DPC-181/183/381/382/383
3
CIRCUIT DESCRIPTION
1. Microprocessor : (MN171603 H3)
1–1 Pin description
Pin No. Pin name I/O Function description Active
1, 2 – I NOT USED
3 AVSS – GND
4 BBS O BBS CONTROL SIGNAL OUTPUT ON = "H"
5 DATA O REMOTE CONTROL SIGNAL OUTPUT
6, 7 – NOT USED
8 KEY I KEY INPUT
9 HOLD I HOLD ON/OFF CONTROL ON = "H"
10 ESP I ESP ON/OFF CONTROL ON = "L"
11 LOW BATTERY I BATTERY VOLTAGE DETECTION LOW BATT. = "H"
12 AVDD – SUPPLY VOLTAGE
13~15 VLC1~VLC3 – LCD DRIVER BIAS CONTROL
16~19 COM1~COM4 O LCD COMMON SIGNAL OUTPUT (COMMON1~4)
20~33 SEG0~SEG13 O LCD SEGMENT SIGNAL OUTPUT (SEG0~SEG13)
34, 35 SEG14, 15 O NOT USED
36 MODE-M I MEMORY SELECT 4M = "H" OTHER = "L"
37 D-CNT I DIGITAL OUT CONTROL OUT = "H" (ESP OFF)
38 MODE-A I USE CUE/REV MODE
39 MODE-B I NOT USED
40 STDBY O NOT USED
41~44 – – NOT USED
45 DOOR OPEN I DOOR SWITCH DETECTION OPEN = "H"
46 PSET I PICKUP INITIAL POSITION
47 BTCHK I BATT. VOLTAGE DIRECTION.
48~51 – I NOT USED
52 POWER O POWER SUPPLY CONTROL.
53 BAT O BATTERY CONTROL OUTPUT CHARGING = "H"
54 D MUTE O MUTE CONTROL ON = "H"
55 SBCK O SUB CODE READ TIMING CLOCK FOR MN662740RE
56 FCLK I FRAME CLOCK SIGNAL from MN662740RE
57 FLAG I FLAG SIGNAL INPUT from MN662740RE
58 IPFLAG I CORRECTION = "H"
59 – I GND
60 STAT I STATUS SIGNAL from DSP
61 SENSE I SENSITIVE SIGNAL from DSP
62 TLOCK I TRACKING SERVO IN = "L"
63 FLOCK I FOCUSING SERVO IN = "L"
64 MCLK O COMMAND CLOCK for MN662740RE
65 MDATA O COMMAND DATA for MN662740RE
66 MLD O COMMAND DATA LATCH (LOAD) for MN662740RE
67 – O NOT USED
68 RST I SYSTEM RESET INPUT
69 X1 I GND
70 X2 O NOT USED
71 Vss – GND
72 – O NOT USED
73 SMCK I EXTERNAL SYSTEM CLOCK = 4.2336MHz
DPC-183/383(k)1P98.4.243:26PM y[W 6
