lan9311 Standard Microsystems Corp., lan9311 Datasheet - Page 125
lan9311
Manufacturer Part Number
lan9311
Description
Lan9311/lan9311i Two Port 10/100 Managed Ethernet Switch With 16-bit Non-pci Cpu Interface
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9311.pdf
(460 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
lan9311-NU
Manufacturer:
CINCERA
Quantity:
3 023
Company:
Part Number:
lan9311-NU
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
lan9311-NU
Manufacturer:
SMSC
Quantity:
20 000
Company:
Part Number:
lan9311-NZW
Manufacturer:
Standard
Quantity:
2
Company:
Part Number:
lan9311-NZW
Manufacturer:
Microchip Technology
Quantity:
10 000
Company:
Part Number:
lan9311I-NZW
Manufacturer:
Standard
Quantity:
836
Company:
Part Number:
lan9311I-NZW
Manufacturer:
Microchip Technology
Quantity:
10 000
- Current page: 125 of 460
- Download datasheet (5Mb)
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
9.8.1
9.8.2
TX Buffer Format
TX buffers exist in the host’s memory in a given format. The host writes a TX command word into the
TX data buffer before moving the Ethernet packet data. The TX command A and command B are 32-
bit values that are used by the LAN9311/LAN9311i in the handling and processing of the associated
Ethernet packet data buffer. Buffer alignment, segmentation and other packet processing parameters
are included in the command structure. The buffer format is illustrated in
Figure 9.4
all of the data shown in this diagram is actually stored in the TX Data FIFO. This must be taken into
account when calculating the actual TX Data FIFO usage. Please refer to
Actual TX Data FIFO Usage"
TX Command Format
The TX command instructs the TX FIFO controller on handling the subsequent buffer. The command
precedes the data to be transmitted. The TX command is divided into two, 32-bit words; TX command
‘A’ and TX command ‘B’.
There is a 16-bit Packet Tag in the TX command ‘B’ command word. Packet Tags may, if host software
desires, be unique for each packet (i.e., an incrementing count). The value of the tag will be returned
in the TX status word for the associated packet. The Packet tag can be used by host software to
uniquely identify each status word as it is returned to the host.
shows the TX Buffer as it is written into the LAN9311/LAN9311i. It should be noted that not
Host Write
Order
2nd
Last
1st
3rd
Figure 9.4 TX Buffer Format
for a detailed explanation on calculating the actual TX Data FIFO usage.
31
Offset + Data DWORD0
Optional offset DWORD0
Optional offset DWORDn
DATASHEET
Optional Pad DWORDn
Optional Pad DWORD0
TX Command 'A'
TX Command 'B'
Last Data & PAD
125
.
.
.
.
.
.
.
.
.
.
.
0
Figure
Section 9.8.5, "Calculating
9.4.
Revision 1.2 (04-08-08)
Related parts for lan9311
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Interface, Integrated USB2.0 Compatible 3-Port Hub
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Lan91c100fd Rev. B Feast Fast Ethernet Controller With Full Duplex Capability
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Feast ? Ast Ethernet Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Com20022i 10 Mbps Arcnet Ansi 878.1 Controller With 2k X 8 On-chip Ram
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Lpc47n207 Lpc Super I/o Irda Hot Docking Chip With Uart Data Brief
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Advanced I/o With X-bus Interface
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Fdc37m707 Enhanced Super I/o Controller With Wake-up Features
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Twenty Pin Uart Tpuart Corporation
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Enhanced Small Device Interface Controller
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Emc1001 1.5?c Smbus Temperature Sensor In Miniature Sot-23
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Beta Compensation And Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Multiple Temperature Sensor With Beta Compensation And Hottest Of Thermal Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Resistance Error Correction & Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet: