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| 型号： | TS-MAC-XM-UT4 |
| 厂商： | Lattice Semiconductor Corporation |
| 文件页数： | 10/66页 |
| 文件大小： | 0K |
| 描述： | SITE LICENSE ETH MAC TRI-SPD XP |
| 标准包装： | 1 |
| 系列： | * |
| 其它名称： | TSMACXMUT4 |
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Lattice Semiconductor
Functional Description
The Tx MAC reads data from the Tx Client FIFO when the client indicates a packet is available, and the Tx MAC is
in its appropriate state. The Tx MAC pre-fixes the Preamble and the Start-of-Frame Delimiter information to the
data and appends the Frame Check Sequence at the end of the data. In half-duplex operation, the Tx MAC stores
the first 64 bytes of data from the external FIFO in an internal buffer, to be used in re-transmitting data on collisions.
The SGMII Easy Connect configuration option adds pins and logic for seamless connection to the Lattice Gigabit
Ethernet PCS IP core.
Figure 2-3. Un-Tagged Ethernet Frame Format
PREAMBLE
SFD
DESTINATION
SOURCE
LENGTH/
DATA/PAD
FRAME CHECK
ADDRESS
ADDRESS
TYPE
SEQUENCE
7 bytes
1 byte
6 bytes
6 bytes
2 bytes
46-1500 bytes
4 bytes
Figure 2-4. VLAN-Tagged Ethernet Frame Format
PREAMBLE
SFD
DESTINATION
SOURCE
VLAN TAG
LENGTH/
DATA/PAD
FRAME CHECK
ADDRESS
ADDRESS
HEADER
TYPE
SEQUENCE
7 bytes
1 byte
6 bytes
6 bytes
4 bytes
2 bytes
46-1500 bytes
4 bytes
Figure 2-5. Ethernet Control Pause Frame Format
PREAMBLE
SFD
DESTINATION
ADDRESS
SOURCE
ADDRESS
LENGTH/TYPE
88-08
MAC CTL
OP_CODE
OP_CODE
PARAMS/RSV
FRAME CHECK
SEQUENCE
01-80-C2-00-00-01
00-01
7 bytes
1 byte
6 bytes
6 bytes
2 bytes
2 bytes
60 bytes
4 bytes
A Tagged frame includes a 4-byte VLAN Tag field, which is located between the Source Address field and the
Length/Type field. The VLAN Tag field includes the VLAN Identifier and other control information needed when
operating with Virtual Bridged LANs as described in IEEE P802.1Q.
IPUG51_03.0, December 2010
10
Tri-Speed Ethernet MAC User’s Guide
相关PDF资料 |
PDF描述 |
|---|---|
| TS250-130F-2 | POLYSWITCH PTC RESET 0.13A SMD |
| TS250-130F-B-0.5-2 | POLYSWITCH PTC RESET 0.13A SMD |
| TS250-130F-RB-2 | POLYSWITCH PTC RESET 0.13A SMD |
| TS250-130F-RC-2 | POLYSWITCH PTC RESET 0.13A SMD |
| TS250-130F-RC-B-0.5-2 | POLYSWITCH PTC RESET 0.13A SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TSMBG0505C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SINGLE BIDIRECTIONAL BREAKOVER DIODE|100V V(BO) MAX|DO-215AA |
| TSMBG0506C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SINGLE BIDIRECTIONAL BREAKOVER DIODE|110V V(BO) MAX|DO-214AA |
| TSMBG0507C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SINGLE BIDIRECTIONAL BREAKOVER DIODE|145V V(BO) MAX|DO-214AA |
| TSMBG0509C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SINGLE BIDIRECTIONAL BREAKOVER DIODE|185V V(BO) MAX|DO-215AA |
| TSMBG0510C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SINGLE BIDIRECTIONAL BREAKOVER DIODE|200V V(BO) MAX|DO-214AA |
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