|
Data Bit
|
Definition
|
|
Bit 0
|
-ve TCK/SK on write
|
|
Bit 1
|
bit mode = 1 else byte mode
|
|
Bit 2
|
-ve TCK/SK on read
|
|
Bit 3
|
LSB first = 1 else MSB first
|
|
Bit 4
|
Do write TDI/DO
|
|
Bit 5
|
Do read TDO/DI
|
|
Bit 6
|
Do write TMS/CS
|
|
Bit 7
|
0
|
The write commands to TDI/DO take effect when bits 7 and 6 are '0'. Read TDO/DI will operate with TMS/CS output or TDI/DO output or on its own.