Samsung SC-148B, Service Manual

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NO SYMBOL DESCRIPTIONS NO SYMBOL DESCRIPTIONS
1 MA4 MICOM ADDRESS INPUT 51 VDD POWER SOURCE TERMINAL
2 MA5 MICOM ADDRESS INPUT 52 VDD POWER SOURCE TERMINAL
3 MA6 MICOM ADDRESS INPUT 53 VSS GROUND TERMINAL
4 MRD MICOM READ SIGNAL INPUT 54 TEST0 TEST TERMINAL
5 MWR MICOM WRITE SIGNAL INPUT 55 TEST1 TEST TERMINAL
6 MCE CHIP ENABLE SIGNAL INPUT 56 TB2 TEST TERMINAL
7 MINT INTERRUPT REQUEST OUTPUT 57 TB3 TEST TERMINAL
8 TESTOUT TEST OUTPUT 58 TB4 TEST TERMINAL
9 RST RESET TERMINAL 59 TB5 TEST TERMINAL
10 VDD POWER SOURCE TERMINAL 60 TB6 TEST TERMINAL
11 HD7 HOST DATA INPUT 61 TB7 TEST TERMINAL
12 HD8 HOST DATA INPUT 62 TB8 TEST TERMINAL
13 HD6 HOST DATA INPUT 63 VPB GROUND TERMINAL (DRAM AREA)
14 HD9 HOST DATA INPUT 64 TB9 TEST TERMINAL
15 VSS GROUND TERMINAL 65 TB10 TEST TERMINAL
16 HD5 HOST DATA INPUT 66 TB11 TEST TERMINAL
17 HD10 HOST DATA INPUT 67 TB12 TEST TERMINAL
18 HD4 HOST DATA INPUT 68 TB13 TEST TERMINAL
19 HD11 HOST DATA INPUT 69 TB14 TEST TERMINAL
20 VSS GROUND TERMINAL 70 TEST2 TEST TERMINAL
21 HD3 HOST DATA INPUT 71 TEST3 TEST TERMINAL
22 HD12 HOST DATA INPUT 72 VDDM POWER SOURCE TERMINAL
23 HD2 HOST DATA INPUT 73 VSSM GROUND TERMINAL
24 HD13 HOST DATA INPUT 74 ACHCK LRCK OUTPUT FOR DAC ON FAST PLAY
25 VSS GROUND TERMINAL 75 AZCK BASE CLOCK INPUT ON FAST PLAY
26 HD1 HOST DATA INPUT 76 SBSY SUBCODE BLOCK SYNC OUTPUT
27 HD14 HOST DATA INPUT 77 SFSY SUBCODE DATA SYNC FRAME INPUT
28 HD0 HOST DATA INPUT 78 SBDI SUBCODE DATA INPUT
29 HD15 HOST DATA INPUT 79 CLCK SUBCODE DATA CLOCK OUTPUT
30 VSS GROUND TERMINAL 80 C2PI DATA CORRECTION FLAG INPUT
31 HDRQ DATA REQUEST TERMINAL 81 LRCK CHANNEL CLOCK INPUT
32 HWR HOST WRITE SIGNAL INPUT 82 DAI DATA SIGNAL INPUT
33 HRD HOST READ SIGNAL INPUT 83 BCKI BIT CLOCK INPUT
34 IORDY IO TRANSFER READY OUTPUT 84 VSS GROUND TERMINAL
35 VSS GROUND TERMINAL 85 XI MASTER CLOCK I/O
36 CSEL CABLE SELECT INPUT 86 XO MASTER CLOCK I/O
37 HDAK DATA ACKNOWLEDGE INPUT 87 VDD POWER SOURCE TERMINAL
38 INTRQ INTERRUPT SIGNAL OUTPUT 88 MD0 MICOM DATA I/O
39 IOCS16 DATA BIT WIDE SELECT OUTPUT 89 MD1 MICOM DATA I/O
40 VSS GROUND TERMINAL 90 MD2 MICOM DATA I/O
41 HA1 HOST ADDRESS 1 INPUT 91 MD3 MICOM DATA I/O
42 PDIAG POST DIAGNOSTIC I/O 92 MD4 MICOM DATA I/O
43 HA0 HOST ADDRESS 0 INPUT 93 MD5 MICOM DATA I/O
44 HA2 HOST ADDRESS 2 INPUT 94 MD6 MICOM DATA I/O
45 HCS1 CHIP SELECT 1 INPUT 95 MD7 MICOM DATA I/O
46 HCS3 CHIP SELECT 3 INPUT 96 VSS GROUND TERMINAL
47 VSS GROUND TERMINAL 97 MA0 MICOM ADDRESS INPUT
48 DASP DRIVE ACTIVE OUTPUT 98 MA1 MICOM ADDRESS INPUT
49 ADA DATA OUTPUT FOR DAC ON FAST PLAY 99 MA2 MICOM ADDRESS INPUT
50 ABCK BCK OUTPUT FOR DAC ON FAST PLAY 100 MA3 MICOM ADDRESS INPUT
PIN DESCRIPTIONS