CD interface pinout?

[nodtveidt]

Anyone happen to have a pinout of the interface between the CDROM base unit and the CDROM drive for the briefcase setup? The PCE and TG setups seem to be identical here so it doesn't matter which it is. Also, I'm wondering if either side of the interface hookup can be replaced, and if anyone knows where to get said replacement parts.

[2X4]

Diagram from the back of the PC Engine/TurboGrafx, right side up:
 
AR GG 01 VM 32 30 27 GG 17 20 22 23 13 11 10 08 GG 05 03 GG VV VN VR
02 CD 35 34 VU 29 26 15 19 21 VJ 14 12 VG 09 07 06 04 24 VT 37 36 VP
AL VV VS 33 31 28 25 16 VL VK QQ VI VH QQ VF VE VD VC VB VA GG VZ VQ
 
Explanation of the codes:
 
## -- HuCard pinout of that number.  These are numbered 1-38 from right
      to left, from the front of the unit.  The following pins are
      represented:  1-17, 19-37.  (18 is ground, while 38 is +5V, so
      technically all 38 pins come out on the expansion bus.)
 
AR -- Audio Right
AL -- Audio Left
VZ -- External composite video, connected to R145.  Note -- this may need
      to be externally bypassed to ground with a capacitor to use directly
      as a video feed.   
 
VV -- +5V, regulated
GG -- Ground
 
CD -- CD 'sense' line.         PCE:  6280 P30    CD:  shorted to ground
QQ -- External voltage input.  PCE:  7805 P1     CD:  supplies +5V
 
VA -- 6270 P38  and  6260 P62
VB -- 6270 P37  and  6260 P63
VC -- 6270 P36  and  6260 P64
VD -- 6270 P35  and  6260 P65
VE -- 6270 P34  and  6260 P66
VF -- 6270 P31  and  6260 P67
VG -- 6270 P30  and  6260 P68
VH -- 6270 P29  and  6260 P69
VI -- 6270 P28  and  6260 P70
VJ -- 6270 P26  and  6260 P71
VK -- 6270 P25  and  6260 P72
VL -- 6270 P23  and  6260 P73
VM -- 6280 P59  and  6260 P79
VN -- 6260 P44
VP -- 6260 P47
VQ -- 6260 P49
VR -- 6260 P51
VS -- 6260 P61
VT -- 6270 P77
VU -- 6280 P45
 
The last set of abbreviations start with "V" because they mainly connect
directly to the video chips.  VU is the exception.
 
Note that VA through VL seem to be a 12-bit data-bus between the 6260 and
the 6270.  This implies to me that the 6260 is also involved in video
production; how exactly I have yet to determine.  Remember that the 6280 is
the main processor that runs the games; the other 2 are video coprocessors.

I pulled this off of briansemu.  Is this what you meant?

[nodtveidt]

No, but that is good information also. I'm talking about the interface between the CDROM base unit and the CDROM drive. In other words...the small connector on the base unit that plugs into the small detachable CDROM drive, which you then turn the locking mechanism for on the side of the base unit to secure the drive to the base unit.

[Joe Redifer]

RGB video also passes through the expansion port and can be tapped from the pins.  Using the diagram above, the pins would be:

VQ = Red
VP = Green
VR = Blue
VN = Sync
VV = +5v
GG = Ground

[NFG]

The complete expansion connector has been on my site for about a year:

http://www.gamesx.com/misctech/pcebp.php

[Air_Zonk]

While on the topic of the interface pinout, can a TG16 CD player be used with a PCE interface unit??? Thanks!

[SNKNostalgia]

It won't fit due to the design of the connection. Electronicly it should work perfect.

[nodtveidt]

No one has any information whatsoever? Hrm...guess I'll have to find a spare one and reverse engineer it myself...

[Michael Helgeson]

While on the topic of the interface pinout, can a TG16 CD player be used with a PCE interface unit??? Thanks!

The black discman drive will work on the Japanese briefcase unit perfectly fine. The only thing different between the white discman and the black one is external look on the lid/door.

[Dr.Wily]

up this thread, I search the pinout too.

[fraggore]

i got a jap cd unit inside my black tg16 cd case plugs and works fine on the tg16.

It won't fit due to the design of the connection. Electronicly it should work perfect.

that would explain way someone changed the insides