- 您现在的位置：买卖IC网 > PDF目录18782 > SI4770-A20-GM (Silicon Laboratories Inc)IC RECEIVER AM/FM CE HP PDF资料下载
参数资料
| 型号： | SI4770-A20-GM |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 28/54页 |
| 文件大小： | 0K |
| 描述： | IC RECEIVER AM/FM CE HP |
| 特色产品： | Si477x Pro-Audio, High-Performance AM/FM Receiver and HD Radio Tuner |
| 标准包装： | 490 |
| 频率： | 520kHz ~ 1.71MHz，64MHz ~ 108MHz |
| 调制或协议： | AM，FM，RDS |
| 应用： | 通用 |
| 电流 - 接收： | 140mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 特点： | 配有 RSSI |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
| 配用： | 336-2267-ND - EVAL MODULE AM/FM CE SI4770 336-2269-ND - BOARD EVAL FOR CE AM/FM SI4770 |
| 其它名称： | 336-2268 SI4770-A10-GM SI4770-A10-GM-ND |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页当前第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页
Si4770/77-A20
4.6. Received Signal Qualifiers
A tuned signal's quality can vary with the environmental
conditions, time of day, and geographical location
among many other factors. To adequately manage the
audio output and avoid unpleasant audible effects to the
end-user, the Si4770/77-A20 monitors and provides
indicators of signal quality, allowing the on-chip DSP
and host processor (if required) to perform signal
processing. The Si4770/77-A20 monitors and reports a
set of industry-standard signal quality metrics including
on-channel RSSI, adjacent channel RSSI (100 kHz and
200 kHz), image RSSI, SNR, multi-path interference on
FM signal, ultra-sonic noise, and FM pilot detection. As
with other Si4770/77-A20 features, how these variables
are used to improve audio performance can be left to
the Silicon Labs on-chip algorithms (recommended), or
they can be brought out for host-processor instructions.
4.7. Digital Audio Interface
The digital audio 3-pin interface consists of data serial
lines containing audio data, a bit clock, and a word
frame for left and right channel data. The digital audio
interface operates in slave mode and supports five
different audio data formats:
? I 2 S Audio
4.7.1. Audio Data Formats
In I 2 S format, by default the MSB is captured on the
second rising edge of DCLK following each DFS
transition. The remaining bits of the word are sent in
order, down to the LSB. The left channel is transferred
first when the DFS is low, and the right channel is
transferred when the DFS is high.
In Left-Justified format, by default, the MSB is captured
on the first rising edge of DCLK following each DFS
transition. The remaining bits of the word are sent in
order, down to the LSB. The left channel is transferred
first when the DFS is high, and the right channel is
transferred when the DFS is low.
In Right-Justified format, by default, the LSB is captured
on the last rising edge of DCLK in each valid DFS
interval. The left channel is transferred first when the
DFS is high, and the right channel is transferred when
the DFS is low.
In DSP format, the DFS becomes a pulse with a width of
one DCLK period. The left channel is transferred first,
followed right away by the right channel. There are two
options in transferring the digital audio data in DSP
format; the MSB of the left channel can be transferred
on the first rising edge of DCLK following the DFS pulse
(left-justified DSP format) or on the second rising edge.
?
?
?
?
28
Left-Justified Audio
Right-Justified Audio
DSP Audio
DSP Left-Justified Audio
In all audio formats, depending on the word size, DCLK
frequency, and sample rates, there may be unused
DCLK cycles after the LSB of each word before the next
DFS transition and MSB of the next word. In addition, if
preferred, the user can configure the MSB to be
captured on the falling edge of DCLK via properties.
The number of audio bits can be configured for 8, 16,
20, or 24 bits.
4.7.2. Audio Sample Rates
The device supports a number of industry-standard
sampling rates including 32, 40, 44.1, and 48 kHz.
Rev. 0.9
相关PDF资料 |
PDF描述 |
|---|---|
| 6494 | OSCILLOSCOPE PROBE 150 MHZ X10 |
| ZVN0545GTA | MOSFET N-CH 450V 140MA SOT223 |
| IRF9520NSPBF | MOSFET P-CH 100V 6.8A D2PAK |
| SP150B | PROBE OSCILLOSCOPE 1X/X10 RATIO |
| SI4840-A10-GU | IC AM/FM RX FOR DIGITAL RADIOS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| Si4770-A20-GMR | 功能描述:射频接收器 Cons. Elect. Pro-Aud AM/FM RDS Rx RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| Si4770-A-EVB | 功能描述:射频开发工具 SI4770 EVAL BOARD. 40P 6X6X0.85 RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| Si4770Module-A-EVB | 功能描述:射频开发工具 Hi-Performance CE AM/FM Module RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| SI4774DY | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:N-Channel 30 V (D-S) MOSFET with Schottky Diode |
| Si4774DY-T1-GE3 | 功能描述:MOSFET 30 Volts 16 Amps 5 Watts RoHS:否 制造商:STMicroelectronics 晶体管极性:N-Channel 汲极/源极击穿电压:650 V 闸/源击穿电压:25 V 漏极连续电流:130 A 电阻汲极/源极 RDS（导通）:0.014 Ohms 配置:Single 最大工作温度: 安装风格:Through Hole 封装 / 箱体:Max247 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。