Rf Unit - Huawei U8950 Maintenance Manual

U8950 Maintenance Guide V1.0
Signal Name
SDC3_DATA1
SDC3_DATA0
SDC3_DATA7
SDC3_DATA6
SDC3_DATA5
SDC3_DATA4
SDC3_CLK
SDC3_CMD
VREG_DCDC_2P8
5
VREG_S3
MSM_RESOUT_N
VPH_PWR

10.2 RF Unit

Circuit Block Diagram
2012-10-22
Function
Data line
Data line
Data line
Data line
Data line
Data line
Clock
Command
Flash power
Power supply
Reset signal
2.85 V system
power supply,
which supplies
power to
the DC/DC chip.
Huawei Proprietary and Confidential
10 Principles and Failure Analysis
Test Reference Value or Oscillogram
2.9 V
2.9 V
65