01604.pdf

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4020 SX
(250-4902/3)
Pinouts
Faxback Doc. # 1604
Video Port:
┌──────────┬───────────────────────────────────────┐
│Pin
│
Function
│
├──────────┼───────────────────────────────────────┤
│1
│
Red Video
│┌────\
│2
│
Green Video
││
6
\
│3
│
Blue Video
││
11
│
│4
│
Monitor ID Bit 2 (not used)
││1
│
│5
│
Ground
││
7
│
│6
│
Red Return (ground)
││
12
│
│7
│
Green Return (ground)
││2
│
│8
│
Blue Return (ground)
││
8
│
│9
│
Key (no pin)
││
13
│
│10
│
Sync return (ground)
││3
│
│11
│
Monitor ID Bit 0 (Not Used)
││
│
│12
│
Monitor ID Bit 1 (Not Used)
││
14
│
│13
│
Horizontal Sync
││4
│
│14
│
Vertical Sync
││
10
│
│15
│
Not Used
││
15
│
│
│
││5
/
└──────────┴───────────────────────────────────────┘└────/
Monochrome-type monitors use Green Video for all video input and ignore
Red Video and Blue Video.
Monitor ID Bits are not Used.
system is turned on.
PS/2 CONNECTORS
Keyboard, mouse, and auxiliary device connectors
PIN ASSIGNMENTS:
1.
2.
3.
4.
5.
6.
Data
Reserved
Ground
+5 Vdc
Clock
Reserved
5
*
┌─┐
*
4
│ │
3
*
└─┘
*
2
1
*
*
6
The monitor type is determined when your
RS-232C SERIAL PORT
/~~~~~~~~~~~\
/ 9
8
7
6 \
│5
4
3
2
1│
└─────────────────┘-
Pin assignments:
1.
2.
3.
4.
Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
5.
6.
7.
8.
9.
Signal Ground
Data Set Ready
Request to Send
Clear to Send
Ring Indicator
PARALLEL I/O PORT
/~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\
/ 25 24 23 22 21 20 19 18 17 16 15 14 \
│13
12 11 10
9
8
7
6
5
4
3
2
1│
└───────────────────────────────────────────────────┘
Pin assignment:
1. Strobe
2. Data Bit 0
3. Data Bit 1
4. Data Bit 2
5. Data Bit 3
6. Data Bit 4
7. Data Bit 5
8. Data Bit 6
9. Data Bit 7
10. ACKNOWLEDGE
11. BUSY
12. PAPER END
13. SELECT
14. AUTO FEED
15. ERROR
16. INITIALIZE
17. SELECT IN
18-25. Ground

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