FUJITSU MB86617A - Manual (Page 104)

LSI S pecification MB86617A
Rev.1.0 Fujitsu VLSI
99
8.17. Link register #02 (read/write)
Link Register#02 is the register that sets transfer mode of acknowledge packet transmitted by this node and disable setting
of Link layer.
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
40 h R/W - - - - - - - - - - - -
ack
mode
-
Link
Enable
-
Initial Value ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’’ ‘0’ ‘0’ ‘0’ ‘1’ ‘0’ ‘1’ ‘0’
< < Description of Each Bit
BIT Bit Name Action Value Function
Read - Always indicate ‘0’.
15 - 4 reserved
Write - Always write in ‘0’.
0
At receipt of normal packet.
Automatically transmits Acknowledge packet of “ack_pending” to all
request packet.
Automatically transmits Acknowledge packet of “ack _complete” to
all response packet.
Automatically transmits packet.
Code value of Acknowledge packet, automatically transmitted when
error is detected, depends on the kind of error.
3 ack mode
Read/
Write
1
At receipt of normal packet.
Automatically transmits Acknowledge packet of “ack_pending” to
Read request and Lock request.
Automatical ly transmits Acknowledge packet of “ack_complete” to
Write request packet and all response packet.
Code value of Acknowledge packet automatically transmitted when
error is detected depends on the kind of error.
Read - Always indicates ‘0’.
2 reserved
Write - Always write in ‘0’.
0 LINK layer is disabled.
1 Link Enable
Read/
Write
1 LINK layer is enabled.
Read - Always indicates ‘0’.
0 reserved
Write - Always write in ‘0’.