参数资料
型号: DS21FF42
厂商: Maxim Integrated Products
文件页数: 65/114页
文件大小: 0K
描述: IC FRAMER T1 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: T1 调帧器
接口: 并行/串行
电源电压: 2.97 V ~ 3.63 V
电流 - 电源: 300mA
工作温度: 0°C ~ 70°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
DS21FT42/DS21FF42
54 of 114
RDS0M: RECEIVE DS0 MONITOR REGISTER (Address=1F Hex)
(MSB)
(LSB)
B1
B2
B3
B4
B5
B6
B7
B8
SYMBOL
POSITION
NAME AND DESCRIPTION
B1
RDS0M.7
Receive DS0 Channel Bit 1. MSB of the DS0 channel (first
bit to be received).
B2
RDS0M.6
Receive DS0 Channel Bit 2.
B3
RDS0M.5
Receive DS0 Channel Bit 3.
B4
RDS0M.4
Receive DS0 Channel Bit 4.
B5
RDS0M.3
Receive DS0 Channel Bit 5.
B6
RDS0M.2
Receive DS0 Channel Bit 6.
B7
RDS0M.1
Receive DS0 Channel Bit 7.
B8
RDS0M.0
Receive DS0 Channel Bit 8. LSB of the DS0 channel (last
bit to be received).
13.
SIGNALING OPERATION
Each framer in the DS21Q42 contains provisions for both processor based (i.e., software based) signaling
bit access and for hardware based access. Both the processor based access and the hardware based access
can be used simultaneously if necessary. The processor based signaling is covered in Section 14.1 and
the hardware based signaling is covered in Section 14.2.
14.1 PROCESSOR BASED SIGNALING
The robbed–bit signaling bits embedded in the T1 stream can be extracted from the receive stream and
inserted into the transmit stream by each framer. There is a set of 12 registers for the receive side (RS1 to
RS12) and 12 registers on the transmit side (TS1 to TS12). The signaling registers are detailed below.
The CCR1.5 bit is used to control the robbed signaling bits as they appear at RSER. If CCR1.5 is set to
zero, then the robbed signaling bits will appear at the RSER pin in their proper position as they are
received. If CCR1.5 is set to a one, then the robbed signaling bit positions will be forced to a one at
RSER. If hardware based signaling is being used, then CCR1.5 must be set to zero.
RS1 TO RS12: RECEIVE SIGNALING REGISTERS (Address=60 to 6B Hex)
(MSB)
(LSB)
A(8)
A(7)
A(6)
A(5)
A(4)
A(3)
A(2)
A(1)
RS1 (60)
A(16)
A(15)
A(14)
A(13)
A(12)
A(11)
A(10)
A(9)
RS2 (61)
A(24)
A(23)
A(22)
A(21)
A(20)
A(19)
A(18)
A(17)
RS3 (62)
B(8)
B(7)
B(6)
B(5)
B(4)
B(3)
B(2)
B(1)
RS4 (63)
B(16)
B(15)
B(14)
B(13)
B(12)
B(11)
B(10)
B(9)
RS5 (64)
B(24)
B(23)
B(22)
B(21)
B(20)
B(19)
B(18)
B(17)
RS6 (65)
A/C(8)
A/C(7)
A/C(6)
A/C(5)
A/C(4)
A/C(3)
A/C(2)
A/C(1)
RS7 (66)
A/C(16)
A/C(15)
A/C(14)
A/C(13)
A/C(12)
A/C(11)
A/C(10)
A/C(9)
RS8 (67)
A/C(24)
A/C(23)
A/C(22)
A/C(21)
A/C(20)
A/C(19)
A/C(18)
A/C(17)
RS9 (68)
B/D(8)
B/D(7)
B/D(6)
B/D(5)
B/D(4)
B/D(3)
B/D(2)
B/D(1)
RS10 (69)
B/D(16)
B/D(15)
B/D(14)
B/D(13)
B/D(12)
B/D(11)
B/D(10)
B/D(9)
RS11 6A)
B/D(24)
B/D(23)
B/D(22)
B/D(21)
B/D(20)
B/D(19)
B/D(18)
B/D(17)
RS12 6B)
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