參數(shù)資料
型號(hào)： 78Q2120-64CGT
廠商： Electronic Theatre Controls, Inc.
英文描述： 10/100BASE-TX Ethernet Transceiver
中文描述： 10/100BASE-TX以太網(wǎng)收發(fā)器
文件頁(yè)數(shù)： 6/33頁(yè)
文件大?。?/td> 200K
代理商： 78Q2120-64CGT
78Q2120
10/100BASE-TX
Ethernet Transceiver
PIN DESCRIPTION
LEGEND
6
TYPE
DESCRIPTION
TYPE DESCRIPTION
A
Analog Pin
I
Digital Input
O
Digital Output
I/O
Digital Bi-directional Pin
S
Supply
OZ
Tri-stateable digital output
MII (MEDIA INDEPENDENT INTERFACE)
PIN
TX_CLK
64-PIN
27
80-PIN
33
TYPE
OZ
DESCRIPTION
TRANSMIT CLOCK: TX_CLK is a continuous clock which provides a
timing reference for the TX_EN, TX_ER and TXD[3:0] signals from the
MAC. The clock frequency is 25MHz in 100BASE-TX mode and
2.5MHz in 10BASE-T mode. This pin is tri-stated in isolate mode.
TRANSMIT ENABLE: TX_EN is asserted by the MAC to indicate that
valid data for transmission is present on the TXD[3:0] pins.
TRANSMIT DATA: TXD[3:0] receives data from the MAC for
transmission on a nibble basis. This data is captured on the rising
edge of TX_CLK when TX_EN is high.
TRANSMIT ERROR: TX_ER is asserted high to request that an error
code-group be transmitted when TX_EN is high. In PCS bypass mode
this pin becomes the higher-order bit of the transmit 5-bit code group.
CARRIER SENSE: When the 78Q2120 is not in repeater mode, CRS
is high whenever a non-idle condition exists on either the transmitter
or the receiver. In repeater mode, CRS is only active when a non-idle
condition exists on the receiver. This pin is tri-stated in isolate mode.
COLLISION: COL is asserted high when a collision has been
detected on the media. In 10BASE-T mode COL is also used for the
SQE test function. This pin is tri-stated in isolate mode.
RECEIVE CLOCK: RX_CLK is acontinuous clock which provides a
timing reference to the MAC for the RX_DV, RX_ER and RXD[3:0]
signals. The clock frequency is 25MHz in 100BASE-TX mode and
2.5MHz in 10BASE-T mode. To reduce power consumption, in
100BASE-TX mode, the 78Q2120 provides an optional mode enabled
through MR16.0 in which RX_CLK is held inactive (low) when no
receive data is detected. This pin is tri-stated in isolate mode.
RECEIVE DATA VALID: RX_DV is asserted high to indicate that valid
data is present on the RXD[3:0] pins. In 100BASE-TX mode, it
transitions high with the first nibble of preamble and is pulled low
when the last data nibble has been received. In 10BASE-T mode it
transitions high when the start-of-frame delimiter (SFD) is detected.
This pin is tri-stated in isolate mode.
RECEIVE DATA: Received data is provided to the MAC via RXD[3:0].
These pins are tri-stated in isolate mode.
RECEIVE ERROR: RX_ER is asserted high when an error is detected
during frame reception. In PCS bypass mode this pin becomes the
higher-order bit of the receive 5-bit code group. This pin is tri-stated in
isolate mode.
TX_EN
28
34
I
TXD[3:0]
32-29
40-37
I
TX_ER
26
32
I
CRS
34
42
OZ
COL
33
41
OZ
RX_CLK
24
30
OZ
RX_DV
23
29
OZ
RXD[3:0]
19-22
23-26
OZ
RX_ER
25
31
OZ
相關(guān)PDF資料
PDF描述
78Q2120-64T 10/100BASE-TX Ethernet Transceiver
78Q2120-CGT 10/100BASE-TX Ethernet Transceiver
78Q8392L Low Power Ethernet Coaxial Transceiver
78Q8392L-28CH Low Power Ethernet Coaxial Transceiver
78Q8392L-CP Low Power Ethernet Coaxial Transceiver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
78Q2120-64T 制造商:未知廠家 制造商全稱:未知廠家 功能描述:10/100BASE-TX Ethernet Transceiver
78Q2120C 制造商:TDK 制造商全稱:TDK Electronics 功能描述:10/100BASE - TX Transceiver
78Q2120C09-64CGT 制造商:TERIDIAN 制造商全稱:TERIDIAN 功能描述:10/100BASE-TX Transceiver
78Q2120C09-64CGT/F 功能描述:以太網(wǎng) IC 10-100 Fast Ethernet 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
78Q2120C09-64CGTR/F 功能描述:TXRX 10/100 BASE 3.3V 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:25 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:16-PDIP 包裝:管件
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*