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參數(shù)資料
| 型號： | 73M1903C-IM |
| 廠商： | TERIDIAN SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, QCC32 |
| 封裝： | LEAD FREE, QFN-32 |
| 文件頁數(shù)： | 20/45頁 |
| 文件大?。?/td> | 459K |
| 代理商： | 73M1903C-IM |
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73M1903C
Modem Analog Front End
DATA SHEET
Page: 27 of 45
2005 TERIDIAN Semiconductor Corporation
Rev 3.4
0 = FSBD tristated, for normal operation.
TEST MODES
There are two loop back test modes that affect the configuration of the analog front end. The internal
loop back mode connects the serial bit stream generated by the analog receiver to the input of the analog
transmitter. This loop back mode is similar to a remote analog loop back mode and can be used to
evaluate the operation of the analog circuits. When using this loop back mode, the TXAN/TXAP pins
should not be externally coupled to the RXAP/RXAN pins. Set bit 4 (INTLB) in register 1h (CTRL2) to
enter this loop back mode.
The second loop back test mode is the external loop back mode, or local analog loop back mode. In this
mode, the analog transmitter outputs are fed back into the input of the analog receiver. Set bit 5 (ANALB)
in register 1h (CTRL2) to enter this loop back mode. In this mode, TBS must be kept to below a value
that corresponds to less than 1.16V/2.31V x -6dB = 25% of the full scale code of +/- 32768 at TXD in
order to ensure that the receiver is not overdriven beyond the maximum of 1.16Vpkpk diff for
Rxg=11(0dB) setting.
See Table 14 on page 30 for the maximum allowed transmit levels. Check the
transmitted data against received data via serial interface. This tests the functionality of essentially all
blocks, both digital and analog, of the chip.
There is a third loopback mode that bypasses the analog circuits entirely. Digital loop back forces the
transmitter digital serial bit stream (from DSDM) to be routed into the digital receiver’s sinc
3 filters. Set bit
6 (DIGLB) in register 1h (CTRL2) to enter this loop back mode.
POWER SAVING MODES
The 73M1903C has only one power conservation mode. When the ENFE, bit 7 in register 0h, is zero the
clocks to the filters and the analog are turned off. The transmit pins output a nominal 80k impedance.
The clock to the serial port is running and the GPIO and other registers can be read or updated.
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相關(guān)代理商/技術(shù)參數(shù) |
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| 73M1903C-IM/F | 功能描述:電信線路管理 IC Modem Analog Front End RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1903C-IM/F1 | 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1903C-IMR/F | 功能描述:電信線路管理 IC Modem Analog Front End RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1903C-IMR/F1 | 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1903-EVM-600 | 功能描述:網(wǎng)絡(luò)開發(fā)工具 73M1903 w/Ppu & 600 Ohm Term-Usa & Japan RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
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