參數(shù)資料
型號(hào)： CS8952-IQZ
廠商： Cirrus Logic Inc
文件頁數(shù)： 13/81頁
文件大?。?/td> 0K
描述： IC TXRX 100/10 PHY 100TQFP
標(biāo)準(zhǔn)包裝： 90
類型： 收發(fā)器
規(guī)程： MII
電源電壓： 4.75 V ~ 5.25 V
安裝類型： 表面貼裝
封裝/外殼： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-TQFP（14x14）
包裝： 托盤
產(chǎn)品目錄頁面： 759 (CN2011-ZH PDF)
其它名稱： 598-1208
CS8952
CrystalLAN 100BASE-X and 10BASE-T Transceiver
20
DS206F1
rupt signal to the controller when a change of state
has occurred in the CS8952, eliminating the need
for the system to poll the CS8952 for state changes.
The RX_EN signal allows the receiver outputs to
be electrically isolated. The ISODEF pin controls
the value of register bit ISOLATE in the Basic
Mode Control Register (address 00h) which in turn
electrically isolates the CS8952's MII data path.
3.1
Major Operating Modes
The following sections describe the four major op-
erating modes of the CS8952:
-
100BASE-X MII Modes (TX and FX)
-
100BASE-X Repeater Modes
-
10BASE-T MII Mode
-
10BASE-T Serial Mode
The choice of operating speed (10 Mb/s versus
100 Mb/s) is made using the auto-negotiation input
pins (AN0, AN1) and/or the auto-negotiation MII
registers. The auto-negotiation capability also is
used to select a duplex mode (full or half duplex).
Both speed and duplex modes can either be forced
or negotiated with the far-end link partner.
The digital interface mode (MII, repeater, or
10BASE-T serial) is selected by input pins
BPALIGN, BP4B5B and 10BT_SER as shown in
Table 1. Speed and duplex selection are made
through the AN[1:0] pins as shown in Table 5.
3.1.1
100BASE-X MII Application (TX
and FX)
The CS8952 provides an IEEE 802.3-compliant
MII interface. Data is transferred across the MII in
four-bit parallel (nibble) mode. TX_CLK and
RX_CLK are nominally 25 MHz for 100BASE-X.
The 100BASE-X mode includes both the TX and
FX modes, as determined by pin BPSCR (bypass
scrambler), or the BPSCR bit (bit 13) in the Loop-
back, Bypass, and Receiver Error Mask Register
(address 18h). In FX mode, an external optical
module is connected to the CS8952 via pins
TX_NRZ+, TX_NRZ-, RX_NRZ+, RX_NRZ-,
SIGNAL+, and SIGNAL-. In FX mode, the MLT-
3/NRZI conversion blocks and the scrambler/de-
scrambler are bypassed.
3.1.1.1
Symbol Encoding and Decoding
In 100BASE-X modes, 4-bit nibble transmit data is
encoded into 5-bit symbols for transmission onto
the media as shown in Tables 2 and 3. The encod-
ing is necessary to allow data and control symbols
to be sent consecutively along the same media
transparent to the MAC layer. This encoding caus-
es the symbol rate transmitted across the wire (125
symbols/second) to be greater than the actual data
rate of the system (100 symbols/second).
Operating Mode BPALIGN BP4B5B 10BT_SER
100BASE-X MII
0
10BASE-T MII
0
Table 1.
100BASE-X
Repeater
1Don’t
Care
0
01
0
10BASE-T Serial
Don’t
Care
Don’t
Care
1
Operating Mode BPALIGN BP4B5B 10BT_SER
Table 1.
DATA and CONTROL Codes (RX_ER = 0 or TX_ER = 0)
Name
5-bit Symbol
4-bit Nibble
Comments
DATA (Note 1)
0
11110
0000
1
01001
0001
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CS8952-IQZR 功能描述:以太網(wǎng) IC IC 100BASE-TX and 10BASE-T Transceiver RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
CS8952T 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:100BASE E-X AND 10BASE-T TRANSCEIVER
CS8952T-CQ 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:100BASE E-X AND 10BASE-T TRANSCEIVER
CS8952T-IQ 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:100BASE E-X AND 10BASE-T TRANSCEIVER
CS8952T-IQR 制造商:Cirrus Logic 功能描述:ETHERNET TXRX SGL CHIP 1-PORT 5V 10MBPS/100MBPS 100TQFP - Tape and Reel
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