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参数资料
| 型号： | TEA5766UK/N1,023 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 接收器 |
| 英文描述： | FM, AUDIO SINGLE CHIP RECEIVER, PBGA25 |
| 封装： | 3.30 X 3.25 MM, 0.60 MM HEIGHT, WLCSP-25 |
| 文件页数： | 11/59页 |
| 文件大小： | 273K |
| 代理商： | TEA5766UK/N1,023 |
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TEA5766UK_1
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 01 — 22 March 2007
19 of 59
NXP Semiconductors
TEA5766UK
Stereo FM radio + RDS
If the LSYNCMSK bit is logic 0 and synchronization is lost the TEA5766UK automatically
starts a new synchronization search. It will not generate a hardware interrupt. The host
processor can wait until the RDS decoder is synchronized again; this will be indicated by
the DAVFLG and the SYNC status bit (this requires the DAVMSK being set).
The LSYNCFL is reset by a read of the INTMSK byte 1R.
The LSYNCMSK is not reset by a read of the INTMSK byte; it must be set or reset by the
host processor. Resetting it automatically would change the status of the TEA5766UK and
cause an automatic synchronization search as described above.
How the synchronization is dened is explained in
EN 62106 Specication of the radio
data system (RDS) for VHF/FM sound broadcasting range from 87.5 to 108 MHz, 1998
and in brief in Section 9.
8.2.4 IF frequency: IFFLAG
During automatic frequency search, preset or AF update, the FM part of the TEA5766UK
performs a check on the received IF frequency as a measure of the level of interference in
the channel received. If an incorrect IF frequency is received then this indicates the
presence of strong interferers or tuning to an image and the IFFLAG bit in the INTFLAG
register is set. Also a preset to a channel with no signal will result in a wrong IF count
value and hence setting of the IFFLAG.
When a search, preset or AF update is nished the FRRFLAG will be set to indicate this
and generates an interrupt. The host processor can now read the outcome of the registers
which will contain the IF count value and the IFFLAG status of the channel it is tuned to. In
case of an AF update the IF count value of the alternative frequency will be in the
registers, also when it jumps back because it will then not start a new IF count. Note:
15.6 ms after the tuning algorithm has been completed the IF counter will start a new
count. So 31.25 ms after a failed AF update the IF count result will be equal again to that
of the channel from where the jump was initiated.
15.6 ms after the FRRFLAG has been set the IF counter will start to run continuously on
the tuned frequency and if the conditions for correct frequency are not met then this sets
the IFFLAG bit in the interrupt register. When the IFMSK is set this will also cause an
interrupt.
The IFFLAG bit is cleared by a read of byte 1R, or by starting the tuning algorithm.
8.2.5 RSSI threshold: LEVFLAG
The level voltage reects the eld strength received by the antenna. The level voltage is
analog to digital converted with 4 bits and output via the bus. This 4-bit level value can be
The level ADC (which converts the analog value to digital) can be triggered to convert in
two ways.
During a tuning step, a search, a preset or an AF update the LEVFLAG is triggered by
these algorithms and compares the level with the threshold set by the SSL bits. The
LEVFLAG bit is set if the RSSI level drops below the threshold level set by the SSL bits in
Table 16 The hardware interrupt is only generated if the corresponding mask bit is set.
相关PDF资料 |
PDF描述 |
|---|---|
| TEA5766UK/N1,118 | FM, AUDIO SINGLE CHIP RECEIVER, PBGA25 |
| TEA5766UK/N1/S21,0 | FM, AUDIO SINGLE CHIP RECEIVER, PBGA25 |
| TEA5766UK/N1/S21,1 | FM, AUDIO SINGLE CHIP RECEIVER, PBGA25 |
| TEA5766UK | FM, AUDIO SINGLE CHIP RECEIVER, PBGA25 |
| TEA5777HL/N2,118 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TEA5767 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:single-chip FM stereo radio |
| TEA5767HL | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low-power FM stereo radio for handheld applications |
| TEA5767HN | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low-power FM stereo radio for handheld applications |
| TEA5767HN/V3 | 功能描述:射频收发器 FM RECEIVER RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray |
| TEA5767HN/V3,118 | 功能描述:射频收发器 FM RECEIVER RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray |
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