Fujitsu MB86617A manual Physical register #07, 08, 09 read

LSI Specification MB86617A

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	Bit	Bit	Bit	Bit	Bit	Bit	Bit	Bit	Bit	Bit	Bit	Bit	Bit	Bit
link-	R/W
		15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
addr
0C h	R	-	-	-	-	-	-	-	-	Astat-0		Bstate-0		Child-	Connec	-	-
														0	ted-0
0E h	R	-	-	-	-	-	-	-	-	Astat-1		Bstate-1		Child-	Connec	-	-
														1	ted-1
10 h	R	-	-	-	-	-	-	-	-	Astat-2		Bstate-2		Child-	Connec	-	-
														2	ted-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
15 - 8	reserved	Read	-	Always indicate ‘0’.
				Indicate TPA line state of 1394 port n (MSB : 7 , LSB : 6).
				00	=	invalid
7 - 6	Astat-n	Read	-	01	=	‘1’
				10	=	‘0’
				11	=	‘Z’
				Indicate TPB line state of 1394 port n (MSB : 5 , LSB : 4).
5 - 4	Bstat-n	Read	-	00	=	invalid
				01	=	‘1’
				10	=	‘0’
				11	=	‘Z’
			0	Indicates that 1394 port n is parent port.
3	Child-n	Read
			1	Indicates that 1394 port n is children port.
			0	Indicates that cable is not connected to 1394 port n.
2	Connected-n	Read
			1	Indicates that cable is connected to 1394 port n.
1 - 0	reserved	Read	-	Always indicate ‘0’

Rev.1.0 90 Fujitsu VLSI