参数资料
型号: DS21Q58L+
厂商: Maxim Integrated Products
文件页数: 38/74页
文件大小: 0K
描述: IC TXRX E1 QUAD 3.3V 100LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 90
功能: 收发器
接口: E1
电路数: 4
电源电压: 3.14 V ~ 3.47 V
电流 - 电源: 230mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-LQFP(14x14)
包装: 托盘
包括: AIS 警报检测器和发生器,回送功能,PRBS 发生器 / 检测器,远程检测器和发生器
产品目录页面: 1429 (CN2011-ZH PDF)
DS21Q58 E1 Quad Transceiver
43 of 74
19.
ADDITIONAL (Sa) AND INTERNATIONAL (Si) BIT OPERATION
On the receiver, the RAF and RNAF registers always report the data as it is received in the additional (Sa) and
international (Si) bit locations. The RAF and RNAF registers are updated with the setting of the receive align frame
bit in status register 2 (SR2.6). The host can use the SR2.6 bit to know when to read the RAF and RNAF registers.
It has 250
ms to retrieve the data before it is lost.
On the transmitter, data is sampled from the TAF and TNAF registers with the setting of the transmit align frame bit
in status register 2 (SR2.3). The host can use the SR2.3 bit to know when to update the TAF and TNAF registers. It
has 250
ms to update the data or else the old data is retransmitted. Data in the Si bit position is overwritten if either
the framer is programmed (1) to source the Si bits from the TSER pin, (2) in the CRC4 mode, or if the framer (3)
has automatic E-bit insertion enabled. Data in the Sa bit position is overwritten if any of the TCR.3–TCR.7 bits are
set to 1. Please see the TCR register descriptions for more details.
Register Name:
RAF
Register Description:
Receive Align Frame Register
Register Address:
28 Hex
Bit #
7
6
5
4
3
2
1
0
Name
Si
0
1
0
1
NAME
BIT
FUNCTION
Si
7
International Bit
0
6
Frame Alignment Signal Bit
0
5
Frame Alignment Signal Bit
1
4
Frame Alignment Signal Bit
1
3
Frame Alignment Signal Bit
0
2
Frame Alignment Signal Bit
1
Frame Alignment Signal Bit
1
0
Frame Alignment Signal Bit
Register Name:
RNAF
Register Description:
Receive Nonalign Frame Register
Register Address:
29 Hex
Bit #
7
6
5
4
3
2
1
0
Name
Si
1
A
Sa4
Sa5
Sa6
Sa7
Sa8
NAME
BIT
FUNCTION
Si
7
International Bit
1
6
Frame Nonalignment Signal Bit
A
5
Remote Alarm
Sa4
4
Additional Bit 4
Sa5
3
Additional Bit 5
Sa6
2
Additional Bit 6
Sa7
1
Additional Bit 7
Sa8
0
Additional Bit 8
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