Huawei MU509 Series Development Kit Manual page 25

HUAWEI 30 mm x 30 mm LGA Module
Development Kit Guide
Figure 3-5 Mounting R645

When the PS_HOLD is toggled to "ON" side, it will be pulled up to 1.8 V. Please
keep PS_HOLD in "OFF" state anytime.

SIMS signal is used for internal test.
Figure 3-6 DIP Switch SW601 on the interface 30X30LGADB VER.A

UART1->HS: UART1 DB9 port on the mother board cannot be used. UART1
converts to USB signal on the interface board and can be tested through USB
cable connecting to PC. In this situation, UART1 can work as high-speed UART
if LGA module supports it. You should install the high-speed UART driver on the
PC before you use it. Please contact with Huawei engineer to get the driver.
Issue 05 (2016-12-12)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Interface Description
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