Here are RS232C Serial Commands for Toshiba's new HD DVD Player

serial communications protocol consists of start codes (4bytes), function code (2bytes), and reversal function code (2 bytes) for Toshiba HD DVD Player

Start code 0x45 and 0xB5

Example to send a pause code "00"
0x45,0xB5,0x00,0xFF

Example to send a Play code "15"
0x45,0xB5,0x15,0xEA

RS232C protocol:

3 wire 9600bps /8 data bits /1 stop bit /no parity /no flow control
9 pin male D connector DB9

pin 2 is receive
pin 3 is transmit
pin 5 is signal ground



start code: "45 + "B5"

Table of functions

00 Pause/step
01 1
02 2
03 3
04 4
05 5
06 6
07 7
08 8
09 9
0A 0
0D Slow
12 Power ON/Standby
13 Forward
14 Stop
15 Play
16 Display (Navi)
19 Review
1B Cancel
20 Setup
21 Enter
22 Return
23 Skip (back)
24 Skip (forward)
25 +10
26 T. Search
27 Audio
28 Subtitle
29 Angle
2B Repeat (VCR=Play Mode)
31 Door
32 Tab
33 Cursor
34 A
35 B
36 C
37 D
38 Return from Menu (resume)
41 Dimmer
4D Right
4E I/P Selector (resolution)
51 Left
80 UP
81 Down
82 Upper Right
83 Lower Right
84 Menu
85 Lower Left
86 Upper LEFT (corrected code)
92 Power ON
93 Power OFF
9F HDMI
DE Title (Top Menu)
EF Clear
F5 Open/Close

what is the reversal function code and how do you determine it

Subtract the function code from 255 and you have the reversal function code.

anyone have luck getting serial control of the XA-1?

I tried lots of different code combos, tried a null modem adapter: no go

Mark,
where did this rs232 documentation come from? do you have the complete doc?

the documentation came from the Toshiba authorized dealer who sold me the XA-1:

I was provided 2 pages marked 'confidential' along with permission to post the info

can you email me the complete doc. I have a friend that's pretty good at figuring out rs232 protocols. I have 2 HD-XA1's that need to be controlled via rs232

well what I posted above is the entire thing!

ok, i'll send to him & see what he says.
btw, do you hapen to have rs232 protocols for Yamaha DVD-C950 and DPX-1300? I can't find the dealer link on the Yamaha website

Thanks I am content with the IR commands for now but it would be nice:

are you looking at Samsung BR too? I am tempted!

sorry: I don't have the Yamaha info

everything that i have seen about blue ray on avs places hddvd on top plus so expensive. also i have two xa1s that i need controlled serial so i will keep checking in to see if someone cracks it.

mark,

confirmed, HD-XA1 responds to serial commands per your doc. provided.
Must use Null Modem cable, since pins 2 & 3 are reversed (vs the Global Cache GC100-12).

Credit for the above goes to David Snipp, CEO of Stardraw Control, www.stardraw.com

btw, the HD-XA1's rs232 port is not bi-directional (at least, not yet), no feedback!

I am not having luck getting the RS-232 to work with the HD-XA1. Do I need to input the Hex serial code in a different way?

I'm using a T3, w/RP-6 and CM-232 w/Null Modem Adapter and Female/Female Coupler.

The command shown below is for PLAY.

Here is the answer to my question:

I didn't select "Hex" and I needed a 1ms delay. I tested many different delays; I found that 1ms worked 20 of 20 times.

I have attached a screen shot of what you need.

Can you email me this code? Thanks!