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| 型號： | E-1110 |
| 英文描述： | E-1110 10/100/1000 Mbits/s Ethernet MAC preliminary technical manual 4/01 |
| 中文描述： | 電子1110 10/100/1000 Mbits /秒以太網(wǎng)MAC初步的技術(shù)手冊4 / 01 |
| 文件頁數(shù)： | 58/108頁 |
| 文件大?。?/td> | 577K |
| 代理商： | E-1110 |
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Status and Conguration Signals
3-15
VLAN_PRIORITY[2:0]
Extracted VLAN Packet Priority
Output
VLAN_PRIORITY[2:0] contains the extracted 3-bit VLAN
priority from the received frame. This information is valid
whenever the VLAN_PKT signal is asserted. The format
is specied in the IEEE 802.1 VLAN standard.
VLAN_CFI
Extracted VLAN CFI
Output
The VLAN_CFI signal is the Canonical Format Indicator
bit in the received frame. This information is valid when-
ever the VLAN_PKT signal is asserted. The format is
specied in the IEEE 802.1 VLAN standard.
3.4 Status and Conguration Signals
The signals listed in this section allow the host to read status from the
E-1110 core and to congure its operation. Signal direction is from the
perspective of the E-1110 core.
MAC_SPEED_MODE
MAC Speed Mode
Input
This signal selects the speed of the MAC. When
asserted, MAC_SPEED_MODE selects the Gigabit mode
of operation. When deasserted, the signal selects the
10/100 mode of operation. This signal must be stable
under all conditions and after HARDRESET is
deasserted.
MAC_PHY_MODE
PHY Interface Mode for the MAC
Input
This signal selects the PHY interface mode for the
Gigabit MAC. When MAC_PHY_MODE is HIGH, the
interface is congured to TBI mode. When the signal is
LOW, the interface is congured in GMII mode. This
signal is don’t care or ignored if the MAC is congured in
the 10/100 mode of operation. The PHY interface mode
in 10/100 mode is always MII. This signal must be stable
under all conditions and after the HARDRESET signal is
deasserted.
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