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TDA7529 数据表(PDF) 31 Page - STMicroelectronics

部件名 TDA7529
功能描述  RF front-end for AM/FM DSP car-radio with IF sampling
PDF  60 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7529 数据表(HTML) 31 Page - STMicroelectronics

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5.1.5
Mode 100: jump
Figure 11.
Jump timing diagram
This mode is used to jump to a different frequency and stay there, with reception at the end
of the sequence.
AFHOLD can be used to tell the back-end to mute/unmute the audio and keep normal
processing on hold.
AFSAMPLE can be used to tell the back-end when the quality signal processing can be
restarted, with a stable situation to start from.
5.2
Mode 100: check
Figure 12.
Check timing diagram
This mode is used to jump to a different frequency and stay there, with audio muted.
AFHOLD can be used to tell the back-end to mute/unmute the audio and keep normal
processing on hold.
AFSAMPLE can be used to tell the back-end when to freeze the quality signal processing.
EVENTS
TIME
transmission with subaddr. bit 7 = 1
wait T1ms
wait for Tplllock
wait T0.5ms
wait 50 us
AFSAMPLE
AFHOLD
B.E. OPERATION
mute audio
hold
unmute audio
bus
STOP
event
regs
swap
AC00048
EVENTS
TIME
transmission with subaddr. bit 7 = 1
wait T1ms
wait for Tplllock
AFSAMPLE
AFHOLD
B.E. OPERATION
mute audio
hold
bus
STOP
event
regs
swap
AC00049



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