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參數(shù)資料
| 型號： | AD28MSP01KP |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 調(diào)制器/解調(diào)器 |
| 英文描述： | PSTN Signal Port |
| 中文描述： | MODEM-SUPPORT CIRCUIT, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數(shù)： | 13/28頁 |
| 文件大?。?/td> | 368K |
| 代理商： | AD28MSP01KP |
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AD28msp01
REV. A
–13–
V.32 Loopback Mode
In V.32 Loopback Mode, shown in Figure 9, the AD28msp01’s
receive circuitry and transmit circuitry are locked together.
RCONV is generated internally and can be phase adjusted with
the Receive Phase Adjust Register (Control Register 4). RBIT,
RBAUD, TCONV, TBIT and TBAUD are all locked to
RCONV.
RCONV initiates a new DAC sample update and loads Data
Register 2 with a new sample. The RCONV rate can be set to
9.6 kHz, 8.0 kHz or 7.2 kHz by setting the sample rate bit field
in Control Register 0. The bit and baud rates can be set to
any combination of clock rates listed in the control register
descriptions.
Figure 9. Loopback Mode Block Diagram
AD28msp01
A/D
DATA
REGISTER 2
CONTROL
REGISTER 4
RX PHASE ADJUST
ANALOG IN
MCLK
16
16
DSP Processor
D/A
DATA
REGISTER 0
16
ANALOG OUT
TCONV
TBIT
TBAUD
PHASE ADJUST
TX CLOCKS
TX CLOCKS
RX CLOCKS
RCONV
RBIT
RBAUD
PHASE ADJUST
CONVERT
START
V.32ter TSYNC Mode
This mode is identical to V.32 TSYNC Mode except all clocks
are scaled by a factor of 8/7 over the corresponding V.32
TSYNC rate. In this mode, the maximum value to which the re-
ceive and transmit phase adjust registers (Control Registers 4
and 5) may be set is +192.
Both TBIT and RBIT can be set to a 19,200 Hz rate that will
not be scaled by a factor of 8/7, by setting the appropriate fields
in Control Registers 2 and 3.
V.32ter Internal Sync Mode
This mode is identical to V.32 TSYNC Mode except all clocks
are scaled by a factor of 8/7 over the corresponding V.32
TSYNC rate. In this mode, the maximum value to which the
phase adjust registers (Control Registers 4 and 5) may be set is
+192.
Both TBIT and RBIT can be set to a 19,200 Hz rate that will
not be scaled by a factor of 8/7, by setting the appropriate fields
in Control Registers 2 and 3.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD28MSP01KR | PSTN Signal Port |
| AD28MSP02 | RD Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 24V; Output Voltage (Vdc): 15V; Power: 2W; Low Cost 2W Dual Output Converter; Industry Standard SIP7 and DIP14 Packages; Power Sharing on Outputs; Optional Continuous Short Circuit Protected; 1kVDC & 2kVDC Isolation Options; UL94V-0 Package Material; Efficiency to 86% |
| AD28MSP02BN | Voiceband Signal Port |
| AD28MSP02BR | Voiceband Signal Port |
| AD28MSP02KN | Voiceband Signal Port |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD28MSP01KP-REEL | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| AD28MSP01KR | 制造商:AD 制造商全稱:Analog Devices 功能描述:PSTN Signal Port |
| AD28MSP01KST | 制造商:Analog Devices 功能描述: |
| AD28MSP01KST⒂ | 制造商:AD 制造商全稱:Analog Devices 功能描述:PSTN Signal Port |
| AD28MSP02 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Voiceband Signal Port |
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