LAN9303 Datasheet, PDF (63/366 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
Note:
The flow control values in the Port x PHY Auto-Negotiation Advertisement Register
(PHY_AN_ADV_x) and Virtual PHY Auto-Negotiation Advertisement Register
(VPHY_AN_ADV) are not affected by the values of the manual flow control register. Refer to
Section 7.2.5.1, "PHY Pause Flow Control," on page 97 and Section 7.3.1.3, "Virtual PHY
Pause Flow Control," on page 104 for additional information on PHY and Virtual PHY flow
control settings respectively.
Table 6.1 Switch Fabric Flow Control Enable Logic
- 1 XXX
Half
X
X
X
X
0
BP_EN_x
-X0XX
Half
X
X
X
X
0
BP_EN_x
- 1 XXX
Full
X
X
X
X
RX_FC_x TX_FC_x
-X0XX
Full
X
X
X
X
RX_FC_x TX_FC_x
1
0
1
0
X
X
X
X
X
X
0
0
20
1
1
0 Half (Note 6.1)
X
X
X
X
0
BP_EN_x
3
0
1
1
1
Half
X
X
X
X
0
BP_EN_x
4
0
1
1
1
Full
0
0
X
X
0
0
5
0
1
1
1
Full
0
1
0
X
0
0
6
0
1
1
1
Full
0
1
1
0
0
0
7
0
1
1
1
Full
0
1
1
1
0
1
8
0
1
1
1
Full
1
0
0
X
0
0
9
0
1
1
1
Full
1
X
1
X
1
1
10 0
1
1
1
Full
1
1
0
0
0
0
11 0
1
1
1
Full
1
1
0
1
1
0
Note 6.1 If Auto-negotiation is enabled and complete, but the link partner is not Auto-negotiation
capable, half-duplex is forced via the parallel detect function.
Note 6.2
For the Port 1 and Port 2 PHYs, these are the bits from the Port x PHY Auto-Negotiation
Advertisement Register (PHY_AN_ADV_x) and Port x PHY Auto-Negotiation Link Partner
Base Page Ability Register (PHY_AN_LP_BASE_ABILITY_x). For the Virtual PHY, these
are the local/partner swapped outputs from the bits in the Virtual PHY Auto-Negotiation
Advertisement Register (VPHY_AN_ADV) and Virtual PHY Auto-Negotiation Link Partner
Base Page Ability Register (VPHY_AN_LP_BASE_ABILITY). Refer to Section 7.3.1,
"Virtual PHY Auto-Negotiation," on page 102 for more information.
SMSC LAN9303/LAN9303i
63
DATASHEET
Revision 1.3 (08-27-09)