Sharp FO-2970M, Service Manual

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FO-2970MU
NC = Not connect
RESERVED = No external connection allowed
Interface description: HOST = Modem control unit (Host)
DTE = Data terminal equipment
PIN Signal Name I/O Type Interface
3
51 RESERVED – –
52 VSUB GND –
53 VSS GND –
54 NC – NC
55 NC – NC
56 SLEEP MI Modem interconnect
57 VDD1 PWR –
58 RESERVED – –
59 RESERVED – –
60 NC – NC
61 SR1IO MI Modem interconnect
62 VCORE PWR –
63 VDD1 PWR –
64 XTCLK IA DTE Serial interface
65 VSS GND –
66 RESERVED – –
67 RXD OA DTE Serial interface
68 /DTR IA DTE Serial interface
69 VDD1 PWR –
70 IA_SLEEP MI Modem interconnect
71 VGG PWR –
72 YCLK OA Overhead signal
73 XCLK OA Overhead signal
74 EYEXY OA Diagnosis signal
75 /DSR OA DTE Serial interface
76 /RI OA Telephone lines interface
77 RINGD IA Telephone lines interface
78 /RTS IA DTE Serial interface
79 IRQ OA Host interface
80 VSS GND –
81 GPO0 MI Modem interconnect
82 RESERVED – –
83 RESERVED – –
84 VDD1 PWR –
85 XTALI/CLKIN I Overhead signal
86 XTALO O Overhead signal
87 D0 IA/OB Host interface
88 D1 IA/OB Host interface
89 D2 IA/OB Host interface
90 D3 IA/OB Host interface
91 D4 IA/OB Host interface
92 VDD1 PWR –
93 D5 IA/OB Host interface
94 D6 IA/OB Host interface
95 D7 IA/OB Host interface
96 RS0 IA/OB Host interface
97 RS1 IA/OB Host interface
98 PLL VDD PWR –
99 VSS GND –
100 PLL GND GND –
PIN Signal Name I/O Type Interface
3
1 RESERVED – –
2 RS2 IA Host interface
3 RS3 IA Host interface
4 RS4 IA Host interface
5 /CS IA Host interface
6 /WR IA Host interface
7 /RD IA Host interface
8 /RDCLK OA DTE Serial interface
9 /RLSD OA DTE Serial interface
10 TDCLK OA DTE Serial interface
11 TXD IA DTE Serial interface
12 /CTS OA DTE Serial interface
13 VDD1 PWR –
14 RESERVED – –
15 RESERVED – –
16 VSS GND –
17 NC – NC
18 /RESET OA Modem interconnect
19 SR4OUT OA Modem interconnect
20 NC – NC
21 SR4IN IA Modem interconnect
22 CLK_OUT OA Modem interconnect
23 EYESYNC OA Diagnosis signal
24 EYECLK OA Diagnosis signal
25 MAVSS GND –
26 MAVDD PWR –
27 SPKR O(DF) Telephone lines interface
28 TXA2 O(DD) Telephone lines interface
29 TXA1 O(DD) Telephone lines interface
30 VREF MI Modem interconnect
31 VC MI Modem interconnect
32 RIN I(DA) Telepone lines interface
33 MAVSS AGND –
34 /POR LA Modem interconnect
35 RESERVED – –
36 RESERVED – –
37 /TALK O(DD) Telephone lines interface
38 VDD PWR –
39 RESERVED – –
40 RESERVED – –
41 NC – NC
42 M_CNTRL_SIN IA Modem interconnect
43 M_CLKIN IA Modem interconnect
44 M_TXSIN IA Modem interconnect
45 M_SCK IA Modem interconnect
46 M_RXOUT IA Modem interconnect
47 M_STROBE IA Modem interconnect
48 RESERVED – –
49 OH O(DD) Telephone lines interface
50 VDD PWR –
5 – 19
FM336 (IC8) Terminal description
Notes:
I/O types: MI = Modem interconnect
IA, IB = Digital input OA, OB = Digital output
I(DA) = Analog input O(DD), O(DF) = Analog output