RTL8169
2002/03/27
Rev.1.21
30
Asymmetric Pause:
When this bit is set, the value of bit7 (Pause)
indicates the direction that PAUSE frames are supported by the link partner.
PS1 PS2
Capability
0 0
No
Pause.
0
1
Asymmetric PAUSE toward link
partner.
1 0
Symmetric
PAUSE.
1
1
Both symmetric PAUSE and
asymmetric PAUSE toward local
device.
8:7 R PS2(ASM_DIR),
PS1(PAUSE)
6 R
HalfDup
Half Duplex:
When set, the link partner supports half duplex.
5 R
FullDup
Full Duplex:
When set, the link partner supports full duplex.
4:0 -
-
Reserved
6.22 PHYStatus: PHY(GMII or TBI) Status
(Offset 006Ch, R)
Bit
R/W
Symbol
Description
7 R
EnTBI
TBI Enable:
This bit is autoloaded from the EEPROM.
1: TBI mode, 0: GMII(MII) mode.
6 R
TxFlow
Transmit Flow Control:
1: Enabled, 0: Disabled.
5 R
RxFlow
Receive Flow Control:
1: Enabled, 0: Disabled.
4
R
1000MF
Link speed is 1000Mbps and in full-duplex. (GMII mode only)
3
R
100M
Link speed is 100Mbps. (GMII or MII mode only)
2
R
10M
Link speed is 10Mbps. (GMII or MII mode only)
1
R
LinkSts
Link Status. 1: Link Ok, 0: No Link.
0 R
FullDup
Full-Duplex Status:
1: Full-duplex mode, 0: Half-duplex mode.
-
MII registers polling cycle: 320ns * (32 MDC clock + 32 MDC clock) * 6 registers
6.23 RMS: Receive (Rx) Packet Maximum Size
(Offset 00DAh-00DBh, R)
Bit
R/W
Symbol
Description
15:14 -
-
Reserved
13:0 R/W
RMS
Rx packet Maximum Size:
i. This register should be always set to a value other than 0, in
order to receive packets.
ii.
The maximum size supported is 2
14
-1, i.e., 16K-1 bytes.