AM7968 AMD [Advanced Micro Devices], AM7968 Datasheet - Page 19

• Manufacturer Part Number: AM7968
• Description: TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface)
• Manufacturer: AMD [Advanced Micro Devices]

Notes:
1. Command pattern Sync cannot be explicitly sent by Am7968 Transmitter with any combination of inputs and STRB,
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
10-Bit Mode
8-Bit Mode
9-Bit Mode
but is used to pad between user data.
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.
A (Note 3)
D (Note 3)
E (Note 3)
8 (Note 3)
F (Note 3)
No STRB
No STRB
No STRB
(Note 1)
(Note 1)
(Note 1)
HEX
B
C
0
1
2
3
4
5
6
7
9
0
1
2
3
4
5
6
7
0
1
2
3
Am7968 Transmitter
Command Input
No STRB
No STRB
No STRB
(Note 1)
(Note 1)
(Note 1)
Binary
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
000
001
010
011
100
101
110
111
00
01
10
11
Table 2. TAXIchip Command Symbols
XXXXXX XXXXXX
XXXXXX XXXXX
XXXXX XXXXX
011000 100011
111111 111111
011101 011101
011101 111001
011000 10001
111111 11111
011101 01101
011101 11001
111111 00100
011101 00111
111001 00111
111001 11001
11000 10001
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
Encoded
Symbol
Am7968/Am7969
LM (10-bit Sync)
LK (9-bit Sync)
JK (8-bit Sync)
Mnemonic
T ’ S ’
T ’ T ’
Data
Data
Data
T ’ T
I ’ I ’
S’R
HQ
QH
QQ
T’S
T’R
S’S
TR
SR
SS
HH
RR
RS
Q I
TT
TS
I H
I ’ I
I’ H
I I
HI
No Change
No Change
No Change
(Note 2)
(Note 2)
(Note 2)
HEX
Am7969 Receiver
Command Output
C
D
0
1
2
3
4
5
6
7
8
9
A
B
E
F
0
1
2
3
4
5
6
7
0
1
2
3
No Change
No Change
No Change
(Note 2)
(Note 2)
(Note 2)
Binary
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
000
001
010
011
100
101
110
111
00
01
10
11
AMD
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