SITRONICS LCD-1502, Service Manual

Page: 33 / 40

Information of ICs
Pin No. Pin Name Function Pin No. Pin Name Function
1 AO1L Left SCART1 Audio Output 41 N/C Not used
2 AO1R Right SCART1 Audio Output 42 REG 5V Power Regulator Control
3-6 N/C Not used 43
RESET
Hardware Reset (Active Low)
7 VDDC 3.3V Power Supply for Audio DAC/ADC 44 SYSCK System Clock Output
8 GNDC 0 V Power supply for DAC/ADC 45 MCK
I
2
S Master Clock Oouptu
9 AI1L Left SCART1 Audio Input 46 VDD1 3.3V Power Supply for Digital Core & IO Cells
10 AI1R Right SCART1 Audio Input 47 GND1 0V Power Supply for Digital Core & IO Cells
11 VMC1
Switched V
REF
Decoupling Pin for Audio Converters
(VMCP)
48 N/C Not used
12 N/C Not used 49 GNDSP Substrate Analog/Digital Shield for Clock-PLL
13 VMC2 V
REF
Decoupling Pin for Audio Converters (VMC) 50-51 N/C Not used
14 A12L Left SCART2 Audio Input 52 XTI Crystal Oscillator Input
15 A12R Right SCART2 Audio Input 53 XTO Crystal Oscillator Output
16 VDDA 3.3V Power Supply for Audio Buffers, Matrix & Bias 54 VDDP 3.3V Power Supply for Analog PLL Clock
17 GNDAH 0V Power Supply for Audio Buffers & SCART 55 GNDP 0V Power Supply for Analog PLL Clock
18 AO2L Left SCART2 Audio Output 56 GND2 0V Power Supply for Digital Core, DSPs & IO Cells
19 AO2R Right SCART2 Audio Output 57 VDD2
3.3V Power Supply for Digital Core, DSPs & IO
Cells
20 VDDH 8V/5V Power Supply for SCART & Audio Buffers 58 CKTST Must be Connected to 0V
21 N/C Not used 59-60 N/C Not used
22 VREFA Voltage Reference for Audio Buffers 61 SDO
I
2
S Bus Data Output
23 A13L Left SCART3 Audio Input 62 ST/SDI
Stereo Detection Output / I
2
S Bus Data Input
24 A13R Right SCART3 Audio Input 63 WS
I
2
S Bus Word Select Output
25 N/C Not used 64 SCK
I
2
S Bus Clock Output
26 BGAP Bandgap Voltage Source Decoupling 65 BUS1
I
2
C Bus Expander Output 1
27 N/C Not used 66-67 N/C Not used
28 LSL Left Loudspeaker Output 68 BUS0
I
2
C Bus Expander Output 2
29 LSR Right Loudspeaker Output 69 IRQ
I
2
C Status Read Request
30 SW Subwoofer Output 70 N/C Not used
31 HPL Left Headphone Output 71 N/C Not used
32 HPR Ritht Headphone Output 72 N/C Not used
33 GNDSA Substrate Analog/Digital Shield 73 SIF Sound IF Input
34 N/C Not used 74 VTOP ADC V
TOP
Decoupling Pin
35
HPD
Headphone Detection Input (Active Low) 75 VREFIF AGC Voltage Reference Decoupling Pin
36 ADR
Hardware I
2
C Chip Address Control
76 VDDIF 3.3V Power Supply for IF AGC & ADC
37-38 N/C Not used 77 GNDIF 0V Power Supply for IF AGC & ADC
39 SCL
I
2
C Serial Clock
78 MONOIN Mono Input
40 SDA
I
2
C Serial Data
79-80 N/C Not used
IC701 (STV8216)
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