Monitor Pinouts:
Monochrome - TTL (18.43 KHz - 720x350) 9-pin Sub-D connector:
Pins:
1 GND
2-5 Unused
6 Intensity
7 Video
8 Horizontal Sync TTL Positive
9 Vertical Sync TTL Negative
CGA - TTL (15.75 KHz - 320x200 or 640x200) 9-pin Sub-D connector:
Pins:
1 Ground
2 Unused
3 RED Video
4 GREEN Video
5 BLUE Video
6 Intensity
7 Unused
8 Horizontal Sync TTL Positive
9 Vertical Sync TTL Positive
IBM PCjr CGA (Berg style connector):
Pins:
A01 TV vertical drive (not for display)
A02 Ground
A03 TV horizontal drive (not for display)
A04 Blue (CGA pin 5)
A05 Red (CGA pin 3)
A06 Intensity (CGA pin 6)
A07 Green (CGA pin 4)
A08 Comp sync drive (not for display)
A09 Audio
B01 + Vertical drive (CGA pin 9)
B02 Ground
B03 + Horizontal drive (CGA pin 8)
B04 - B08 Ground
B09 frame ground (CGA pin 1)
EGA - TTL (15.74-21.85 KHz) 9-pin Sub-D connector:
Pins:
1 GND
2 Secondary RED Video
3 Primary RED Video
4 Primary GREEN Video
5 Primary BLUE Video
6 Secondary Green Video/Intensity
7 Secondary Blue Video
8 Horizontal Sync TTL Positive
9 Vertical Sync TTL Negative
IBM PGA (Professional Graphics Adapter):
Pins:
1 Red
2 Green
3 Blue
4 Composite sync.
5 Mode control
6 Red ground
7 Green ground
8 Blue ground
9 Ground
Original VGA (from 31.5 KHz up) 15-pin mini Sub-D (Three rows of 5 pins):
Pins:
1 Red (Analog)
2 Green (Analog)
3 Blue (Analog)
4 Reserved
5 Ground
6 Red Return
7 Green Return
8 Blue Return
9 No Connect
10 Ground
11 ID0. GND for Color monitors, NC for Mono monitors
12 ID1. NC for Color monitors, GND for Mono monitors. Some systems only
uses ID0 for monitr ID.
13 Horzontal Sync
14 Vertical Sync
15 No Connect
VESA Display Data Channel (DDC) Standard. 15-pin mini Sub-D:
Pins:
1 Red (Analog)
2 Green (Analog)
3 Blue (Analog)
4 Reserved
5 Return
6 Red Return
7 Green Return
8 Blue Return
9 +5 VDC (from host). Should only be used for DDC2 devices
10 Sync return
11 Monitor ID0 (optional)
12 Data (SDA)
13 Horzontal Sync
14 Vertical Sync
15 Data clock (SCL). Should only be used for DDC2 devices
There are 3 different protocols defined for DDC:
DDC1 - A unidirectional (display to host only) serial comm system which
provides basic display ID and feature support information (including
supported timings, display size, colorimetry and gamma, etc.) to the
host. This uses pin 12 on the 15-pin "VGA" connector as a data line.
DDC2B - Adds clock (pin 15) and return (pin 11) to enable at least ID
information to be obtained via an I2C interface. I2C is a
bidirectional interface, but display control via DDC2B is not
defined at this time.
DDC2AB - Full ID and control of the monitor via ACCESS.bus. As ACCESS.bus
is basically a command and protocol definition on top of the I2C
hardware interface, this uses the same lines as DDC2B.
VESA Feature Connector (a 2x13 pin-header or edge connector):
Pins:
1-8 Pixel data 0-7
9 Dot Clock
10 Blank
11 Horizontal Sync
12 Vertical Sync
13-16 Ground
17 External Video Select. When high pins 1-8 are outputs, when low
they are inputs. This pin has an internal pull-up.
18 External Sync Select. When high pins 10-12 are outputs.
This pin has an internal pull-up.
19 External Dot Clock Select. When high pin 9 is an output.
This pin has an internal pull-up.
20 No Connection
21-24 Ground
25-26 No Connection
Note: Pin numbers are 1-13 on the lower row (pin-header)/component side(edge)
and pins 14-26 on the other row/side. Low pins towards the back end.
Other sources may use A1-13,B1-13 or count across the pin-header.
BUS connectors pin listings:
ISA Bus.
