LAN9311-NZW Standard Microsystem (Smsc), LAN9311-NZW Datasheet - Page 132

• Manufacturer Part Number: LAN9311-NZW
• Description: Ethernet Switch 2-Port 10Mbps/100Mbps 128-Pin XVTQFP
• Manufacturer: Standard Microsystem (Smsc)

Specifications of LAN9311-NZW

• Package: 128XVTQFP
• Phy/transceiver Interface: MII
• Number Of Primary Switch Ports: 2
• Maximum Data Rate: 100 Mbps
• Internal Memory Buffer Size: 32 KB
• Vlan Support: Yes
• Power Supply Type: Analog
• Minimum Single Supply Voltage: 3 V
• Maximum Single Supply Voltage: 3.6 V
• Maximum Supply Current: 0.295 A
• Maximum Power Dissipation: 1070 mW

Revision 1.7 (06-29-10)
9.8.7
9.8.8
Transmitter Errors
If the Transmitter Error (TXE) flag is asserted for any reason, the transmitter will continue operation.
TX Error (TXE) will be asserted under the following conditions:
Stopping and Starting the Transmitter
To halt the transmitter, the host must set the STOP_TX bit in the
(TX_CFG). The transmitter will finish sending the current frame (if there is a frame transmission in
progress). When the transmitter has received the TX status for this frame, it will clear the STOP_TX
and TX_ON bits, and will pulse the TXSTOP_INT in the
Once stopped, the host can optionally clear the TX Status and TX Data FIFOs. The host must re-
enable the transmitter by setting the TX_ON bit. If the there are frames pending in the TX Data FIFO
(i.e., TX Data FIFO was not purged), the transmission will resume with this data.
If the actual packet length count does not match the Packet Length field as defined in the TX
command.
Both TX command ‘A’ and TX command ‘B’ are required for each buffer in a given packet. TX
command ‘B’ must be identical for every buffer in a given packet. If the TX command ‘B’ words do
not match, the Ethernet controller will assert the Transmitter Error (TXE) flag.
Host overrun of the TX Data FIFO.
Overrun of the TX Status FIFO (unless TXSAO is enabled)
DATASHEET
132
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Interrupt Status Register
Transmit Configuration Register
SMSC LAN9311/LAN9311i
(INT_STS).
Datasheet