Kenwood 1050MD, Руководство по обслуживанию, Страница: 8 / 40

No. Name I/O Description
1 SCLK O Text data read clock
2 N.C. O No used
3 XMODE O Text data decoder reset L: Power Down
4~6 N.C. O No used
7 RESET I Reset signal input
8 Vdd - Microprocessor power supply
9,10 X2,1 - 12.5MHz oscillator
11 Vss - GND
12~20 N.C. O No used
21 CS O Chip select for SRAM control H: Power Down
22 WR O Write strobe for SRAM control
23 RD O Read strobe for SRAM control
24~27 N.C. O No used
28 A15 O No used
29~35 A14~A8 - SRAM control terminal (address BUS), A14~A8
36~43 D7~D0 - SRAM control terminal (address / data BUS) , D7~D0
44 STB O Address strobe signal output
45,46 GND - GND
47,48 N.C. O No used
49 CENA O Communication to main u-COM (enable)
50 CTXD I Communication to main u-COM (uart TXD)
51 CRXD O Communication to main u-COM (uart RXD)
52~55 N.C. O No used
56 Vdd - Microprocessor power supply
57~61 N.C. I GND
62 CTR I Cyber titler (J type only)
63 TXT I CD text (J type only)
64 Avdd - A/D power supply terminal (+5V)
65 AVref1 - A/D reference voltage
66 AVss - A/D GND
67,68 N.C. O No used
69 AVref2 - D/A reference voltage
70 AVref3 - D/A GND
71,72 N.C. I Noused
73 DQSY I Text data reading permitted terminal L: Interrupt
74~77 N.C. I No used
78 SRDT I Text data reading line
79 RXD I Communication to cyber titler (UART) (J type only)
80 TXD O Communication to cyber titler (UART) (J type only)
1050MD/DM-5090/DM-9090
8
CIRCUIT DESCRIPTION
2-2 Pin description (uPD784035GC)
1050MD/DM-5090(K) COVER 97.11.28 2:25 AM y [ W 15
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