參數(shù)資料
型號(hào): ADM7008
廠商: Electronic Theatre Controls, Inc.
英文描述: Octal Ethernet 10/100M PHY
中文描述: 八路個(gè)10/100M以太網(wǎng)物理層
文件頁數(shù): 33/92頁
文件大?。?/td> 981K
代理商: ADM7008
ADM7008
Function Description
100Base-TX application. Alternatively, the receive data stream may be generated by an
external optical receiver as in a 100Base-FX application.
The receiver block consists of the following functional sub-blocks :
A/D Converter
Adaptive Equalizer and Timing Recovery Module
NRZI/NRZ and Serial/Parallel Decoder
Descrambler
Symbol Alignment Block
Symbol Decoder
Collision Detect Block
Carrier Sense Block
Stream Decoder Block
A/D Converter
High performance A/D converter with 125M sampling rate converts signals received on
RXP/RXN pins to 6 bits data streams; besides it possess auto-gain-control capability that
will further improve receive performance especially under long cable or harsh
detrimental signal integrity. Due to high pass characteristic on transformer, built in base-
line-wander correcting circuit will cancel it out and restore its DC level.
Figure 3-2 100Base-X Block Diagram and Data Path
Adaptive Equalizer and timing Recovery Module
All digital design is especial immune from noise environments and achieves better
ADMtek Inc.
3-3
M
RXD
4B/5B
DECODER
D
S
C
A
S
RX STATE
MACHINE
SYNC
RXD[3:0]
RXP
RXN
SDP
BP_DSCR
CRS
RXDV
RXER
100BASE-X RECEIVER
TX STATE
MACHINE
4
S
P
MLT-3
STATE
MACHINE
10/100
TX
DRIVER
FIBER
OPTIC
DRIVER
SYNC
TXD
COL
TXCLK
TXEN
TXER
TXD[3:0
]
BP_SCR
TXP
TXN
TXP
TXN
100BASE-X TRANSMITTER
A
TESTM
D
N
N
F
R
RXP
RXN
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