H
H
H
R
R
R
M
M
M
-
-
-
6
6
6
0
0
0
2
2
2
P
P
P
55
D-2.5 ACK Type E
ACK Byte + LB + EXTI + VIDI + AUDI + PLUG +.....+ CRC Byte
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
AB
ACC
0
0
Device ID (0 - 31)
LB
Length for the total data bytes (EXINF +.....+ DTMAX)
EXINF
LBMAX
0
0
0
0
0
FWVER
VEINF
EDID
0
0
0
0
0
0
0
AEINF
DTUF
DELAY
0
0
SW
TRE
BASS
VOL
PLUG
0
0
0
0
AOPD
VOPD
AIPD
VIPD
DTMAX
Delay Time Maximum (unit: 100 ms)
CB
CRC
AB & CB:
These are the same as the ACK Type A.
LB:
LB value is the total length of the data bytes, not include the AB, LB and CB.
EXINF:
Device extended information
LBMAX -
defines the maximum LB value of the variable length command
0 - The maximum LB is 64 Bytes (default)
1 - The maximum LB is 128 Bytes
2 - The maximum LB is 254 Bytes (255 is reserved)
3 – Reserved
The LB value of the Ack packet is not limited by LBMAX.
If the extended information does not exist, the default maximum length is 128.
FWVER -
Firmware version command flag. (Request 0x31)
1 - Support Firmware version command.
0 - Not support Firmware version command.
VEINF:
Video Extend Information
EDID -
Input EDID type select command flag. (Request 0x20 and 0x21)
1 - Support Input EDID type select command.
0 - Not support Input EDID type select command.
AEINF:
Audio Extend Information
VOL -
Volume and Mute command flag. (Request from 0x10 to 0x13)
1 - Support Volume and Mute command.
0 - Not support Volume command.
