Sharp AM 900 - Digital Office Laser Copier, Руководство по обслуживанию

Страница: 80 / 168

AM-900U
5 – 7
4) FM336Plus (IC18) Terminal description
2) Speaker amplifier
The speaker amplifier (IC17) outputs the buzzer and ringer sound gen-
erated by Main CPU (IC1).
PIN I/O Name Interface PIN I/O Name Interface
1 — RESERVED NC 51 — RESERVED NC
2 IA RS2 HOST Interface 52 GND VSUB —
3 IA RS3 HOST Interface 53 GND VSS —
4 IA RS4 HOST Interface 54 — NC NC
5 IA /CS OHOST Interface 55 — NC NC
6 IA /WR HOST Interface 56 MI SLEEP Modem Interconnect
7 IA /RD HOST Interface 57 PWR VDD1 —
8 OA /RDCLK DTE Serial Interface 58 — NC NC
9 OA /RLSD DTE Serial Interface 59 — RESERVED NC
10 OA TDCLK DTE Serial Interface 60 — RESERVED NC
11 IA TXD DTE Serial Interface 61 MI SR1IO Modem Interconnect
12 OA /CTS DTE Serial Interface 62 PWR VCORE —
13 PWR VDD1 — 63 PWR VDD1 —
14 — RESERVED NC 64 IA XTCLK DTE Serial Interface
15 — RESERVED NC 65 GND VSS —
16 GND VSS — 66 — RESERVED NC
17 — NC NC 67 OA RXD DTE Serial Interface
18 IA /RESET Modem Interconnect 68 IA /DTR DTE Serial Interface
19 OA SR4OUT Modem Interconnect 69 PWR VDD1 —
20 — NC NC 70 MI IA SLEEP Modem Interconnect
21 IA SR4IN Modem Interconnect 71 PWR VGG —
22 OA CLK OUT Modem Interconnect 72 OA YCLK Overhead Signal
23 OA EYESYNC Diagnostic Signal 73 OA XCLK Overhead Signal
24 OA EYECLK Diagnostic Signal 74 OA EYEXY Diagnostic Signal
25 GND MAVSS — 75 OA /DSR DTE Serial Interface
26 PWR MAVDD — 76 OA /RI Telephone Line Interface
27 O(DF) SPKR Telephone Line Interface 77 IA RINGD Telephone Line Interface
28 O(DD) TXA2 Telephone Line Interface 78 IA /RTS DTE Serial Interface
29 O(DD) TXA1 Telephone Line Interface 79 OA IRQ HOST Interface
30 MI VREF Modem Interconnect 80 GND VSS —
31 MI VC Modem Interconnect 81 MI GP00 Modem Interconnect
32 I(DA) RIN Telephone Line Interface 82 — RESERVED NC
33 AGND MAVSS — 83 — RESERVED NC
34 IA /POR Modem Interconnect 84 PWR VDD1 —
35 — RESERVED NC 85 I XTALI/CLKIN Overhead Signal
36 — RESERVED NC 86 O XTALO Overhead Signal
37 O(DD) /TALK Telephone Line Interface 87 IA/OB D0 HOST Interface
38 PWR VDD — 88 IA/OB D1 HOST Interface
39 — RESERVED NC 89 IA/OB D2 HOST Interface
40 — RESERVED NC 90 IA/OB D3 HOST Interface
41 — NC NC 91 IA/OB D4 HOST Interface
42 IA M CNTRL SIN Modem Interconnect 92 PWR VDD1 —
43 IA M CLKIN Modem Interconnect 93 IA/OB D5 HOST Interface
44 IA M TXSIN Modem Interconnect 94 IA/OB D6 HOST Interface
45 IA M SCK Modem Interconnect 95 IA/OB D7 HOST Interface
46 IA M RXOUT Modem Interconnect 96 IA/OB RS0 HOST Interface
47 IA M STROBE Modem Interconnect 97 IA/OB RS1 HOST Interface
48 — RESERVED NC 98 PWR PLL VDD —
49 O(DD) OH Telephone Line Interface 99 GND VSS —
50 PWR VDD — 100 GNDPLL GND —
Notes:
1. I/O types: MI: Modem interconnect IA, IB:Digital input O(DD), O(DF):Analog input
I(DA): Analog input OA, OB:Digital output
2. NC= No external connection required. RESERVED= No external connection allowed.
3. Interface Legend:
HOST= Modem Control Unit (Host)
DET= Data Terminal Equipment