P Hysical Register #07, 08, 09 ( Read ) - Fujitsu MB86617A Specification Sheet

LSI S pecification
8.8. Physical register #07, 08, 09 (read)
Physical Register#07, 08, 09 are the registers that indicate signal condition of IEEE1394 port and cable connection condition.
phy/
Bit Bit
R/W
link-
15 14
addr
0C h R - -
0E h R - -
10 h R - -
Initial Value '0' '0'
< Description of Each Bit <
BIT Bit Name
15 - 8 reserved
7 - 6 Astat-n
5 - 4 Bstat-n
3 Child-n
2 Connected-n
1 - 0 reserved
Rev.1.0
Bit Bit Bit Bit
13 12 11 10
- - - -
- - - -
- - - -
'0' '0' '0' '0'
Action Value
Read - Always indicate '0'.
Indicate TPA line state of 1394 port n (MSB : 7 , LSB : 6).
00 = invalid
Read - 01 = '1'
10 = '0'
11 = 'Z'
Indicate TPB line state of 1394 port n (MSB : 5 , LSB : 4).
00 = invalid
Read -
01 = '1'
10 = '0'
11 = 'Z'
0 Indicates that 1394 port n is parent port.
Read
1 Indicates that 1394 port n is children port.
0 Indicates that cable is not connected to 1394 port n.
Read
1 Indicates that cable is connected to 1394 port n.
Read - Always indicate '0'
Bit Bit Bit Bit
9 8 7 6
- - Astat-0
- - Astat-1
- - Astat-2
'0' '0' '0' '0'
Function
90
MB86617A
Bit Bit Bit Bit
5 4 3 2
Child - C o nnec
Bstate-0
0 ted -0
Child - C o nnec
Bstate-1
1 ted -1
Child - C o nnec
Bstate-2
2 ted -2
'0' '0' '0' '0'
Fujitsu VLSI
Bit Bit
1 0
- -
- -
- -
'0' '0'