Set Auxiliary Mode Register. Bits 7 to 5 determine which register is set. Bits 4 to 0 specify the value to write into the register. Tables giving the values for bits 4 to 0 for each auxiliary mode register follow the main table.
Bit
Value
Meaning
7
128
CNT2 - Control Code 2
6
64
CNT1 - Control Code 1
5
32
CNT0 - Control Code 0
4-0
-
COM4-COM0 - Command Codes 4-0
Auxiliary Command Register. If CNT2-CNT0 are set to 000 (binary), bits 4 to 0 are defined by the following values:
Auxiliary Command
SET
CLEAR
Immediate Execute pon
0
xx
Chip Reset
2
xx
Finish Handshake
3
xx
Trigger
4
xx
Return to Local
5
13
Send EOI
6
xx
Non-Valid/Valid 2nd Cmd./Add.
7
15
Parallel Poll Flag
9
1
Goto Standby
16
xx
Take Control Asynchronously
17
xx
Take Control Synchronously
18
xx
Take Control Synch. on End
26
xx
Listen
19
xx
Listen in Continuous Mode
27
xx
Local Unlisten
28
xx
Execute Parallel Poll
29
xx
Send Interface Clear
30
22
Send Remote Enable
31
23
Disable System Controller
20
xx
Internal Counter Register. If CNT2-CNT0 are set to 001 (binary), bits 4 to 0 specify the State Change Prohibit Times.
Parallel Poll Register. If CNT2-CNT0 are set to 011 (binary), bits 4 to 0 have the following meaning:
Bit
Value
Meaning
4
16
Disables Participation in Parallel Poll
3
8
Logic Sense of Status
2-0
-
Data Line to Assert During Poll
Auxiliary Register A. If CNT2-CNT0 are set to 100 (binary), bits 4 to 0 have the following meaning.
Bit
Value
Meaning
4
16
Select 8-bit EOS length
3
8
Enable Transmit of EOS
2
4
Enable Receive of EOS
1
2
RFD Hold Off on End
0
1
RFD Hold Off on All Data
Auxiliary Register B. If CNT2-CNT0 are set to 101 (binary), bits 4 to 0 have the following meaning.
Bit
Value
Meaning
4
16
Indicates the Value of ist
3
8
Active Level of The INT Pin
2
4
Sets high speed as T(1)
1
2
Enable Transmit of END in Serial Poll
0
1
Enable Setting of CPT bit if Undefined Cmd.
Auxiliary Register E. If CNT2-CNT0 are set to 110 (binary), bits 4 to 0 have the following meaning.
