CY7C9689
Table 8. HOTLink TAXI Compatible Command Symbols
CY7C9689 (Transmitter)
CY7C9689 (Receiver)
Command Input
TXCMD[3:0]
Command Output
RXCMD[3:0]
Encoded
[44]
[42, 43]
[44]
HEX
Binary CMD
Symbol
Mnemonic
HEX
Binary CMD
8-bit mode (BYTE8/10 is HIGH)
0
1
2
3
4
5
6
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
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
JK (8-bit SYNC)
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
II
TT
TS
IH
TR
SR
SS
HH
HI
7
[45]
8
9
[45]
[45]
A
HQ
RR
RS
QH
QI
B
C
[45]
D
E
[45]
[45]
F
QQ
10-bit mode (BYTE8/10 is LOW)
0
1
2
3
00
01
10
11
011000 100011
111111 111111
011101 011101
011101 111001
LM (10-bit SYNC)
0
1
2
3
00
01
10
11
I’I’
T’T’
T’S’
Notes:
44. Binary CMD is the parallel input data which is input to the Transmitter and output from the Receiver. Binary bits are listed from left to right in the following order:
8-Bit mode (BYTE8/10 is HIGH and TXSC/D or RXSC/D is HIGH)—TXCMD/RXCMD[3], [2], [1], [0].
10-Bit mode (BYTE8/10 is LOW and TXSC/D or RXSC/D is HIGH)—TXCMD/RXCMD[1], [0].
45. 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.
34
CYPRESS [ CYPRESS ]
