Dreamcast:Connector Pinouts: Difference between revisions

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(Extension port known pins)
(Add real signal names)
 
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== Extension Port ==
== Extension Port ==
Lower leftmost is pin 1, upper rightmost 50. Even pins along the top.
Lower leftmost is pin 1, upper rightmost 50. Even pins along the top when looking at exterior of console.
{| class="wikitable"
{| class="wikitable"
|+ CN501
|+ CN501
Line 122: Line 122:
|-
|-
! 5
! 5
| {{ActiveLow|MODEMCS}}
| {{ActiveLow|G2_MDMCSN}}
| enable modem/lan adapter
| Modem chip select
! 6
! 6
| {{ActiveLow|IRQA}}
| {{ActiveLow|G2_IRMDMIN}}
| used by modem/lan adapter
| used by modem/lan adapter
|-
|-
! 7
! 7
| ?
| {{ActiveLow|G2_RQDEVN}}
|
|
! 8
! 8
| ?
| {{ActiveLow|G2_RQEX1N}}
|
|
|-
|-
! 9
! 9
| ?
| {{ActiveLow|G2_RQEX0N}}
|
|
! 10
! 10
Line 150: Line 150:
|-
|-
! 13
! 13
| {{ActiveLow|IRQB}}
| {{ActiveLow|G2_IREXTN}}
| used by broadband adapter
| used by broadband adapter
! 14
! 14
| {{ActiveLow|LBE}}
| {{ActiveLow|G2_BLN}}
{{ActiveLow|WR}}
| Lower byte enable (output)
| Lower byte enable (output)
Write enable when MODEMCS low
Write enable when MODEMCS low
|-
|-
! 15
! 15
| ?
| {{ActiveLow|G2_STN}}
|
|
! 16
! 16
| {{ActiveLow|UBE}}
| {{ActiveLow|G2_BHN}}
{{ActiveLow|RD}}
| Upper byte enable
| Upper byte enable
Read enable when MODEMCS low
Read enable when MODEMCS low
Line 178: Line 176:
|
|
! 20
! 20
| {{ActiveLow|BTB}}
| {{ActiveLow|G2_DSN}}
| Bus termination B
| Bus termination B
|-
|-
! 21
! 21
| {{ActiveLow|AEN}}
| {{ActiveLow|G2_FRN}}
| Address enable
| Address enable
! 22
! 22
| {{ActiveLow|BTA}}
| {{ActiveLow|G2_TRN}}
| Bus Termination A
| Bus Termination A
|-
|-
Line 196: Line 194:
|-
|-
! 25
! 25
| AD15
| G2_AD15
|
|
! 26
! 26
| AD14
| G2_AD14
|
|
|-
|-
! ...
! 27
|colspan=5 style="text-align:center"|Address and Data multiplexed 16 bit bus
| G2_AD13
|
! 28
| G2_AD12
|
|-
! 29
| G2_AD11
|
! 30
| G2_AD10
|
|-
! 31
| G2_AD9
|
! 32
| G2_AD8
|
|-
! 33
| G2_AD7
|
! 34
| G2_AD6
|
|-
! 35
| G2_AD5
|
! 36
| G2_AD4
|
|-
! 37
| G2_AD3
|
! 38
| G2_AD2
|
|-
|-
! 39
! 39
| AD1
| G2_AD1
|
|
! 40
! 40
| AD0
| G2_AD0
|
|
|-
|-
! 41
! 41
| GND
| GND
| guard GND of system clock
|
! 42
! 42
| GND
| GND
| guard GND of system clock
|
|-
|-
! 43
! 43
| CLK
| CLK
| System Clock (25MHz
| G2 interface clock (25MHz)
! 44
! 44
| GND
| GND
Line 230: Line 267:
|
|
! 46
! 46
| {{ActiveLow|RESET}}
|G_RST
| System Reset
| System Reset
|-
|-
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|-
|-
! 49
! 49
| ?
| MIDIOUT
|
|
! 50
! 50
| ?
| MIDIIN
|
|
|}
|}

Latest revision as of 16:46, 22 April 2024


TODO: images of connectors.

Controller

Pin Name Description
1 D0 Serial Data
2 +5V
3 GND
4 Sense Grounded by controller
5 D1 Serial Data

A/V Connector

AV Connector
Pin Description TV Mode (V & Y/C Output) SCART (15khz RGBS) VGA (31khz RGBHV)
1 GND Ground
2 Audio Right Audio Right
3 Audio Left Audio Left
4 +12v DC +12v DC
5 +5v DC +5v DC
6 VGA Select N/C N/C GND
7 RGB Select N/C GND GND
8 VSYNC Present but unused Present but unused VGA VSYNC
9 HSYNC Present but unused Present but unused VGA HSYNC
10 CSYNC N/C? CSYNC N/C
11 C S-Video Chroma N/C? N/C
12 Y S-Video Luma N/C? N/C
13 V Composite Video N/C? N/C
14 B N/C Blue Blue
15 G N/C Green Green
16 R N/C Red Red

Serial Port

Pin Description
1 +5v
2 SCK?
3 GND
4 Rx
5 Tx
6 RTS
7 CTS
8 GND?
9 RESET?
10 +3.3v

Extension Port

Lower leftmost is pin 1, upper rightmost 50. Even pins along the top when looking at exterior of console.

CN501
Pin Name Description Pin Name Description
1 +5v 2 +5v
3 +5v 4 +5v
5 G2_MDMCSN Modem chip select 6 G2_IRMDMIN used by modem/lan adapter
7 G2_RQDEVN 8 G2_RQEX1N
9 G2_RQEX0N 10 GND
11 GND 12 GND
13 G2_IREXTN used by broadband adapter 14 G2_BLN Lower byte enable (output)

Write enable when MODEMCS low

15 G2_STN 16 G2_BHN Upper byte enable

Read enable when MODEMCS low

17 +3.3v 18 +3.3v
19 +3.3v 20 G2_DSN Bus termination B
21 G2_FRN Address enable 22 G2_TRN Bus Termination A
23 GND 24 GND
25 G2_AD15 26 G2_AD14
27 G2_AD13 28 G2_AD12
29 G2_AD11 30 G2_AD10
31 G2_AD9 32 G2_AD8
33 G2_AD7 34 G2_AD6
35 G2_AD5 36 G2_AD4
37 G2_AD3 38 G2_AD2
39 G2_AD1 40 G2_AD0
41 GND 42 GND
43 CLK G2 interface clock (25MHz) 44 GND
45 GND 46 G_RST System Reset
47 GND 48 GND
49 MIDIOUT 50 MIDIIN
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