參數(shù)資料
型號(hào): 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): 69/108頁
文件大小: 577K
代理商: E-1110
E-110 Core Interface Signals
3-25
E1110_COL
Collision Detect
Input
When E1110_COL is asserted, it indicates that a collision
has been detected in the link. E1110_COL is an
asynchronous input.
E1110_CRS
Carrier Sense
Input
When E1110_CRS is asserted, it indicates the presence
of a non-idle medium. It is also asserted during
transmission of packets. It is deasserted whenever idle or
end of stream delimiter is detected in the receive data
stream.
SIGNAL_DETECT
Signal Detect for Gigabit MAC
Input
SIGNAL_DETECT is the signal detection input from the
TBI PCS module. The Gigabit MAC uses this signal to
keep the MAC under reset in the absence of signal
detection. The MAC also generates a reset pulse
whenever it sees SIGNAL_DETECT change from LOW to
HIGH.
3.9 E-110 Core Interface Signals
The signals in this section are used to interface the E-1110 core to the
external E-110 core. Signal direction is from the perspective of the
E-1110 core.
E110_TPD[7:0]
E-110 Transmit Data
Output
The E110_TPD[7:0] signals are the transmit data bus.
The E-1110 holds the TPD[7:0] signals valid for exactly
two MII_TCLK clock cycles.
E110_TPEF
E-110 Transmit Packet End of Frame
Output
The E-1110 asserts the E1110_TPEF signal to indicate
the last byte of the transmit packet is available from the
host. E110_TPEF must be valid for two MII_TCLK clock
periods before it is deasserted.
E110_TPRT
E-110 Transmit Retry Due to Collision/Error
Input
The E-110 MAC asserts the E110_TPRT signal to
indicate that the E-110 MAC function encountered at
least one collision during a transmit attempt. The MAC
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