LAN9312-NZW SMSC, LAN9312-NZW Datasheet - Page 246

• Manufacturer Part Number: LAN9312-NZW
• Description: Ethernet ICs Hi Per 2 Port 10/100 Ethernet Switch
• Manufacturer: SMSC
• Type: Two Port Managed Ethernet Switchr

Specifications of LAN9312-NZW

• Ethernet Connection Type: 10 Base-T, 100 Base-TX
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Product: Ethernet Switches
• Number Of Transceivers: 1
• Standard Supported: 802.3, 802.3u
• Data Rate: 10 Mbps, 100 Mbps
• Supply Voltage (max): 3.3 V
• Supply Voltage (min): 0 V
• Supply Current (max): 186 mA, 295 mA
• Maximum Operating Temperature: + 70 C
• Package / Case: TQFP-100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Revision 1.7 (06-29-10)
14.2.8.1
31:16
BITS
15
14
13
12
11
10
9
8
RESERVED
(See
Reset (VPHY_RST)
When set, this bit resets all the Virtual PHY registers to their default state.
This bit is self clearing.
0: Normal Operation
1: Reset
Loopback (VPHY_LOOPBACK)
This bit enables/disables the loopback mode. When enabled, transmissions
from the Host MAC are not sent to the switch fabric. Instead, they are looped
back onto the receive path.
0: Loopback mode disabled (normal operation)
1: Loopback mode enabled
Speed Select LSB (VPHY_SPEED_SEL_LSB)
This bit is used to set the speed of the Virtual PHY when the
Negotiation (VPHY_AN)
0: 10 Mbps
1: 100 Mbps
Auto-Negotiation (VPHY_AN)
This bit enables/disables Auto-Negotiation. When enabled, the
LSB (VPHY_SPEED_SEL_LSB)
are overridden.
0: Auto-Negotiation disabled
1: Auto-Negotiation enabled
Power Down (VPHY_PWR_DWN)
This bit is not used by the Virtual PHY and has no effect.
Isolate (VPHY_ISO)
This bit is not used by the Virtual PHY and has no effect.
Restart Auto-Negotiation (VPHY_RST_AN)
When set, this bit updates the emulated Auto-Negotiation results.
0: Normal operation
1: Auto-Negotiation restarted
Duplex Mode (VPHY_DUPLEX)
This bit is used to set the duplex when the
is disabled.
0: Half Duplex
1: Full Duplex
Virtual PHY Basic Control Register (VPHY_BASIC_CTRL)
This read/write register is used to configure the Virtual PHY.
Note: This register is re-written in its entirety by the EEPROM Loader following the release or reset
Note
or a RELOAD command. Refer to
information.
14.16)
Offset:
Index (decimal):
bit is disabled.
1C0h
0
DESCRIPTION
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
and
Duplex Mode (VPHY_DUPLEX)
DATASHEET
Auto-Negotiation (VPHY_AN)
246
Section 10.2.4, "EEPROM Loader," on page 149
Size:
Speed Select
Auto-
32 bits
bits
bit
TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RO
SC
SC
SMSC LAN9312
DEFAULT
Datasheet
0b
0b
0b
1b
0b
0b
0b
0b
for more
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