参数资料
型号: DS21FT44N+
厂商: Maxim Integrated Products
文件页数: 49/117页
文件大小: 0K
描述: IC FRAMER 4X4 16CH 300-BGA
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 40
控制器类型: E1 调帧器
接口: 并行/串行
电源电压: 2.97 V ~ 3.63 V
电流 - 电源: 225mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 300-BBGA
供应商设备封装: 300-PBGA(27x27)
包装: 管件
DS21FT44/DS21FF44
37 of 117
CCR1: COMMON CONTROL REGISTER 1 (Address = 14 Hex)
(MSB)
(LSB)
FLB
THDB3
TG802
TCRC4
RSM
RHDB3
RG802
RCRC4
SYMBOL
POSITION
NAME AND DESCRIPTION
FLB
CCR1.7
Framer Loopback
0 = loopback disabled
1 = loopback enabled
THDB3
CCR1.6
Transmit HDB3 Enable
0 = HDB3 disabled
1 = HDB3 enabled
TG802
CCR1.5
Transmit G.802 Enable. See Section 22 for details.
0 = do not force TCHBLK high during bit 1 of timeslot 26
1 = force TCHBLK high during bit 1 of timeslot 26
TCRC4
CCR1.4
Transmit CRC4 Enable
0 = CRC4 disabled
1 = CRC4 enabled
RSM
CCR1.3
Receive Signaling Mode Select
0 = CAS signaling mode
1 = CCS signaling mode
RHDB3
CCR1.2
Receive HDB3 Enable
0 = HDB3 disabled
1 = HDB3 enabled
RG802
CCR1.1
Receive G.802 Enable. See Section 22 for details.
0 = do not force RCHBLK high during bit 1 of timeslot 26
1 = force RCHBLK high during bit 1 of timeslot 26
RCRC4
CCR1.0
Receive CRC4 Enable
0 = CRC4 disabled
1 = CRC4 enabled
FRAMER LOOPBACK
When CCR1.7 is set to a one, the framer will enter a Framer LoopBack (FLB) mode. See Figure 6–1 for
more details. This loopback is useful in testing and debugging applications. In FLB, the framer will loop
data from the transmit side back to the receive side. When FLB is enabled, the following will occur:
1) Data will be transmitted as normal at TPOS and TNEG.
2) Data input by RPOS and RNEG will be ignored.
3) The RCLK output will be replaced with the TCLK input.
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