參數(shù)資料
型號(hào): TEA5764UK
廠(chǎng)商: NXP SEMICONDUCTORS
元件分類(lèi): 接收器
英文描述: FM radio + RDS
中文描述: FM, AUDIO SINGLE CHIP RECEIVER, PBGA34
封裝: 4 X 4 MM, WLB-34
文件頁(yè)數(shù): 16/64頁(yè)
文件大?。?/td> 287K
代理商: TEA5764UK
TEA5764HN_2
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 9 August 2005
16 of 64
Philips Semiconductors
TEA5764HN
FM radio + RDS
9.
Interrupt handling
9.1 Interrupt register
The first two bytes of the I
2
C-bus register contain the interrupt masks and the interrupt
flags. A flag is set when it is a logic 1.
Fig 5.
Flowchart RDS update
001aab462
activate mute
store 'old' PLL setting
clear LEVFLAG
clear IFFLAG
set PLL to AF frequency
FRRFLAG = 1
BLFLAG = 0
keep mute
(PLL is AF frequency)
FRRFLAG = 1
BLFLAG = 0
not mute
(PLL is old frequency)
wait for PLL to settle
set LEVFLAG
true
false
level OK
wait for IF counter
reset 'old' PLL setting
false
true
IF OK
wait for PLL to settle
start
set IF count time
to 2 ms
Table 6:
Bit
Symbol
INTFLAG - byte0R
7
DAVFLG
6
5
4
3
2
1
0
TESTBIT
LSYNCFLG
IFFLAG
LEVFLAG
PDFLAG
FRRFLAG
BLFLAG
Table 7:
Bit
Symbol
INTMSK - byte0W / byte1R
7
DAVMSK
6
-
5
4
3
2
1
0
LSYNCMSK
IFMSK
LEVMSK
PDMSK
FRRMSK
BLMSK
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