Pins:
A1 -I/O CH CHK
A2 SD07
A3 SD06
A4 SD05
A5 SD04
A6 SD03
A7 SD02
A8 SD01
A9 SD00
A10 -I/O CH RDY
A11 AEN
A12 SA19
A13 SA18
A14 SA17
A15 SA16
A16 SA15
A17 SA14
A18 SA13
A19 SA12
A20 SA11
A21 SA10
A22 SA09
A23 SA08
A24 SA07
A25 SA06
A26 SA05
A27 SA04
A28 SA03
A29 SA02
A30 SA01
A31 SA00
B1 GND
B2 RESET
B3 +5V
B4 IRQ9
B5 -5V
B6 DRQ2
B7 -12V
B8 0WS
B9 +12V
B10 GND
B11 -SMEMW
B12 -SMEMR
B13 -IOW
B14 -IOR
B15 -DACK3
B16 -DRQ3
B17 -DACK1
B18 -DRQ1
B19 -REFRESH
B20 BCLK
B21 IRQ7
B22 IRQ6
B23 IRQ5
B24 IRQ4
B25 IRQ3
B26 -DACK2
B27 T/C
B28 BALE
B29 +5V
B30 OSC
B31 GND
C1 SBHE
C2 LA23
C3 LA22
C4 LA21
C5 LA20
C6 LA19
C7 LA18
C8 LA17
C9 -MEMR
C10 -MEMW
C11 SD08
C12 SD09
C13 SD10
C14 SD11
C15 SD12
C16 SD13
C17 SD14
C18 SD15
D1 -MEMCS16
D2 -I/OCS16
D3 IRQ10
D4 IRQ11
D5 IRQ12
D6 IRQ15
D7 IRQ14
D8 -DACK0
D9 -DRQ0
D10 -DACK5
D11 -DRQ5
D12 -DACK6
D13 -DRQ6
D14 -DACK7
D15 -DRQ7
D16 +5V
D17 -MASTER
D18 GND
Note: A & B are on the rearmost connector, C & D on the shorter front
connector, A & C are o the component side, B & D on the back side.
Lower numbers are towards the rear covers.
Note: This is the 16bit ISA bus, the 8bit bus is essentially just A & B
EISA Bus.
Pins:
A1 Not used
A2 Data 7
A3 Data 6
A4 Data 5
A5 Data 4
A6 Data 3
A7 Data 2
A8 Data 1
A9 Data 0
A10-11 Not used
A12 SA19
A13 SA18
A14 SA17
A15 SA16
A16 SA15
A17 SA14
A18 SA13
A19 SA12
A20 SA11
A21 SA10
A22 SA9
A23 SA8
A24 SA7
A25 SA6
A26 SA5
A27 SA4
A28 SA3
A29 SA2
A30 SA1
A31 SA0
B1 Ground
B2 Reserved
B3 +5V
B4 Not used
B5 -5V
B6 Not used
B7 -12V
B8 Not used
B9 +12V
B10 Ground
B11-19 Not used
B20 BCLK
B21-28 Not used
B29 +5V
B30 Not used
B31 Ground
C1 Not used
C2 LA23
C3 LA22
C4 LA21
C5 LA20
C6 LA19
C7 LA18
C8 LA17
C9 MRDC*
C10 Not used
C11 Data 8
C12 Data 9
C13 Data 10
C14 Data 11
C15 Data 12
C16 Data 13
C17 Data 14
C18 Data 15
D1 M16*
D2-15 Not used
D16 +5V
D17 Not used
D18 Ground
E1 CMD*
E2 START*
E3 EXRDY
E4 EX32*
E5 Ground
E7-9 Not used
E10 W-R
E11 Ground
E12-14 Not used
E15 Ground
E17 BE1*
E18 LA31*
E19 Ground
E20 LA30*
E21 LA28*
E22 LA27*
E23 LA25*
E24 Ground
E26 LA15
E27 LA13
E28 LA12
E29 LA11
E30 Ground
E31 LA9
F1 Ground
F2-3 +5V
F4-5 Not used
F7-8 Not used
F9 +12V
F10 M-IO
F11-12 Not used
F13 Ground
F14 Not used
F15 BE3*
F17 BE2*
F18 BE0*
F19 Ground
F20 +5V
F21 LA29*
F22 Ground
F23 LA26*
F24 LA24*
F26 LA16
F27 LA14
F28-29 +5V
F30 Ground
F31 LA10
G1 LA7
G2 Ground
G3 LA4
G4 LA3
G5 Ground
G7 Data 17
G8 Data 19
G9 Data 20
G10 Data 22
G11 Ground
G12 Data 25
G13 Data 26
G14 Data 28
G16 Ground
G17 Data 30
G18 Data 31
G19 Not used
H1 LA8
H2 LA6
H3 LA5
H4 +5V
H5 LA2
H7 Data 16
H8 Data 18
H9 Ground
H10 Data 21
H11 Data 23
H12 Data 24
H13 Ground
H14 Data 27
H16 Data 29
H17-18 +5V
H19 Not used
Note: A, B, C & D are the upper contacts, E, F, G & H the lower ones.
A, C, E & G are on the component side, B, D, F & H on the back side.
A, B, E & F are on the first (long) connector, C, D, G & H on the
second (short) connector.
Pins E6,E16,E25,F6,F16,F25,G6,G15,H6 and H15 do not exist
VESA Local Bus.
