參數(shù)資料
型號： TEA5764HN
廠商： NXP SEMICONDUCTORS
元件分類： 接收器
英文描述： FM radio + RDS
中文描述： FM, AUDIO SINGLE CHIP RECEIVER, PQCC40
封裝： 6 X 6 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT-618-1, HVQFN-40
文件頁數(shù)： 23/64頁
文件大小： 287K
代理商： TEA5764HN
TEA5764HN_2
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 9 August 2005
23 of 64
Philips Semiconductors
TEA5764HN
FM radio + RDS
9.1.4.8
Band limit flag
The band limit bit BLFLAG is set to logic 1 when the automatic tuning has detected the
end of the tuning band or when the PLL cannot lock on a certain frequency. This bit is
described in
Table 4
and
Table 5
. This bit is cleared by reading byte1R.
9.2 Interrupt output
The interrupt line driver is a MOS transistor with a nominal sink current of 680
μ
A, it is
pulled HIGH by an 18 k
resistor connected to pin VREFDIG. The interrupt line can be
connected to one other similar device with an interrupt output and an 18 k
pull-up
resistor providing a wired OR function. This allows any of the drivers to pull the line LOW
by sinking the current. When a flag is set and not masked it generates an interrupt; see
Figure 8
.
10. RDS data processing
The RDS demodulator and decoder perform the following operations:
Demodulation of the RDS/RDBS data stream from the MPX signal
Symbol decoding
Block and group synchronization
Error detection and correction
Store last and previous data block received with associated ID and error status
Set the DAVFLG when new data is received
Set the SYNC status bit according to the current synchronization state
Set the LSYNCFL flag when synchronization is lost
The RDS decoder can be set to different modes, each meant to look for specific
information.
Read INTMSK clears flag, INTMSK and INTX.
Write INTMSK enables INTX.
When flag is set, the next interrupts are blocked until read / write INTMSK.
(1) Flag is set immediately after the reset, because event is still there.
Fig 8.
Interrupt line behavior
001aab470
V
CCA
flag
INTX
read INTMSK
10 ms
<
10 ms
read clears INTX
(1)
write INTMSK
10 ms
<
10 ms
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TEA5764HN2GE 制造商:STMicroelectronics 功能描述:
TEA5764UK 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:FM radio + RDS
TEA5764UK/N2,027 功能描述:調(diào)諧器 FM RADIO WITH RDS RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度:
TEA5764UK-G 功能描述:調(diào)諧器 FM RADIO WITH RDS RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度:
TEA5766UK/N1,023 功能描述:調(diào)節(jié)器/解調(diào)器 FM RADIO + RDS RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel
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