W925E240 Datasheet, PDF (52/73 Pages) Winbond – 8-BIT CID MICROCONTROLLER

W925E/C240
CIDGD CIDGA
DTMFE
INP2
INN2
GCFB2
INP1
INN1
GCFB1
VREF
CAP
CIDE,RST
VADD
VASS
Input Pre-processor
+
PGAF Anti-alias
<3:0>
Filter
-
PGD
<7:4>
PGD
<3:0>
High Tone
Bandpass
Filter
High Tone
Detector
Low Tone
Bandpass
Filter
PHAD<3:0>
Low Tone
Detector
ESt
Guard
Time
Decode
Timer
data
and Latch
DTMFD
DD3-DD0
Input Pre-processor
+
PGAF Anti-alias
<7:4>
Filter
-
FSKE
FSK Demodulation Circuit
FSK Bandpass
Filter
FSK
Demodulator
PHFL<7:4>
FSK Carrier
Detector
CASE
PHFL<3:0>
FSK
Data Output
Interface
DTMFPT/DTMFAT
FDATA
FD7-FD0
FDR
FCD
To internal
circuit
Bias Voltage
Generator
Clock Driver
High Tone
Bandpass
Filter
Low Tone
Bandpass
Filter
Dual Tone Alert Signal Detection Circuit
High Tone
Detector
PHAD<7:4>
Low Tone
Detector
Guard
Time
Circuit
To internal
circuit
Ring Detector
Interrupt
Generator
ALGO
CASPT/CASAT
RNG
Fm
RNGDI RNGRC
PS: The signals noted in italic and underline type are CID pins on the chip.
Figure 6-14 The CID Block Diagram
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