поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

TLC32044EFN датащи(PDF) 10 Page - Texas Instruments

номер детали TLC32044EFN
подробное описание детали  VOICE-BAND ANALOG INTERFACE CIRCUITS
Download  39 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI - Texas Instruments

TLC32044EFN датащи(HTML) 10 Page - Texas Instruments

Back Button TLC32044EFN Datasheet HTML 6Page - Texas Instruments TLC32044EFN Datasheet HTML 7Page - Texas Instruments TLC32044EFN Datasheet HTML 8Page - Texas Instruments TLC32044EFN Datasheet HTML 9Page - Texas Instruments TLC32044EFN Datasheet HTML 10Page - Texas Instruments TLC32044EFN Datasheet HTML 11Page - Texas Instruments TLC32044EFN Datasheet HTML 12Page - Texas Instruments TLC32044EFN Datasheet HTML 13Page - Texas Instruments TLC32044EFN Datasheet HTML 14Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 39 page
background image
TLC32044C, TLC32044E, TLC32044I, TLC32044M, TLC32045C, TLC32045I
VOICE-BAND ANALOG INTERFACE CIRCUITS
SLAS017F – MARCH 1988 – REVISED MAY 1995
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
explanation of internal timing configuration
All of the internal timing of the AIC is derived from the high-frequency clock signal that drives the master clock
input. The shift clock signal, which strobes the serial port data between the AIC and DSP, is derived by dividing
the master clock input signal frequency by four.
Low-pass:
SCF Clock Frequency (D Aor A D path)
+
Master Clock Frequency
2
Contents of Counter A
Conversion Frequency
+
SCF Clock Frequency (D AorA D path)
Contents of Counter B
High-pass:
SCF Clock Frequency (A D Path)
+ A D Conversion Frequency
Shift Clock Frequency
+
Master Clock Frequency
4
TX counter A and TX counter B, which are driven by the master clock, determine the D/A conversion timing.
Similarly, RX counter A and RX counter B determine the A/D conversion timing. In order for the low-pass
switched-capacitor filter in the D/A path to meet its transfer function specifications, the frequency of its clock
input must be 288 kHz. If the clock frequency is not 288 kHz, the filter transfer function frequencies are
frequency-scaled by the ratios of the clock frequency to 288 kHz. Thus, to obtain the specified filter response,
the combination of master clock frequency and TX counter A and RX counter A values must yield a 288-kHz
switched-capacitor clock signal. This 288-kHz clock signal can then be divided by the TX counter B to establish
the D/A conversion timing.
The transfer function of the bandpass switched-capacitor filter in the A/D path is a composite of its high-pass
and low-pass section transfer functions. The high-frequency roll-off of the low-pass section meets the bandpass
filter transfer function specification when the low-pass section SCF is 288 kHz. Otherwise, the high-frequency
roll-off will be frequency-scaled by the ratio of the high-pass section’s SCF clock to 288 kHz. The low-frequency
roll-off of the high-pass section meets the bandpass filter transfer function specification when the A/D
conversion rate is 8 kHz. Otherwise, the low-frequency roll-off of the high-pass section is frequency-scaled by
the ratio of the A/D conversion rate to 8 kHz.
TX counter A and TX counter B are reloaded every D/A conversion period, while RX counter A and RX counter
B are reloaded every A/D conversion period. The TX counter B and RX counter B are loaded with the values
in the TB and RB registers, respectively. Via software control, the TX counter A can be loaded with either the
TA register, the TA register less the TA’ register, or the TA register plus the TA’ register. By selecting the TA
register less the TA’ register option, the upcoming conversion timing occurs earlier by an amount of time that
equals TA’ times the signal period of the master clock. By selecting the TA register plus the TA’ register option,
the upcoming conversion timing occurs later by an amount of time that equals TA’ times the signal period of the
master clock. The D/A conversion timing can be advanced or retarded. An identical ability to alter the A/D
conversion timing is provided. In this case, however, the RX counter A can be programmed via software control
with the RA register, the RA register less the RA’ register, or the RA register plus the RA’ register.
The ability to advance or retard conversion timing is particularly useful for modem applications. This feature
allows controlled changes in the A/D and D/A conversion timing. This feature can be used to enhance
signal-to-noise performance, to perform frequency-tracking functions, and to generate nonstandard modem
frequencies.


Аналогичный номер детали - TLC32044EFN

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
TLC32044EFN TI1-TLC32044EFN Datasheet
528Kb / 39P
[Old version datasheet]   VOICE-BAND ANALOG INTERFACE CIRCUITS
TLC32044EFN TI1-TLC32044EFN Datasheet
528Kb / 39P
[Old version datasheet]   VOICE-BAND ANALOG INTERFACE CIRCUITS
More results

Аналогичное описание - TLC32044EFN

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
5962-9086302M3A TI1-5962-9086302M3A Datasheet
528Kb / 39P
[Old version datasheet]   VOICE-BAND ANALOG INTERFACE CIRCUITS
TLC32044MJB TI1-TLC32044MJB Datasheet
512Kb / 39P
[Old version datasheet]   VOICE-BAND ANALOG INTERFACE CIRCUITS
TLC32044C TI1-TLC32044C_11 Datasheet
528Kb / 39P
[Old version datasheet]   VOICE-BAND ANALOG INTERFACE CIRCUITS
TLC32046 TI1-TLC32046 Datasheet
273Kb / 56P
[Old version datasheet]   Wide-Band Analog Interface Circuit
TLC32046CFN TI-TLC32046CFN Datasheet
247Kb / 56P
[Old version datasheet]   Wide-Band Analog Interface Circuit
TLC32047C TI-TLC32047C Datasheet
303Kb / 61P
[Old version datasheet]   Wide-Band Analog Interface Circuit
TLC32040C TI-TLC32040C Datasheet
453Kb / 33P
[Old version datasheet]   ANALOG INTERFACE CIRCUITS
TLC32046C TI-TLC32046C Datasheet
297Kb / 57P
[Old version datasheet]   Wide-Band Analog Interface Circuit
logo
CML Microcircuits
FX004 CMLMICRO-FX004 Datasheet
338Kb / 9P
   Voice Band Inverter
MX004 CMLMICRO-MX004 Datasheet
370Kb / 9P
   VOICE BAND INVERTER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com