BBK 9903S, Service Manual

Page: 29 / 94

MT1379
PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE
Pin Number Symbol Type Description
138 RD23 Inout
2~16MA, SR
PU/PD, SMT
DRAM data 23 /
Videoin Data PortA 7
139 RD22 Inout
2~16MA, SR
PU/PD, SMT
DRAM data 22 /
Videoin Data PortA 6
140 DVDD2 Power 2.5V power pin for internal digital circuitry
141 RD21 Inout
2~16MA, SR
PU/PD, SMT
DRAM data 21 /
Videoin Data PortA 5
142 RD20 Inout
2~16MA, SR
PU/PD, SMT
DRAM data 20 /
Videoin Data PortA 4
143 RD19 Inout
2~16MA, SR
PU/PD, SMT
DRAM data 19 /
Videoin Data PortA 3
144 RD18 Inout
2~16MA, SR
PU/PD, SMT
DRAM data 18 /
Videoin Data PortA 2
145 DVSS Ground Ground pin for internal digital circuitry
146 RD17 Inout
2~16MA, SR
PU/PD, SMT
DRAM data 17 /
Videoin Data PortA 1
147 RD16 Inout
2~16MA, SR
PU/PD, SMT
DRAM data 16 /
Videoin Data PortA 0
148 ABCK Output
4MA
Audio bit clock
149 ALRCK Inout
4MA,
PD, SMT
(1) Audio left/right channel clock
(2) Trap value in power-on reset :
1 : use external 373 0: use internal 373
150 DVDD3 Power 3.3V power pin for internal digital circuitry
151 ACLK Inout
4MA
Audio DAC master clock (384/256 audio sample frequency)
152 MC_DATA Input Microphone serial input
153 SPDIF Output
2~16MA,
SR : ON/OFF
SPDIF output
154 ASDATA0 Inout
4MA
PD SMT
(1) Audio serial data 0 (left/right channel)
(2) Trap value in power-on reset :
1 : manufactory test mode 0 : normal operation
155 ASDATA1 Inout
4MA
PD SMT
(1) Audio serial data 1 (surround left/surround right channel)
(2) Trap value in power-on reset :
1 : manufactory test mode 0 : normal operation
156 ASDATA2 Inout
4MA
PD SMT
(1) Audio serial data 2 (center/left channel)
(2) Trap value in power-on reset :
1 : manufactory test mode 0 : normal operation