Service manual

GX30
6 – 5
CONFIDENTIAL
64 AOUT3R Output Headset receiver audio R-channel output
65 MCLK Input Master clock
66 CSFS Input Control serial port framing signal
67 AGND3 – Analog audio ground
68 LIGHT1 Output Charge LED control
69 ABBRESET Input Reset input
70 DGND – Digital ground
71 LIGHT2 Output USB charge enable
72 LIGHT3 Output Key-pad LED control
73 VCORE Output Digital core supply 1.72 - 1.9 V
74 VCOREIN Input Digital core regulator input
75 LGND – Light driver ground
76 VMIC Output Microphone supply 2.4 - 2.6 V
77 VCORE Output Digital core supply 1.72 - 1.9 V
78 VMEMIN Input Memory interface regulator input
79 AIN2P Input Headset mic audio positive input
80 AIN1P Input Mic audio positive input
81 CRST Output Power-on reset capacitor
82 VMEMIN Input Memory interface regulator input
83 VMEMSEL Input Memory supply voltage selection
84 VBAT5 Input Back-up battery regulator input
85 VBAT4 Input SIM interface regulator input
86 VRTCIN Input Real-time clock regulator input
87 DBBON Input Digital BB supply regulator on signal
88 SGND – AOUT2P/N ground
89* AOUT2N Output Not used
90* SPWR Input Not used
91* AOUT2P Output Not used
92* NC_R12 – Not used
93 AIN3L Input Sound IC audio L-channel input
94 AIN3R Input Sound IC audio R-channel input
95 AIN2N Input Headset mic audio negative input
96 AIN1N Input Mic audio negative input
97 RESET Output Reset output
98 VMEM Output Memory interface supply 2.75 - 3.05 V
99 VMEM Output Memory interface supply 2.75 - 3.05 V
100 VBACK Output Back-up battery supply 2.72 - 3.05 V
101 VBACKSEL Input Back-up battery supply voltage selection
102 VSIM Output SIM interface supply 2.75 - 2.95 V
103 VRTC Output Real-time clock supply 1.6 - 2.0 V
104 SGND – AOUT2P/N ground
105* AOUT2N Output Not used
106* SPWR Input Not used
107* AOUT2P Output Not used
108 LDOEN Output Regulator enable output
109 KEYOUT Output Power-on key output
110 KEYON Input Power-on key input
111 IBIAS Output Regulator bias current reference
112 AGND4 – Power management analog ground
113 AGND0 – Thermal ground for power supply
114 AGND0 – Thermal ground for power supply
115 AGND0 – Thermal ground for power supply
116 AGND0 – Thermal ground for power supply
117 AGND0 – Thermal ground for power supply
118 AGND0 – Thermal ground for power supply
119 AGND0 – Thermal ground for power supply
120 AGND0 – Thermal ground for power supply
121 AGND0 – Thermal ground for power supply
122 AGND0 – Thermal ground for power supply
123 AGND0 – Thermal ground for power supply
124 AGND0 – Thermal ground for power supply
125 AGND0 – Thermal ground for power supply
126 AGND0 – Thermal ground for power supply
127 AGND0 – Thermal ground for power supply
Pin No. Terminal name Input/Output Description of terminal