Realtek RTL8169 - PHYStatus: PHY(GMII or TBI) Status; RMS: Receive (Rx) Packet Maximum Size

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.