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| 型號： | 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 |
| 文件頁數(shù)： | 25/65頁 |
| 文件大小： | 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 31
Rev. 09-25-07
DATASHEET
Table 6.8 - Sub Address Register
BIT
BIT NAME
SYMBOL
DESCRIPTION
7-3
Reserved
These bits are undefined.
2,1,0
Sub Address 2,1,0
SUBAD
2,1,0
These bits determine which register at address 07 may be
accessed. The combinations are as follows:
SUBAD2
SUBAD1
SUBAD0
Register
0
Tentative ID \ (Same
0
1
Node ID
\ as in
0
1
0
Setup 1
/ Config
0
1
Next ID
/ Register)
1
0
Setup 2
1
0
1
Reserved
1
0
Reserved
1
Reserved
SUBAD1 and SUBAD0 are exactly the same as exist in the
Configuration Register. SUBAD2 is cleared automatically by
writing the Configuration Register.
Table 6.9 - Configuration Register
BIT
BIT NAME
SYMBOL
DESCRIPTION
7
Reset
RESET
A software reset of the COM20019I is executed by writing a
logic "1" to this bit. A software reset does not reset the
microcontroller interface mode, nor does it affect the
Configuration Register. The only registers that the software
reset affect are the Status Register, the Next ID Register,
and the Diagnostic Status Register. This bit must be
brought back to logic "0" to release the reset.
6
Command
Chaining Enable
CCHEN
This bit, if high, enables the Command Chaining operation
of the device. Please refer to the Command Chaining
section for further details. A low level on this bit ensures
software compatibility with previous SMSC ARCNET
devices.
5
Transmit Enable
TXEN
When low, this bit disables transmissions by keeping
nPULSE1, nPULSE2 if in non-Backplane Mode, and nTXEN
pin inactive. When high, it enables the above signals to be
activated during transmissions. This bit defaults low upon
reset. This bit is typically enabled once the Node ID is
determined, and never disabled during normal operation.
Please refer to the Improved Diagnostics section for details
on evaluating network activity.
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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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