Huawei EM770 - Page 57

HUAWEI EM770 HSPA PC Embedded Module V100R001
Product Specification
Issue 1
(2008-09-15)
Huawei Confidential: This documents is Huawei Proprietary and Confidential(NDA
Required).It may not be duplicated, neither distributed externally without
prior and written permission of Huawei.
Page
57 of 68
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When performing the wired connection test, connect the CMU200 to the RF
interface of the module by using the module-dedicated RF cable. (For the
connection method, see Figure 5-25.) The compensation for the line loss of the
CMU200 is about 0.7 dBm.
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When performing the wireless connection test, connect the module to the
debugging board by using the RF cable. Then connect the antennas to the RF
interface of the module directly. (For the connection method, see Figure 5-26.)
V. Test Method
After the preceding operations, if the LED below the mini PCI-E connector, you can
infer that the program is running. Then the following functions can be realized by
using the debugging board.
1. Controlling the states and testing the performance in each state
The debugging board is designed with pins. You can control the module state through
the pins. The silkscreen printing is used to label the pins on the debugging board.
You can manually control the power supply, dormant, waking up, and RF functions,
and the reset state through the following pins:
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J101: You can manually control the input enable signal (VEN) of the LTC3442
chip. When you connect the jumper header to the right of J101 (VEN is driven to
the low level), the power supply is cut off; when you remove the jumper header,
no impact is caused to the power output.
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J202: You can manually control the signal (WAKEUP_N) that the PC uses to
wake up the module. When you connect the jumper header to the left of J202
(WAKEUP_N is driven to the low level), the module works; when you connect
the jumper header to the right of J202 (driven to high level), the module
hibernates.
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J203: You can manually control the signal (WAKE_NB_N) that the module uses
to activate the PC. When you connect the jumper header to the left of J203
(WAKE_NB_N is driven to the low level), the PC can be activated and the main
power supplies the power; when you connect the jumper header to the right of
J203 (driven to the high level), no impact is caused to the PC.
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J204: You can manually control the module reset signal (PERST_N).When you
connect the jumper header to the right of J204 (PERST_N is driven to the low
level), the module is reset; when you remove the jumper header, the module
works normally.
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J205: You can manually control the signal (W_DISABLE_N) for disabling the RF
function of the module. When you connect the jumper header to the left of J205
(W_DISABLE_N is driven to the low level), the RF function of the module is
disabled and the module enters the offline mode; when you connect the jumper
header to the right of J205 (driven to the high level), the RF function of the
module is enabled.
You can manually control the PCM voice function of the debugging board through the
following pins:
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J501: You can manually control the signal (MICMUTE) for muting the
microphone used for the PCM voice function. When you connect the jumper
header to the left of the J501 (MICMUTE is driven to the high level), the
microphone is muted.
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