Pins:
A1 DAT1
A2 DAT3
A3 GND
A4 DAT5
A5 DAT7
A6 DAT9
A7 DAT11
A8 DAT13
A9 DAT15
A10 GND
A11 DAT17
A12 VCC
A13 DAT19
A14 DAT21
A15 DAT23
A16 DAT25
A17 GND
A18 DAT27
A19 DAT29
A20 DAT31
A21 ADR30
A22 ADR28
A23 ADR26
A24 GND
A25 ADR24
A26 ADR22
A27 VCC
A28 ADR20
A29 ADR18
A30 ADR16
A31 ADR14
A32 ADR12
A33 ADR10
A34 ADR8
A35 GND
A36 ADR6
A37 ADR4
A38 WBACK#
A39 BE0#
A40 VCC
A41 BE1#
A42 BE2#
A43 GND
A44 BE3#
A45 ADS#
A48 LRDY#
A49 LDEV#
A50 LREQ#
A51 GND
A52 LGNT#
A53 VCC
A54 ID2
A55 ID3
A56 ID4
A57 LKEN#
A58 LEADS#
B1 DAT0
B2 DAT2
B3 DAT4
B4 DAT6
B5 DAT8
B6 GND
B7 DAT10
B8 DAT12
B9 VCC
B10 DAT14
B11 DAT16
B12 DAT18
B13 DAT20
B14 GND
B15 DAT22
B16 DAT24
B17 DAT26
B18 DAT28
B19 DAT30
B20 VCC
B21 ADR31
B22 GND
B23 ADR29
B24 ADR27
B25 ADR25
B26 ADR23
B27 ADR21
B28 ADR19
B29 VCC
B30 ADR17
B31 ADR15
B32 VCC
B33 ADR13
B34 ADR11
B35 ADR9
B36 ADR7
B37 ADR5
B38 VCC
B39 ADR3
B40 ADR2
B41 N/C
B42 RESET#
B43 D/C#
B44 M/IO#
B45 W/R#
B48 RDYRTN#
B49 GND
B50 IRQ9
B51 BRDY#
B52 BLAST#
B53 ID0
B54 ID1
B55 GND
B56 LCLK
B57 VCC
B58 BS16#
Note: This is the VESA special 3rd connector (with the narrow traces), the two
other connectors are essentially the ISA 16bit connectors. Lower numbers
are towards the rear covers. A is the component side, B the backside.
Pins A46,A47,B46 and B47 do not exist.
PCI Bus.
Pins:
A1 TRST-
A2 +12V
A3 TMS
A4 TD1
A5 VCC
A6 INTA-
A7 INTC-
A8 VCC
A9 Reserved
A10 VCC
A11 Reserved
A12-A13 Ground
A14 Reserved
A15 RST-
A16 VCC
A17 GNT-
A18 GNC
A19 Reserved
A20 AD30
A21 +3.3V
A22 AD28
A23 AD26
A24 Ground
A25 AD24
A26 IDSEL
A27 +3.3V
A28 AD22
A29 AD20
A30 Ground
A31 AD18
A32 AD16
A33 +3.3V
A34 FRAME-
A35 Ground
A36 TRDY
A37 Ground
A38 STOP-
A39 +3.3V
A40 SDONE
A41 SBO-
A42 Ground
A43 PAR
A44 AD15
A45 +3.3V
A46 AD13
A47 AD11
A48 Ground
A49 AD9
A52 C/BE0-
A53 +3.3V
A54 AD6
A55 AD4
A56 Ground
A57 AD2
A58 AD0
A59 VCC
A60 REQ64-
A61 VCC
A62 VCC
B1 -12V
B2 TCK
B3 Ground
B4 TD0
B5 VCC
B6 VCC
B7 INTB-
B8 INTD-
B9 PRSNT1-
B10 Reserved
B11 PRSNT2-
B12 Ground
B13 Ground
B14 Reserved
B15 Ground
B16 CLK
B17 Ground
B18 REQ-
B19 VCC
B20 AD31
B21 AD29
B22 Ground
B23 AD27
B24 AD25
B25 +3.3V
B26 C/BE3-
B27 AD23
B28 Ground
B29 AD21
B30 AD19
B31 +3.3V
B32 AD17
B33 C/BE2-
B34 Ground
B35 IRDY-
B36 +3.3V
B37 DEVSEL-
B38 Ground
B39 LOOK-
B40 PERR-
B41 +3.3V
B42 SERR
B43 +3.3V
B44 C/BE1-
B45 AD14
B46 Ground
B47 AD12
B48 AD10
B49 Ground
B52 AD8
B53 AD7
B54 +3.3V
B55 AD5
B56 AD3
B57 Ground
B58 AD1
B59 VCC
B60 ACK64-
B61 VCC
B62 VCC
Note: A50,51 & B50,51 don't exist