- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382579 > TCM129C14A (Texas Instruments, Inc.) Combined Single-Chip PCM Codec And Filter(單片PCM編碼譯碼器和濾波器) PDF資料下載
參數(shù)資料
| 型號： | TCM129C14A |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | Codec |
| 英文描述： | Combined Single-Chip PCM Codec And Filter(單片PCM編碼譯碼器和濾波器) |
| 中文描述： | 結(jié)合單芯片的PCM編解碼器和過濾器（單片的PCM編碼譯碼器和濾波器） |
| 文件頁數(shù)： | 20/25頁 |
| 文件大小： | 392K |
| 代理商： | TCM129C14A |
TCM29C13A, TCM29C14A, TCM29C16A, TCM29C17A,
TCM129C13A, TC,129C14A, TCM129C16A, TCM129C17A
COMBINED SINGLE-CHIP PCMCODEC AND FILTER
SCTS030E – AUGUST 1989 – REVISED OCTOBER 1996
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
fixed-data-rate timing (see Figure 8)
Fixed-data-rate timing is selected by connecting DCLKR to V
BB
and uses master clocks CLKX and CLKR,
frame-synchronizer clocks FSX and FSR, and the output TSX. FSX and FSR are 8-kHz inputs that set the
sampling frequency and distinguish between signaling and nonsignaling frames by their pulse durations. A
frame synchronization pulse one master-clock period long designates a nonsignaling frame, while a
double-length sync pulse enables the signaling function (TCM12914A and TCM29C14A only). Data is
transmitted on PCM OUT on the first eight positive transitions of CLKX following the rising edge of FSX. Data
is received on PCM IN on the first eight falling edges of CLKR following FSR. A digital-to-analog (D/A)
conversion is performed on received digital word, and the resulting analog sample is held on an internal
sample-and-hold capacitor until transferred to the receive filter.
The clock-selection terminal (CLKSEL) is used to select the frequency of CLKX and CLKR (TCM29C13A,
TCM29C14A, TCM129C13A, and TCM129C14A only). The TCM29C13A, TCM29C14A, TCM129C13A, and
TCM129C14A fixed-data-rate mode can operate with frequencies of 1.536 MHz, 1.544 MHz, or 2.048 MHz. The
TCM29C16A, TCM29C17A, TCM129C16A, and TCM129C17A fixed-data-rate mode operates at 2.048 MHz
only.
1
192/193/256
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
TS1X
Other
Time Slots
TS1X
Transmit Signal Frame
Don’t Care
Don’t Care
Valid
B1B2B3B4B5B6B7B8
B1B2B3B4B5B6
B7B8SIGX
1
192/193/256
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
TS1R
Other
Time Slots
TS1R
Receive Signal Frame
Previous Value
B1B2B3B4B5B6B7B8
B1B2B3B4B5B6B7B8
SIGR
9
192/193/256
New Value
CLKX
FSX
PCM OUT
TSX
SIGX
CLKR
FSR
PCM IN
SIGR
192/193/256
Figure 8. Signaling Timing (Fixed-Data Rate Only)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TCM129C16A | Combined Single-Chip PCM Codec And Filter(單片PCM編碼譯碼器和濾波器) |
| TCM129C16AN | COMBINED SINGLE-CHIP PCM CODEC AND FILTER |
| TCM3105DJE | FSK MODEM |
| TCM3105DNL | FSK MODEM |
| TCM3105 | FSK MODEM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TCM129C14DW | 制造商:TI 制造商全稱:Texas Instruments 功能描述:COMBINED SINGLE-CHIP PCM CODEC AND FILTER |
| TCM129C16 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:COMBINED SINGLE-CHIP PCM CODEC AND FILTER |
| TCM129C16A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:COMBINED SINGLE-CHIP PCM CODEC AND FILTER |
| TCM129C16ADW | 制造商:TI 制造商全稱:Texas Instruments 功能描述:COMBINED SINGLE-CHIP PCM CODEC AND FILTER |
| TCM129C16AN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:COMBINED SINGLE-CHIP PCM CODEC AND FILTER |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。