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參數(shù)資料
| 型號(hào)： | COM20019ILJP |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 微控制器/微處理器 |
| 中文描述： | 1 CHANNEL(S), 312.5K bps, LOCAL AREA NETWORK CONTROLLER, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁(yè)數(shù)： | 65/65頁(yè) |
| 文件大?。?/td> | 386K |
| 代理商： | COM20019ILJP |
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Cost Competitive ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
SMSC COM20019I
Page 9
Rev. 09-25-07
DATASHEET
PLCC PIN
NO.
NAME
SYMBOL
DESCRIPTION
TRANSMISSION MEDIA INTERFACE
19,18
nPulse 2,
nPulse 1
nPULSE2,
nPULSE1
Output (nPULSE1), Input/Output (nPULSE2).
In Normal Mode, these active low signals carry
the transmit data information, encoded in pulse
format, as DIPULSE waveform. When the
device is in Backplane Mode, the nPULSE1
signal driver is programmable (push/pull or
open-drain), while the nPULSE2 signal
provides a clock with frequency of double the
data rate. nPULSE1 is connected to a weak
internal pull-up resistor on the open/drain
driver in backplane mode. The COM20019I
does not support the Normal Mode. Use only
in the Backplane Mode.
20
Receive In
RXIN
Input. This signal carries the receive data
information from the line transceiver.
21
nTransmit
nEnable
nTXEN
Output. This signal is used prior to the Power-
up to enable the line drivers for transmission.
The polarity of the signal is programmable
through the nPULSE2 pin.
nPULSE2 floating before Power-up: nTXEN
active low (Default option)
nPULSE2 grounded before Power-up: nTXEN
active high (This option is only available in
Backplane Mode)
16,17
Crystal
Oscillator
XTAL1,
XTAL2
An external crystal should be connected to
these pins. Oscillation frequency range is from
10 to 20 MHz. If an external TTL clock is used
instead, it must be connected to XTAL1 with a
390
pull-up resistor, and XTAL2 should be
left floating.
15,28
Power
Supply
VDD
+5 Volt Power Supply pin.
7,14,22
Ground
VSS
Ground pin.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| COM20019I-LJP | 制造商:SMSC 制造商全稱:SMSC 功能描述:Low Cost ARCNET(ANSI 878.1) Controller with 2k X 8 On-Board RAM |
| COM20019ILJP3V | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC ARCNET Contrllr RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| COM20019ILJPTR | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Arcnet (ANSI 878.1) Controllr 2k x 8 Ram RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| COM20019IP | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| COM20020 | 制造商:SMSC 制造商全稱:SMSC 功能描述:COM20020 3.3V ULANC Universal Local Area Network Controller with 2K x 8 On-Board RAM |
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