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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： | 28/60页 |
| 文件大小： | 748K |
| 代理商： | DS21Q43AT |
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DS21Q43A
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6.3 Internal Register Scheme Based on CRC4 Multiframe
On the receive side, there is a set of eight registers (RSiAF, RSiNAF, RRA, RSa4 to RSa8) that report the
SI and Sa bits as they are received. These registers are updated with the setting of the Receive CRC4
Multiframe bit in Status Register 2 (SR2.1). The host can use the SR2.1 bit to know when to read these
registers. The user has 2 ms to retrieve the data before it is lost. The MSB of each register is the first
received. Please see the register descriptions below and the Transmit Data Flow diagram in Section 11 for
more details.
On the transmit side, there is also a set of eight registers (TSiAF, TSiNAF, TRA, TSa4 to TSa8) that via
the Transmit Sa Bit Control Register (TSaCR), can be programmed to insert both Si and Sa data. Data is
sampled from these registers with the setting of the Transmit multiframe bit in Status Register 2 (SR2.5).
The host can use the SR2.5 bit to know when to update these registers. It has 2 ms to update the data or
else the old data will be retransmitted. The MSB of each register is the first bit transmitted. Please see the
register descriptions below and the Transmit Data Flow diagram in Section 11 for more details.
REGISTER
NAME
ADDRESS
(HEX)
FUNCTION
RSiAF
58
The eight Si bits in the align frame.
RSiNAF
59
The eight Si bits in the non-align frame.
RRA
5A
The eight reportings of the receive remote alarm (RA).
RSa4
5B
The eight Sa4 reported in each CRC4 multiframe.
RSa5
5C
The eight Sa5 reported in each CRC4 multiframe.
RSa6
5D
The eight Sa6 reported in each CRC4 multiframe.
RSa7
5E
The eight Sa7 reported in each CRC4 multiframe.
RSa8
5F
The eight Sa8 reported in each CRC4 multiframe.
TSiAF
50
The eight Si bits to be inserted into the align frame.
TSiNAF
51
The eight Si bits to be inserted into the non-align frame.
TTA
52
The eight settings of receive remote alarm (RA).
TSa4
53
The eight Sa4 settings in each CRC4 multiframe.
TSa5
54
The eight Sa5 settings in each CRC4 multiframe.
TSa6
55
The eight Sa6 settings in each CRC4 multiframe.
TSa7
56
The eight Sa7 settings in each CRC4 multiframe.
TSa8
57
The eight Sa8 settings in each CRC4 multiframe.
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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