8101 Datasheet, PDF (118/172 Pages) LSI Computer Systems – Gigabit Ethernet Controller

P[15:0]
Pause Time
[15:0], R/W
The contents of this register are inserted into the
pause_time parameter field of all autogenerated transmit
MAC control pause frames. Upon successful reception of
these autogenerated pause frames, a remote device
does not transmit data for a time interval equal to the
decimal value of this register times 512 ns.
P0 is the LSB.
Any pause time value less than or equal to 0x32 is sent
as 0x32.
4.3.18 Register 21–AutoNegotiation Base Page Transmit
15
14
13
12
11
9
8
7
6
5
4
0
NP
ACK
RF[2:1]
RES
PS_DIR PS
HDX FDX
RES
Note: NP 15-bit occurs on REGD15 pin
NP
Next Page Enable
NP
Description
1
Next page exists
0
No next page
15, R/W
ACK
Acknowledge
14, R/W
ACK
Description
1
Received AutoNegotiation word recognized
0
Not recognized
Note: Writing this bit has no effect on device operation. The
transmitted bit is controlled by internal state machine.
RF[2:1]
Remote Fault
RF[2:1]
Description
11
AutoNegotiation error
10
Offline
01
Link failure
00
No error, link OK
[13:12], R/W
4-30
Registers
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