Philips TDA9605H 1999 Apr 14 15, Fig.9 Functional diagram of the envelope output circuit., Fig.10 Timing diagram of the envelope output signal.

1999 Apr 14 15
Philips Semiconductors Product specification
Audio processor with head amplifier for VHS hi-fi TDA9605H
Fig.9 Functional diagram of the envelope output circuit.
handbook, full pagewidth
MGR845
output select
hi-fi
output select
left channel audio:
right channel audio:
hi-fi
EOS • AFM
AF
envelope
FULL-WAVE
RECTIFIER
FULL-WAVE
RECTIFIER
PEAK HOLD
PEAK HOLD
1.3 or 1.4 MHz carrier
RESET
RESET
EOS • AFM
test 10
HF
envelope
SAMPLE-
AND-HOLD
RMHID
RM
HID
ENVOUT
SAMPLE-
AND-HOLD
SAMPLE
SAMPLE
HF LEVEL DETECTOR
1.7 or 1.8 MHz carrier HF LEVEL DETECTOR
SQUARE ROOT
COMPRESSION
SQUARE ROOT
COMPRESSION
td
Fig.10 Timing diagram of the envelope output signal.
handbook, full pagewidth
MGR844
I2C-bus
registers
HID signal
HID period
ENVOUT
level meter
display
EOS = 0 or AFM = 1
EOS = 1 and
AFM = 0
0123
HF envelope
peak right
in period −1peak right
in period 0
peak right
in period +1peak right
in period +2
peak left
in period 0
left (period 0)
right (period 0)
tracking level
indication
peak left
in period 1 peak left
in period 2
peak left
in period +3
left (period 1)
right (period 1)
left (period 2)
right (period 2)