lan9303m Standard Microsystems Corp., lan9303m Datasheet - Page 206

• Manufacturer Part Number: lan9303m
• Description: Small Form Factor Three Port 10/100 Managed Ethernet Switch With Dual Mii/rmii/turbo Mii
• Manufacturer: Standard Microsystems Corp.

Revision 1.3 (08-27-09)
13.3.2.1
BITS
15
14
13
12
11
10
Reset (PHY_RST)
When set, this bit resets all the Port x PHY registers to their default state,
except those marked as NASR type. This bit is self clearing.
0: Normal operation
1: Reset
Loopback (PHY_LOOPBACK)
This bit enables/disables the loopback mode. When enabled, transmissions
from the Switch Fabric are not sent to network. Instead, they are looped
back into the Switch Fabric.
Note:
0: Loopback mode disabled (normal operation)
1: Loopback mode enabled
Speed Select LSB (PHY_SPEED_SEL_LSB)
This bit is used to set the speed of the Port x PHY when the
Negotiation (PHY_AN)
0: 10 Mbps
1: 100 Mbps
Auto-Negotiation (PHY_AN)
This bit enables/disables Auto-Negotiation. When enabled, the
LSB (PHY_SPEED_SEL_LSB)
overridden.
0: Auto-Negotiation disabled
1: Auto-Negotiation enabled
Power Down (PHY_PWR_DWN)
This bit controls the power down mode of the Port x PHY. After this bit is
cleared the PHY may auto-negotiate with it’s partner station. This process
can take up to a few seconds to complete. Once Auto-Negotiation is
complete, the
Register (PHY_BASIC_STATUS_x)
Note:
0: Normal operation
1: General power down mode
RESERVED
Port x PHY Basic Control Register (PHY_BASIC_CONTROL_x)
This read/write register is used to configure the Port x PHY.
Note: This register is re-written in its entirety by the EEPROM Loader following the release of reset
If loopback is enabled during half-duplex operation, then the
Enable Receive Own Transmit
Configuration Register (MAC_RX_CFG_x)
specified port. Otherwise, the Switch Fabric will ignore receive
activity when transmitting in half-duplex mode.
The PHY_AN bit of this register must be cleared before setting this
bit.
or a RELOAD command. Refer to
information.
Index (decimal): 0
Auto-Negotiation Complete
bit is disabled.
DESCRIPTION
and
Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
will be set.
Duplex Mode (PHY_DUPLEX)
DATASHEET
bit in the
bit of the
206
Section 8.4, "EEPROM Loader," on page 120
Port x MAC Receive
Size:
Port x PHY Basic Status
must be set for the
Speed Select
Auto-
16 bits
bits are
SMSC LAN9303M/LAN9303Mi
TYPE
R/W
R/W
R/W
R/W
R/W
RO
SC
Note 13.63
Note 13.64
DEFAULT
for additional
Datasheet
0b
0b
0b
-