参数资料
型号: 78Q8392LA03-28CH/F
厂商: Maxim Integrated Products
文件页数: 8/14页
文件大小: 0K
描述: TXRX 10BASE 2/5 ETH COAX 28-PLCC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 38
类型: 收发器
驱动器/接收器数: 1/1
规程: 以太网
电源电压: -10V
安装类型: 表面贴装
封装/外壳: 28-LCC(J 形引线)
供应商设备封装: 28-PLCC(11.51x11.51)
包装: 管件
78Q8392L/A03
Low Power Ethernet
Coaxial Transceiver
Page: 3 of 14
2008 Teridian Semiconductor Corporation
Rev 1.3
JABBER FUNCTION
When valid data on the TX± pins is detected, the
jabber timer is started. If there is valid data for more
than 20 ms, a latch is set which disables the
transmitter output and enables the 10 MHz output on
the CD± pins. The latch is reset within 0.5 seconds
after the valid data is removed from the transmitter
input (TX±). This action resets the jabber timer and
disables the 10 MHz signal on the CD± pins. The
TX± inputs must remain inactive during the 0.5
second reset period.
HEARTBEAT FUNCTION
The 10 MHz CD outputs are enabled for about 1 s
at approximately 1.1 s after the end of each
transmission. The heartbeat signal tells the DTE that
the circuit is functioning. This is implemented by
starting the heartbeat timer when the valid data
signal indicates the end of a transmission. This
function is disabled when HBE pin is tied to VEE.
FIGURE 1: 78Q8392L/A03 General System Block Diagram
DATA MEDIA
RECEIVER
INPUT
BUFFER
RXI
CDS
EQUALIZER
SQUELCH
COMPARATOR
LP FILTER
SQUELSH
THRESHOLD
RX+
RX-
TXO
TRANSMIT
OUTPUT DRIVER
PULSE
SHAPING
FILTER
TX+
TX-
TRANSMIT INPUT
BUFFER
BANDGAP
REFERENCE
AND CURRENT
REFERENCE
10 MHz
OSC
RR+
RR-
CD+
CD-
SLICER
TRANSITION
PERIOD
TAMER
NARROW
PULSE
FILTER
RX DATA
VALID
ENABLE
SLICER
TX ON
CONTROL LOGIC
JABBER TIMER
BLANKING TIMER
HEART BEAT TIMER
TX DATA VALID
END TRANSMIT
TX± DISABLE
ENABLE
TX ± < -250 mV
TX ± > -250 mV
COMPARATOR
TX DISABLE
CD ± ON
COLLISION
THRESHOLD
COLLISION
COMPARATOR
BUFFERED TX
TRANSITION
PERIOD
TIMER
TRANSITION
END
TIMER
NARROW
PULSE
FILTER
SIGNAL
PRESET
DETECT
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78Q8392LA03-28CHR/F 功能描述:TXRX 10BASE 2/5 ETH COAX 28-PLCC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器,接收器,收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:25 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:4.5 V ~ 5.5 V 安装类型:通孔 封装/外壳:16-DIP(0.300",7.62mm) 供应商设备封装:16-PDIP 包装:管件
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