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參數(shù)資料
| 型號： | TWL1110PBSR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP32 |
| 封裝： | PLASTIC, QFP-32 |
| 文件頁數(shù)： | 17/40頁 |
| 文件大?。?/td> | 564K |
| 代理商： | TWL1110PBSR |
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TWL1110
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLWS103 – NOVEMBER 2000
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
receive operation (continued)
Table 6. Receive-Data Bit Definitions
BIT NO.
COMPANDED
MODE
LINEAR
MODE
1
CD7
LD14
2
CD6
LD13
3
CD5
LD12
4
CD4
LD11
5
CD3
LD10
6
CD2
LD9
7
CD1
LD8
8
CD0
LD7
9
–
LD6
10
–
LD5
11
–
LD4
12
–
LD3
13
–
LD2
14
–
LD1
15
–
LD0
16
–
––
Transmit channel gain control bits always follow the PCM data in time:
CD7-CD0 = data word in companded mode
LD14-LD0 = data word in linear mode
DTMF generator operation and interface
The DTMF circuit generates the summed DTMF tones for push button dialing and provides the PDM output for
the BUZZCON user-alert tone. The integer value is determined by the formula round tone [Freq (Hz)/resolution
(Hz)]. The integer value is loaded into one of two 8-bit registers, high tone register (04) or low tone register (05).
The tone output is 2 dB higher when applied to the high tone register (04). When generating DTMF tones, the
high frequency value must be applied to the high tone register (04) and the low DTMF value to the low tone
register.
The DTMF frequency resolution is controlled by the auxiliary register (06) bits 2, 3, 4, and 5. When the resolution
is set to 7.8125 Hz, the frequency range can be up to 1992.2 Hz. A wider range can be accomplished (for
example, 2x or 4x) by selecting lower resolutions of 15.625 Hz or 31.250 Hz. The gain setting is controlled by
the RXPGA gain control. This register applies the required gain to obtain MUX control during tone mode
operation. Table 3 shows the relationship of the two gain settings.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TWL1110TQFP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:VOICE-BAND AUDIO PROCESSOR VBAPE |
| TWL1200 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SDIO, UART, AND AUDIO VOLTAGE-TRANSLATION TRANSCEIVER |
| TWL1200IPFBRQ1 | 功能描述:轉換 - 電壓電平 SDIO,UART,and Audio Vltg-Level Xcvr RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
| TWL1200-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SDIO, UART, AND AUDIO VOLTAGE-TRANSLATION TRANSCEIVER |
| TWL1200YFFR | 功能描述:轉換 - 電壓電平 SDIO UART & Aud Vltg Level Transceiver RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
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