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參數(shù)資料
| 型號： | AS3502 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:3; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:22; Circular Contact Gender:Pin; Circular Shell Style:Box Mount Receptacle; Insert Arrangement:22-9 RoHS Compliant: No |
| 中文描述： | 13位線性編解碼器特征與模擬前端模塊 |
| 文件頁數(shù)： | 7/29頁 |
| 文件大小： | 364K |
| 代理商： | AS3502 |
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REV. M
Page 7
September 1998
AS3502
T/2
T/2
R0 < T/2
Start Melody
TRO+
TRO-
R0 < T/2
PW = 1
Burst=1
Pulse Width Volume Control
Sequencer
The sequencer controlling the synthesizer is a six
step rotating shift register that is controlled by a
cadence counter. Each location in the two sequence
control registers (SC1, SC2) contains the value of one
out of three different frequencies or the value of a
tone pause that are played in consecutive order. In
DTMF mode the 6-bit shift register is split up into two
3-byte shift registers. In this mode the cadence steps
are interleaved as S1/S4, S2/S5, S3/S6 where the
SC1 register defines the high group tones with an
attenuation of 2.5 dB and where the SC2 register
defines the low group tones.
S6
S5
S4
S3
S1
S2
S6
S5
S4
S3
S1
S2
MUX
Single Tone:
Dual Tone:
SC1
SC2
.
Tone Sequencer
Cadence Generation
The cadence counter determines the sequencer
rotation speed and the on/ off timing characteristics of
the tones and controls both the sequencer shift clock
and the tone synthesizer on/ off time. The tone off
time allows to insert pauses on switching from one
frequency to the other.
Cadence Period (CP) and Cadence On Time (CO)
are programmed with an 8-bit value. The CS bit
defines two time spans with different resolution:
CP: Cadence Period
CO: Cadence On Time
S1
S2
S3
S4
S5
S6
S1
S2
S3
Cadence Counter
Repetition Counter
The repetition counter controls either the duration
(RO) and repetition (RP) of the melody sequence or
the volume for pulse width volume control of the tone
ringer output.
In repetition mode the repetition counter may be
operated in continuous mode where the ringing signal
is turned on and off with the RP and R0 period or in
single shot mode where the ringing signal is active for
the R0 period. only.
Each tone signalling sequence must be started with
this counter:
Repetition Period (RP) and Repetition On Time (RO)
are programmed with an 8-bit value .
S1
S2
S3
S4
S5
S6
S1
S2
S3
S1
RP: Repetition Period
RO: Repetition On Time
Repetition Counter
PCM Serial Interface
The AS3502 5-wire PCM port interfaces directly to
many serial port standards. The PCM data word is
either formated in 16-bit linear format with 13 bit 2`s
complement data justified left where the last three
LSB bits are reserved or formatted according to 8-bit
A-Law format with alternate mark inversion (AMI)
meaning that the even bits are inverted per CCITT
G711 specification.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS3502 EB | 制造商:AMS 功能描述:BOARD EVAL FOR AS3502 |
| AS3502-EB | 制造商:ams 功能描述:AS3501 Evaluation Board |
| AS3502-EQFP | 功能描述:IC HEADPHONE NOISE-CANCEL 32-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| AS3502-EQFP-500 | 功能描述:IC HEADPHONE NOISE-CANCEL 32-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| AS350-MSF | 制造商:Autec Power Systems 功能描述:AC/DC Power Supply Quad-OUT 3.3V/5V/12V/-12V 20A/20A/18A/0.8A 350W |
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