlier.
With WGR7640 receiver, APQ8053 supports GPS location suite.
Power Management
Combination of PM8953 and PMI8952 interfaced through two 2-line SPMI.
Dedicated clock and reset lines; plus other GPIOs as needed.
6.2.2
Memory Interface
In ERAGON 624 SOM APQ8053 integrates with single Embedded Multi Chip Package (eMCP) has
dual function of LPDDR3 RAM and eMMC v5.1 flash. SOM supports up to 4GB of LPDDR3 RAM at
max. 933MHz clock and 64GB of eMMC flash.
The LPDDR3 has 32-bit wide bus width interfaced with APQ8053 through EBI.
The eMMC v5.1 has 8-bit wide bus width interfacing with APQ8053 through SDC1
interface.
6.2.3
Wi-Fi + BT Interface
The ERAGON 624 board deployed Qualcomm’s RF chip WCN3680B solution that integrates two different
wireless connectivity technologies into a single device, the interfaces are:
Dual-band 2.4GHz and 5GHz WLAN compliant with IEEE 802.11 a/b/g/n specifications and
supports external PA for both bands. ERAGON624 uses external PA at 5GHz band which also
supports IEEE802.11 ac mode for data rate up to MCS 9. .
Bluetooth compliant with the BT specifications version 4.2 (BR/EDR + BLE).
All above RF signal is routed through a single antenna. To connect external antenna on ERAGON 624
SOM board, U.FL connector is provided. In addition, support for chip antenna (PN# FR05-S1-NO-1-004
; Gain of 1.5dBi on 2.4GHz & 4.7dBi on 5GHz) is given on ERAGON 624 carrier card. In this case, RF
signal from SOM to carrier is carried through U.FL to U.FL cable.
6.2.4
GPS Interface
The ERAGON 624 board supports GPS interface, for which APQ8053 is interfaced with Qualcomm’s GNSS
receiver chip WGR7640. U.FL connector is provided on both SOM and Carrier card which are connected
through U.FL to U.FL cable. On carrier card GPS chip antenna (PN# 1575AT54A0010 ; Peak gain = 1.3dBi)
is used to receive GPS signals. Also we can connect external antenna on U.FL connector on SOM module.
Summary of Contents for Eragon 624 SOM
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