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| 型号： | TEA5777HL/N2,118 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP32 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-358-1, LQFP-32 |
| 文件页数： | 6/47页 |
| 文件大小： | 219K |
| 代理商： | TEA5777HL/N2,118 |
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TEA5777_1
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
14 of 47
Philips Semiconductors
TEA5777
Low-power AM/FM stereo radio for handheld applications
8.5 RF level information (RSSI)
For processing Receiver Signal Strength Information (RSSI) in both AM and FM modes,
the internal level voltage is analog-to-digital converted with a 4-bit ADC. The level
information can be read by bits LEV[3:0] in the read register. In autonomous search mode,
bits LEV[3:0] still indicate some momentary level information, however the data is
dependent upon the readout timing and can be considered to have no relevance to the
user. The ADC full-scale goes from 0.25 V to 0.95 V. In AM mode, the level information
covers the ADC full-scale. In FM mode, the level information does not fully cover the ADC
full-scale.
8.6 Software programmable ports
Two software programmable ports can be addressed via the bus control. These ports can
be independently switched to multiple functions, knowing:
Outputs: SWPORT1 and SWPORT2 can act as output ports which are capable of
sourcing and sinking approximately 9 mA.
Inputs: SWPORT1 and SWPORT2 can act as input ports of which the status can be
read out via bus control.
Remark: Port SWPORT2 can be switched as input for the 13 MHz reference signal. In
that case, no other functions can be programmed for this port.
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相关代理商/技术参数 |
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|---|---|
| TEA5777HL-T | 功能描述:调谐器 AM/FM STEREO RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度: |
| TEA5777HN | 功能描述:调谐器 AM/FM STEREO RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度: |
| TEA5777HN/N2,518 | 功能描述:调谐器 AM/FM STEREO RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度: |
| TEA5777HN/N2,557 | 功能描述:调谐器 AM/FM STEREO RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度: |
| TEA5777HN-T | 功能描述:调谐器 AM/FM STEREO RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度: |
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