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參數(shù)資料
| 型號(hào)： | MC92604VM |
| 廠商： | Freescale Semiconductor |
| 文件頁(yè)數(shù)： | 16/16頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ETH TXRX DUAL GIG 196-MAPBGA |
| 標(biāo)準(zhǔn)包裝： | 630 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 2/2 |
| 規(guī)程： | 千兆位以太網(wǎng) |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 196-LBGA |
| 供應(yīng)商設(shè)備封裝： | 196-MAPBGA（15x15） |
| 包裝： | 托盤 |
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MOTOROLA
MC92603 Quad and MC92604 Dual Gigabit Ethernet Transceivers
9
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Transmitting Coded Data - TBI or RTBI Modes
The PMA sublayer of the 1000BASE-X specication does not require any functional differences in the
transmitter from that used in the backplane application mode. Therefore, when operating in a mode specied
when the TBIE input is high, the state of the COMPAT input does not affect the transmitter operation. See
the previous ‘backplane’ section on transmitting coded data.
Receiver Functionality
The differential receiver recovers the serial transmitted data using an over-sampled transition tracking
method. The recovered serial data is accumulated into ten-bit code groups. The ten-bit code groups are
forwarded to the 8B/10B decoder and translated into the original 8-bit data. Alternately, the decoder can be
bypassed and the ten-bit code group is forwarded to the receiver interface.
The code group or byte boundaries within the serial data stream are determined by aligning to COMMA
(K28.1, K28.5, or K28.7) code groups. ‘Byte’ alignment is achieved when 4 COMMA code groups with the
same alignment are detected.
The receiver also provides for word synchronization (this feature is available only in ‘Backplane’ operating
modes). In this mode, all of the receivers are being used cooperatively to receive 32-bit (40 bit in TBI mode)
words. Word synchronization assures that the receivers present the four bytes of a word simultaneously at
the receiver output interface.
Interface Conguration
The receiver interface facilitates transfer of received data to the system. It also provides information on the
status of the link. Table 4 describes the signals involved in the conguration of the receiver ve operating
modes.
The received data is presented on the RECV_x_7 through RECV_x_0 signals when operating in the GMII
or 8-bit backplane modes. In the 10-bit backplane or TBI modes, RECV_x_ERR, RECV_x_DV become bits
9 and 8 respectively.
In the reduced interface modes the receiver signals RECV_x_7 through RECV_x_4 are not used and the 5th
and 9th data bits are output on the RECV_x_DV signal.
The receiver status and error reporting is coded onto the RECV_x_ERR, RECV_x_DV, RECV_x_COMMA
and RECV_x_K signals. Table 5 lists the description of the errors reported in the various receiver
operational modes.
Table 4. MC92603 Receiver Operating Modes (Common Features/Characteristics)
Operating Mode
BSYNC
COMPAT
TBIE
Backplane 10 or 5-bit Coded Data Modes - Non-aligned
Low
High
Backplane 10 or 5-bit Coded Data Modes - Aligned
High
Low
High
Backplane 8 or 4-Bit Byte Modes
High
Low
GMII or RGMII compatible Mode
High
Low
TBI or RTBI compatible Mode
High
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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