参数资料
型号: DS21Q50LN
厂商: Maxim Integrated Products
文件页数: 31/87页
文件大小: 0K
描述: IC TRANSCEIVER E1 QD IND 100LQFP
产品培训模块: Lead (SnPb) Finish for COTS
产品变化通告: Product Discontinuation 20/Feb/2012
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: -40°C ~ 85°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
DS21Q50
37 of 87
Register Name:
SR2
Register Description:
Status Register 2
Register Address:
0B Hex
Bit
7
6
5
4
3
2
1
0
Name
RMF
RAF
TMF
SEC
TAF
LOTC
RCMF
PRBSD
NAME
BIT
FUNCTION
RMF
7
Receive CAS Multiframe. Set every 2ms (regardless if CAS signaling is enabled or not)
on receive multiframe boundaries.
RAF
6
Receive Align Frame. Set every 250s at the beginning of align frames. Used to alert the
host that Si and Sa bits are available in the RAF and RNAF registers.
TMF
5
Transmit Multiframe. Set every 2ms (regardless if CRC4 is enabled) on transmit
multiframe boundaries.
SEC
4
One-Second Timer. Set on increments of one second based on RCLK. If CCR2.7 = 1, this
bit is set every 62.5ms instead of once a second.
TAF
3
Transmit Align Frame. Set every 250s at the beginning of align frames. Used to alert the
host that the TAF and TNAF registers need to be updated.
LOTC
2
Loss-of-Transmit Clock. Set when the TCLK pin has not transitioned for one channel time
(or 3.9ms).
RCMF
1
Receive CRC4 Multiframe. Set on CRC4 multiframe boundaries; continues to be set every
2ms on an arbitrary boundary if CRC4 is disabled.
PRBSD
0
Pseudorandom Bit-Sequence Detect. When receive PRBS is enabled, this bit is set when
the 215 - 1 PRBS pattern is detected at RPOS and RNEG. The PRBS pattern can be
framed, unframed, or in a specific time slot.
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