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| 型号： | 73M1906B-IVT/F |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 41/88页 |
| 文件大小： | 0K |
| 描述： | MICRODAA SET FXO OF VOIP 20TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 74 |
| 系列： | * |
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73M1866B/73M1966B Data Sheet
DS_1x66B_001
46
Rev. 1.6
FS
PCLK
DX
MSB
LSB
Figure 21: 16-bit Transmission Example
Similarly, the 16-bit data sample is received most significant bit first, beginning at the bit slot defined by
the RTS and RCS control registers. The reception lasts for 16 consecutive bit slots.
SR selects between 8 kHz and 16 kHz sampling rates. However,
FS remains constant at 8 kHz.
Therefore, in 16 kHz sampling mode, two data samples are transmitted to (or received from) the PCM
highway starting at the bit slot dictated by the time and clock slot registers. In 16 kHz mode, either two or
four adjacent 8-bit time slots are used for two compressed 8-bit data samples or two linear 16-bit data
When switching to 16 kHz sampling rate and if the Call Progress Monitor function is being used, the
Line-Side Device needs to be reconfigured. See Section 7.7.
PCM highway interfaces are designed such that a device can transmit and receive to other devices on the
PCM highway. For example, Codec A will use a time slot assignment for its transmit to the PCM highway
and Codec B will assign its receiver to the same time slot. The time slot assignment is such that if Codec
A wants to transmit its data sample to Codec B, then Codec A transmit time/clock slot value is identical to
the Codec B receive time/clock slot value.
The 73M1x66B uses the DX signal pin to transmit to the PCM highway and the DR signal pin to receive
from the PCM highway. Figure 22 illustrates a typical example.
Codec A
DR
DX
TSC
Codec B
DR
DX
TSC
Codec N
DR
DX
TSC
PCM Highway
To System
Figure 22: Example of PCM Highway Interconnect
Larger systems may use buffers to interconnect multiple segments of the PCM highway (across line cards
for instance). In the 73M1x66B, Control
TSC is used to control the tri-state mode of the transmit side of
the PCM highway as shown in Figure 23.
TSC is asserted (active low) for the duration of the time slot
during which the 73M1x66B is transmitting to the PCM highway.
Codec A
DR
DX
TSC
Codec B
DR
DX
TSC
Codec N
DR
DX
TSC
Receive PCM Highway
Transmit PCM Highway
TSC Tri-State Control
From System
To System
Figure 23: Example of PCM Highway Interconnect for Typical Large Systems
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相关代理商/技术参数 |
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|---|---|
| 73M1906B-IVTR/F | 功能描述:电信线路管理 IC DAA-FXO VOLP System Host Side RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| 73M1906-IVT/F | 制造商:TERIDIAN 功能描述: |
| 73M1912-IM/F | 功能描述:电信线路管理 IC MicroDAA Chip Set Line Side RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| 73M1912-IMR/F | 功能描述:电信线路管理 IC MicroDAA Chip Set Line Side RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| 73M1912-IVT/F | 功能描述:电信线路管理 IC MicroDAA Chip Set Line Side RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
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