Samsung SF-530 Series, Service Manual

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3-11
Samsung Electronics
CIRCUIT DESCRIPTION
Repair Manual
Pin Signal Label I/O Type 1 Interface 3 Pin Signal Label I/O Type 1 Interface 3
1 RESERVED - - 51 RESERVED - -
2 RS2 IA HOST Interface 52 VSUB GND -
3 RS3 IA HOST Interface 53 VSS GND -
4 RS4 IA HOST Interface 54 NC - NC
5 /CS IA HOST Interface 55 NC - NC
6 /WR IA HOST Interface 56 Sleep MI Modem Interconnect
7 /RD IA HOST Interface 57 VDD1 PWR -
8 /RDCLK OA DTE Serial Interface 58 RESERVED - -
9 /RLSD OA DTE Serial Interface 59 RESERVED - -
10 TDCLK OA DTE Serial Interface 60 NC - NC
11 TXD IA DTE Serial Interface 61 SR1IO MI Modem Interconnect
12 /CTS OA DTE Serial Interface 62 VCORE PWR -
13 VDD1 PWR - 63 VDD1 PWR -
14 RESERVED - - 64 XTCLK IA DTE Serial Interface
15 RESERVED - - 65 VSS GND -
16 VSS GND - 66 RESERVED - -
17 NC - NC 67 RXD OA DTE Serial Interface
18 /RESET OA Modem Interconnect 68 /DTR IA DTE Serial Interface
19 SR4OUT OA Modem Interconnect 69 VDD1 PWR -
20 NC - NC 70 IA_SLEEP MI Modem Interconnect
21 SR4IN IA Modem Interconnect 71 VGG PWR -
22 CLK_OUT OA Modem Interconnect 72 YCLK OA Overhead Signal
23 EYESYNC OA Diagnostic Signal 73 XCLK OA Overhead Signal
24 EYECLK OA Diagnostic Signal 74 EYEXY OA Diagnostic Signal
25 MAVSS GND - 75 /DSR OA DTE Serial Interface
26 MAVDD PWR - 76 /RI OA Telephone Line Interface
27 SPKR O(DF) Telephone Line Interface 77 RINGD IA Te lephone Line Interface
28 TXA2 O(DD) Telephone Line Interface 78 /RTS IA DTE Serial Interface
29 TXA1 O(DD) Telephone Line Interface 79 IRQ OA HOST Interface
30 VREF MI Modem Interconnect 80 VSS GND -
31 VC MI Modem Interconnect 81 GPO0 MI Modem Interconnect
32 RIN I(DA) Te lephone Line Interface 82 RESERVED - -
33 MAVSS AGND - 83 RESERVED - -
34 /POR IA Modem Interconnect 84 VDD1 PWR -
35 RESERVED - - 85 XTALI/CLKIN I Overhead Signal
36 RESERVED - - 86 XTALO O Overhead Signal
37 /TALK O(DD) Telephone Line Interface 87 D0 IA/OB HOST Interface
38 VDD PWR - 88 D1 IA/OB HOST Interface
39 RESERVED - - 89 D2 IA/OB HOST Interface
40 RESERVED - - 90 D3 IA/OB HOST Interface
41 NC - NC 91 D4 IA/OB HOST Interface
42 M_CNTRL_SIN IA Modem Interconnect 92 VDD1 PWR -
43 M_CLKIN IA Modem Interconnect 93 D5 IA/OB HOST Interface
44 M_TXSIN IA Modem Interconnect 94 D6 IA/OB HOST Interface
45 M_SCK IA Modem Interconnect 95 D7 IA/OB HOST Interface
46 M_RXOUT IA Modem Interconnect 96 RS0 IA/OB HOST Interface
47 M_STROBE IA Modem Interconnect 97 RS1 IA/OB HOST Interface
48 RESERVED - - 98 PLL_VDD PWR -
49 OH O(DD) Telephone Line Interface 99 VSS GND -
50 VDD PWR - 100 PLL_GND GND -
Notes:
1. I/O types:
MI = Modem interconnect.
IA, IB = Digital input.
OA, OB = Digital output.
I(DA) = Analog input.
O(DD), O(DF) = Analog output.
2.
NC = No external connection required.
RESERVED = No external connection allowed.
3. Interface Legend:
HOST = Modem Control Unit (Host)
DTE = Data Terminal Equipment
FM336 Pin Signals