LSI S pecification
MB86617A
Rev.1.0
Fujitsu VLSI
91
8.9. Physical register #0A, 0B, 0C (read/write)
Physical Register#0A, 0B, 0C are the registers that indicate bias detect condition of IEEE1394 installed in this node and performs setting
of enable/disable of IEEE1394 port.
phy/
link-
addr
R/W
Bit
15
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
R
Bias-0
12 h
W
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Disabl
ed-0
R
Bias-1
14h
W
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Disabl
ed-1
R
Bias-2
16h
W
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Disabl
ed-2
Initial Value
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
<
<
Description of Each Bit
BIT
Bit Name
Action
Value
Function
Read
-
Always indicates’0’.
15 - 2
reserved
Write
-
Always write in ‘0’.
0
Indicates that bias voltage is not detected at 1394 port n.
Read
1
Indicates that bias voltage is detected at 1394 port n.
1
Bias-n
Write
-
Always indicates ‘0’.
0
Enables 1394 port n.
0
Disabled-n
Read/
Write
1
Disable 1394 port n.