参数资料
型号: DS21Q44T+
厂商: Maxim Integrated Products
文件页数: 28/105页
文件大小: 0K
描述: IC FRAMER ENHANCED E1 4X 128TQFP
标准包装: 72
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: 75mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 128-LQFP
供应商设备封装: 128-LQFP(14x20)
包装: 管件
DS21Q44
29 of 105
SYMBOL
POSITION
NAME AND DESCRIPTION
TUA1
TCR1.4
Transmit Unframed All Ones.
0 = transmit data normally
1 = transmit an unframed all one’s code at TPOS and TNEG
TSiS
TCR1.3
Transmit International Bit Select.
0 = sample Si bits at TSER pin
1 = source Si bits from TAF and TNAF registers (in this mode,
TCR1.6 must be set to 0)
TSA1
TCR1.2
Transmit Signaling All Ones.
0 = normal operation
1 = force timeslot 16 in every frame to all ones
TSM
CR1.1
TSYNC Mode Select.
0 = frame mode (see the timing in Section 18)
1 = CAS and CRC4 multiframe mode (see the timing in Section
18)
TSIO
TCR1.0
TSYNC I/O Select.
0 = TSYNC is an input
1 = TSYNC is an output
Note: See Figure 18–15 for more details about how the Transmit Control Registers affect the operation
of the DS21Q44.
TCR2: TRANSMIT CONTROL REGISTER 2 (Address=13 Hex)
(MSB)
(LSB)
Sa8S
Sa7S
Sa6S
Sa5S
Sa4S
ODM
AEBE
PF
SYMBOL
POSITION
NAME AND DESCRIPTION
Sa8S
TCR2.7
Sa8 Bit Select. Set to one to source the Sa8 bit from the
TLINK pin; set to zero to not source the Sa8 bit. See Section
18 for timing details.
Sa7S
TCR2.6
Sa7 Bit Select. Set to one to source the Sa7 bit from the
TLINK pin; set to zero to not source the Sa7 bit. See Section
18 for timing details.
Sa6S
TCR2.5
Sa6 Bit Select. Set to one to source the Sa6 bit from the
TLINK pin; set to zero to not source the Sa6 bit. See Section
18 for timing details.
Sa5S
TCR2.4
Sa5 Bit Select. Set to one to source the Sa5 bit from the
TLINK pin; set to zero to not source the Sa5 bit. See Section
18 for timing details.
Sa4S
TCR2.3
Sa4 Bit Select. Set to one to source the Sa4 bit from the
TLINK pin; set to zero to not source the Sa4 bit. See Section
18 for timing details.
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