LAN9312-NZW SMSC, LAN9312-NZW Datasheet - Page 271

• 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

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
BITS
16
15
14
13
12
11
10
9
8
Pass Bad Frames (PASSBAD)
When set, all incoming frames that passed address filtering are received,
including runt frames and collided frames. Refer to
Filtering," on page 114
Hash Only Filtering mode (HO)
When set, the address check Function operates in the Imperfect address
filtering mode for both physical and multicast addresses. Refer to
9.4.2, "Hash Only Filtering," on page 115
RESERVED
Hash/Perfect Filtering Mode (HPFILT)
When cleared (0), the LAN9312 will implement a perfect address filter on
incoming frames according the address specified in the Host MAC address
registers
MAC Address Low Register
When set (1), the address check function performs imperfect address
filtering of multicast incoming frames according to the hash table specified
in the multicast hash table register. If the Hash Only Filtering mode (HO) bit
15 is set, then the physical (IA) addresses are also imperfect filtered. If the
Hash Only Filtering mode (HO) bit is cleared, then the IA addresses are
perfect address filtered according to the MAC Address register Refer to
Section 9.4.3, "Hash Perfect Filtering," on page 115
information.
RESERVED
Disable Broadcast Frames (BCAST)
When set, disables the reception of broadcast frames. When cleared,
forwards all broadcast frames to the application.
Note:
Disable Retry (DISRTY)
When set, the Host MAC attempts only one transmission. When a collision
is seen on the bus, the Host MAC ignores the current frame and goes to the
next frame and a retry error is reported in the Transmit status. When reset,
the Host MAC attempts 16 transmissions before signaling a retry error.
RESERVED
Automatic Pad Stripping (PADSTR)
When set, the Host MAC strips the pad field on all incoming frames, if the
length field is less than 46 bytes. The FCS field is also stripped, since it is
computed at the transmitting station based on the data and pad field
characters, and is invalid for a received frame that has had the pad
characters stripped. Receive frames with a 46-byte or greater length field
are passed to the application unmodified (FCS is not stripped). When
cleared, the Host MAC passes all incoming frames to the host unmodified.
When wake-up frame detection is enabled via the WUEN bit of the
Host MAC Wake-up Control and Status Register
a broadcast wake-up frame will wake-up the device despite the
state of this bit.
(Host MAC Address High Register (HMAC_ADDRH)
for additional information.
(HMAC_ADDRL)).
DESCRIPTION
DATASHEET
for additional information.
271
Section 9.4, "Address
for additional
(HMAC_WUCSR),
and
Section
Host
TYPE
R/W
R/W
R/W
R/W
R/W
R/W
RO
RO
RO
Revision 1.7 (06-29-10)
DEFAULT
0b
0b
0b
0b
0b
0b
-
-
-