参数资料
| 型号： | SAA7706H/N210,518 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 24/52页 |
| 文件大小： | 0K |
| 描述： | IC CAR RADIO DSP 80-QFP |
| 标准包装： | 500 |
| 类型： | 汽车信号处理器 |
| 接口： | I²C，I²:S，LSB，SPDIF |
| 电压 - 输入/输出： | 3.30V |
| 电压 - 核心： | 3.30V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 80-BQFP |
| 供应商设备封装： | 80-QFP（14x20） |
| 包装： | 带卷 (TR) |
| 其它名称： | 935270285518 SAA7706H/N210-T SAA7706H/N210-T-ND |
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2001 Mar 05
30
Philips Semiconductors
Product specication
Car radio Digital Signal Processor (DSP)
SAA7706H
handbook, full pagewidth
MGU271
D0
D1
D2
D13
D14
D15
RDS_DATA
RDS_CLOCK
tw
tHC
tLC
block ready
start reading data
Tcy
Fig.19 Interface signals RDS decoder and microcontroller (buffer mode).
8.16
DSP reset
Pin DSP_RESET is active LOW and requires an external
pull-up resistor. Between this pin and the VSSD ground a
capacitor should be connected to allow a proper switch-on
of the supply voltage. The capacitor value is such that the
chip is in reset as long as the power supply is not
stabilized. A more or less fixed relationship between the
DSP_RESET (pin) and the POM (pin) time constant is
mandatory.
The voltage on pin POM determines the current flowing in
the DACs. At 0 V on pin POM the DAC currents are zero
and so are the DAC output voltages.
At the VDDA2 voltage the DAC currents are at their nominal
(maximal) value. Long before the DAC outputs get to their
nominal output voltages, the DSP must be in working
mode to reset the output register: therefore the DSP time
constant must be shorter than the POM time constant. For
recommended capacitors see Figs 25 and 26.
The reset has the following function:
All I2C-bus bits are set to their default value
The DSP status registers (DSP1 and DSP2) are reset
The program counter of both DSPs are set to
address 0000H
The two output flags of DSP1 (DSP1_OUT1 and
DSP1_OUT2) are reset to logic 0. All the configurable
flags of DSP2 are reset to logic 0, however the four flags
available at the output of the chip are default configured
as input flags (DSP2_INOUT1, DSP2_INOUT2,
DSP2_INOUT3 and DSP2_INOUT4).
When the level on pin DSP_RESET is at HIGH, the DSP
program (DSP1 and DSP2) starts to run.
8.17
Test mode connections (pins TSCAN, RTCB
and SHTCB)
Pins TSCAN, RTCB and SHTCB are used to put the chip
in test mode and to test the internal connections. Each pin
has an internal pull-down resistor to ground. In the
application these pins can be left open or connected to
ground.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SAA7707H | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Car radio Digital Signal Processor CDSP |
| SAA7708H | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Car Radio Digital Signal Processor |
| SAA7709/N107 | 制造商:PHILIPS-SEMI 功能描述: |
| SAA7709H/N103 | 功能描述:音频 DSP DIGITAL SIGNAL PROCESSOR RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| SAA7709H/N103,518 | 功能描述:音频 DSP DIRAC-2 RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
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