AMD
Table 2. TAXIchip Command Symbols
Encoded
Am7969 Receiver
Command Output
Am7968 Transmitter
Command Input
HEX
Binary
Symbol
Mnemonic
HEX
Binary
8-Bit Mode
0
0000
XXXXX XXXXX
11000 10001
Data
No Change
(Note 2)
0
No Change
(Note 2)
0000
No STRB
No STRB
(Note 1)
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
JK (8-bit Sync)
(Note 1)
1
11111 11111
01101 01101
01101 11001
11111 00100
01101 00111
11001 00111
11001 11001
00100 00100
00100 11111
00100 00000
00111 00111
00111 11001
00000 00100
00000 11111
00000 00000
I I
TT
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
2
3
TS
I H
TR
SR
SS
HH
HI
4
5
6
7
8 (Note 3)
9
A (Note 3)
B
HQ
RR
RS
QH
Q I
QQ
C
D (Note 3)
E (Note 3)
F (Note 3)
9-Bit Mode
0
000
XXXXXX XXXXX
011000 10001
Data
No Change
(Note 2)
0
No Change
(Note 2)
000
No STRB
No STRB
(Note 1)
001
LK (9-bit Sync)
(Note 1)
1
2
3
4
5
6
7
111111 11111
011101 01101
011101 11001
111111 00100
011101 00111
111001 00111
111001 11001
I ’ I
T ’ T
T’S
I’ H
T’R
S’R
S’S
1
2
3
4
5
6
7
001
010
011
100
101
110
111
010
011
100
101
110
111
10-Bit Mode
0
00
XXXXXX XXXXXX
011000 100011
Data
No Change
(Note 2)
0
No Change
(Note 2)
00
No STRB
No STRB
(Note 1)
01
LM (10-bit Sync)
(Note 1)
1
2
3
111111 111111
011101 011101
011101 111001
I ’ I ’
1
2
3
01
10
11
10
T ’ T ’
T ’ S ’
11
Notes:
1. Command pattern Sync cannot be explicitly sent by Am7968 Transmitter with any combination of inputs and STRB,
but is used to pad between user data.
2. A strobe with all Os on the Command input lines will cause Data to be sent. See Table 1.
3. While these Commands are legal data and will not disrupt normal operation if used occasionally, they
may cause data errors if grouped into recurrent fields. Normal PLL operation cannot be guaranteed if one or more
of these commands is continuously repeated.
Am7968/Am7969
15
AMD [ AMD ]
