參數(shù)資料
型號(hào)： SAA7708H
廠商： NXP Semiconductors N.V.
元件分類： 數(shù)字信號(hào)處理
英文描述： Car Radio Digital Signal Processor
中文描述： 汽車無(wú)線電數(shù)字信號(hào)處理器
文件頁(yè)數(shù)： 30/60頁(yè)
文件大?。?/td> 281K
代理商： SAA7708H
1998 May 19
30
Philips Semiconductors
Preliminary specification
Car Radio Digital Signal Processor
SAA7708H
10.14.4.3 Timing Characteristicse logic.
The SPDIF specification IEC 958, supports three levels of clock accuracy, being high-accuracy, normal accuracy and
variable or pitch shifter clock mode.
Level 1, high accuracy, tolerance of transmitting sampling frequency shall be within +50x10-6
Level 2, normal accuracy, all receivers should receive a signal of +1000x10-6 of nominal sampling frequency
Level 3, variable pitch shifted clock mode, adeviation of 12.5% of the nominal sampling frequency is possible
Rise and fall times are defined as:
Rise time = 100 x R(r) / (T(l)+T(h))%
Fall time = 100 x R(f) / (T(l)+T(h))%
Rise and fall times should be in the range:
0%-20%when the data bit is a “1”
0%-10%when the data bits are two succeeding
Duty cycle shall be calculated using the equation:
Duty cycle = 100 x T(h) / (T(l)+T(h))%
Duty cycle shall be in the range:
40%-60% when the data bit is a logical “1”
45%-55% when the data bits are two succeeding “0”’s
10.15 RDS decoder (RDS_CLOCK / RDS_DATA pins)
The RDS decoder recovers the additional inaudible RDS information which is transmitted by FM radio broadcasting. The
(buffered) data is provided as output for further processing by a suitable decoder. The operational functions of the
decoder are in accordance with the EBU specification EN 50067.
The RDS decoder has three different functions:
90%
50%
10%
T
(l)
T
(h)
T
(f)
T
(r)
Fig. 13 Rise and fall times
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參數(shù)描述
SAA7709/N107 制造商:PHILIPS-SEMI 功能描述:
SAA7709H/N103 功能描述:音頻 DSP DIGITAL SIGNAL PROCESSOR RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
SAA7709H/N103,518 功能描述:音頻 DSP DIRAC-2 RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
SAA7709H/N103,557 功能描述:音頻 DSP DIGITAL SIGNAL RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
SAA7709H/N103/S420 功能描述:音頻 DSP Car radio Digital Signal Processor RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
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