參數(shù)資料
型號(hào): TLC32041I
廠商: Texas Instruments, Inc.
英文描述: ANALOG INTERFACE CIRCUITS
中文描述: 模擬接口電路
文件頁(yè)數(shù): 10/33頁(yè)
文件大?。?/td> 453K
代理商: TLC32041I
TLC32040C, TLC32040I, TLC32041C, TLC32041I
ANALOG INTERFACE CIRCUITS
SLAS014E – SEPTEMBER 1987 – REVISED MAY 1995
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
XTAL
OSC
TMS320
DSP
Divide
by 135
Commercial
External
Front-End
Full-Duplex
Split-Band
Filters
TA Register
(5 bits)
TA’ Register
(6 bits)
(2’s compl)
Adder/
Subtractor
(6 bits)
Divide by 2
TB Register
(6 bits)
[TA = 9 (1)]
[TA = 18 (2)]
(6 bits)
TX Counter A
[TB = 40; 7.2 kHz
[TB = 36; 8.0 kHz
[TB = 30; 9.6 kHz
[TB = 20; 14.4 kHz
[TB = 15; 19.2 kHz
TX Counter B
RA Register
(5 bits)
RA’ Register
(6 bits)
(2’s compl)
Adder/
Subtractor
(6 bits)
Divide by 2
RB Register
(6 bits)
[RA = 9 (1)]
[RA = 18 (2)]
(6 bits)
RX Counter A
[RB = 40; 7.2 kHz
[RB = 36; 8.0 kHz
[RB = 30; 9.6 kHz
[RB = 20; 14.4 kHz
[RB = 15; 19.2 kHz
RX Counter B
Divide by 4
d0, d1 = 0,0
d0, d1 = 1,1
d0, d1 = 0,1
d0, d1 = 1,0
d0, d1 = 0,0
d0, d1 = 1,1
d0, d1 = 0,1
d0, d1 = 1,0
576-kHz
Pulses
576-kHz
Pulses
Low-Pass/
Switched
Capacitor Filter
CLK= 288-kHz
Square Wave
D/A
Conversion
Frequency
A/D
Conversion
Frequency
Band-Pass
Switched
Capacitor Filter
CLK= 288-kHz
Square Wave
SHIFT CLK
1.296 MHz (1)
2.592 MHz (2)
MSTR CLK
5.184 MHz (1)
10.368 MHz (2)
20.736 MHz (1)
41.472 MHz (2)
Optional External Circuitry
for Full-Duplex Modems
153.6 -kHz
Clock (1)
SCF Clock Frequency
Master Clock Frequency
Contents of Counter A
2
Split-band filtering can alternatively be performed after the analog input function via software in the TMS320.
These control bits are described in the AIC DX data word format section.
NOTE A: Frequency 1 (20.736 MHz) is used to show how 153.6 kHz (for commercially available modem split-band filter clock), popular speech
and modem sampling signal frequencies, and an internal 288-kHz switched-capacitor filter clock can be derived synchronously and as
submultiples of the crystal oscillator frequency. Since these derived frequencies sre synchronous submultiples of the crystal frequency,
aliasing does not occur as the sampled analog signal passes between the analog converter and switched-capacitor filter stages.
Frequency 2 (41.472 MHz) is used to show that the AIC can work with high-frequency signals, which are used by high-speed digital
signal processors.
Figure 1. Internal Timing Configuration
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLC32041IN 制造商:TI 制造商全稱:Texas Instruments 功能描述:ANALOG INTERFACE CIRCUITS
TLC32042EFN 制造商:Rochester Electronics LLC 功能描述:
TLC32044 制造商:TI 制造商全稱:Texas Instruments 功能描述:VOICE-BAND ANALOG INTERFACE CIRCUITS
TLC32044 WAF 制造商:Rochester Electronics LLC 功能描述:
TLC32044_3 WAF 制造商:Rochester Electronics LLC 功能描述: