参数资料
型号: DS2154LNA2+
厂商: Maxim Integrated Products
文件页数: 74/124页
文件大小: 0K
描述: IC TXRX E1 5V 100-LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 90
类型: 收发器
驱动器/接收器数: 1/1
规程: E1
电源电压: 4.75 V ~ 5.25 V
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
DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
53 of 124
8. DS0 MONITORING FUNCTION
Each framer in the DS21354/DS21554 can monitor one DS0 (64kbps) channel in the transmit direction
and one DS0 channel in the receive direction at the same time. In the transmit direction, the user
determines which channel is to be monitored by properly setting the TCM0 to TCM4 bits in the CCR4
register. In the receive direction, the RCM0 to RCM4 bits in the CCR5 register need to be properly set.
The DS0 channel pointed to by the TCM0 to TCM4 bits appears in the transmit DS0 monitor (TDS0M)
register, and the DS0 channel pointed to by the RCM0 to RCM4 bits appears in the receive DS0
(RDS0M) register. The TCM4 to TCM0 and RCM4 to RCM0 bits should be programmed with the
decimal decode of the appropriate E1 channel.
For example, if DS0 channel 6 in the transmit direction and DS0 channel 15 in the receive direction need
to be monitored, then the following values would be programmed into CCR5 and CCR6:
TCM4 = 0
RCM4 = 0
TCM3 = 0
RCM3 = 1
TCM2 = 1
RCM2 = 1
TCM1 = 0
RCM1 = 1
TCM0 = 1
RCM0 = 0
CCR4: COMMON CONTROL REGISTER 4 (Address = A8 Hex)
[Repeated here from Section 5 for convenience.]
(MSB)
(LSB)
RLB
LLB
LIAIS
TCM4
TCM3
TCM2
TCM1
TCM0
SYMBOL
POSITION
NAME AND DESCRIPTION
RLB
CCR4.7
Remote Loopback.
LLB
CCR4.6
Local Loopback.
LIAIS
CCR4.5
Line Interface AIS Generation Enable.
TCM4
CCR4.4
Transmit Channel Monitor Bit 4. MSB of a channel decode that
determines which transmit channel data will appear in the TDS0M
register. See Section 8 for details.
TCM3
CCR4.3
Transmit Channel Monitor Bit 3.
TCM2
CCR4.2
Transmit Channel Monitor Bit 2.
TCM1
CCR4.1
Transmit Channel Monitor Bit 1.
TCM0
CCR4.0
Transmit Channel Monitor Bit 0. LSB of the channel decode.
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