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参数资料
| 型号： | DS21Q43AT |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Digital Transmission Controller |
| 英文描述： | DATACOM, FRAMER, PQFP128 |
| 封装： | TQFP-128 |
| 文件页数： | 6/60页 |
| 文件大小： | 748K |
| 代理商： | DS21Q43AT |
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DS21Q43A
14 of 60
4F
R/W
Transmit Signaling 16.
50
R/W
Transmit Si Bits Align Frame.
51
R/W
Transmit Si Bits Non-Align Frame.
52
R/W
Transmit Remote Alarm Bits.
53
R/W
Transmit Sa4 Bits.
54
R/W
Transmit Sa5 Bits.
55
R/W
Transmit Sa6 Bits.
56
R/W
Transmit Sa7 Bits.
57
R/W
Transmit Sa8 Bits.
58
R
Receive Si Bits Align Frame.
59
R
Receive Si Bits Non-Align Frame.
5A
R
Receive Remote Alarm Bits.
5B
R
Receive Sa4 Bits.
5C
R
Receive Sa5 Bits.
5D
R
Receive Sa6 Bits.
5E
R
Receive Sa7 Bits.
5F
R
Receive Sa8 Bits.
NOTES:
1. The Test Registers 1, 2, and 3 are used only by the factory; these registers must be cleared (set to all
0s) on power-up initialization to insure proper operation.
2. Any register address between 60h and 7Fh or between E0h and FFh will allow the status of the
interrupts to appear on the bus.
3. Register addresses 09h through 0Fh are reserved for future use.
2.0 PARALLEL PORT
The DS21Q43A is controlled via either a non-multiplexed (MUX=0) or multiplexed (MUX=1) bus by an
external microcontroller or microprocessor. The DS21Q43A can operate with either Intel or Motorola bus
timing configurations. If the BTS pin is tied low, Intel timing will be selected; if tied high, Motorola
timing will be selected. All Motorola bus signals are listed in parentheses (). See the timing diagrams in
the AC Electrical Characteristics for more details.
3.0 CONTROL AND TEST REGISTERS
The operation of the DS21Q43A is configured via a set of seven registers. Typically, the control registers
are only accessed when the system is powered up. Once the DS21Q43A has been initialized, the control
registers will only need to be accessed when there is a change in the system configuration. There are two
Receive Control Registers (RCR1 and RCR2), two Transmit Control Registers (TCR1 and TCR2), and
three Common Control Registers (CCR1, CCR2 and CCR3). Each of the seven registers is described in
this section.
The Test Registers at addresses 15, 18, and 19 hex are used by the factory in testing the DS21Q43A. On
power-up, the Test Registers should be set to 00 hex in order for the DS21Q43A to operate properly.
相关PDF资料 |
PDF描述 |
|---|---|
| DS21Q44T | DATACOM, FRAMER, PQFP128 |
| DS21Q44TN | DATACOM, FRAMER, PQFP128 |
| DS21Q48N | DATACOM, PCM TRANSCEIVER, PBGA144 |
| DS21Q48 | DATACOM, PCM TRANSCEIVER, PBGA144 |
| DS21Q552 | DATACOM, PCM TRANSCEIVER, PBGA256 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS21Q43AT+ | 功能描述:网络控制器与处理器 IC Quad E1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS21Q43ATN | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Quad E1 Framer |
| DS21Q43-ATN | 功能描述:网络控制器与处理器 IC Quad E1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS21Q44 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Enhanced QUAD E1 FRAMER |
| DS21Q44T | 功能描述:网络控制器与处理器 IC Enhanced Quad E1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
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