W925E625 Datasheet, PDF (72/75 Pages) Winbond – 8-bit CID MICROCONTROLLER

W925E/C625
FSK Detection Interface
PARAMETER
SYM.
MIN.
TYP MAX. UNITS NOTES
Input Frequency Detection
Bell 202 Mark (logic 1)
Bell 202 Space (logic 0)
ITU-T V.23 Mark (logic 1)
ITU-T V.23 Space (logic 0)
Maximum Input Signal Level
f_Mark
f_Space
f_Mark
f_Space
1188
2178
1280.5
2068.5
1200
2200
1300
2100
1212
2222
1319.5
2131.5
-5.78
Hz
dBm
+/- 1 %
+/- 1 %
+/- 1.5 %
+/- 1.5 %
Input Sensitivity
-43
dBm
1, 3
Transmission Rate
1188 1200 1212 baud
Input Noise Tolerance
SNR_TONE
20
Db
Notes:
1. Both mark and space have the same amplitude. Both mark and space are at the nominal frequencies.
2. Band limited random noise 300 – 3400 Hz. Present only when FSK signal is present.
3. These characteristics are at VDD = 5V and temperature = 25 ℃.
1, 2
FSK Detection
PARAMETER
CONDITION SYM. MIN. TYP^‡ MAX. UNITS NOTES
FSK detection enable time
FSKE
t_FSK
25
MS
Input FSK to FCD high delay
Input FSK to FCD low delay
FCD
t_CP
t_CA
8
25
MS
MS
Data Ready ACK Time
FDR
t_DR
415
416
417 US
2
Rate
Input FSK to DATA delay
DATA
1188 1200 1212 BpS
1
t_IDD
1
5
MS
Frequency
f_DCLK 1201.6 1202.8 1204 Hz
2
HIGH TIME
DCLK
t_CH
415
416
417 US
2
Low Time
t_CL
415
416
417 US
2
DCLK to FDR delay
DCLK, FDR t_CRD 415
416
417 US
2
Notes:
1. FSK input data rate at 1200 +/- 12 baud.
2. OSCI frequency at 3.579545 MHz +/- 0.1%.
“‡” Typical figure are at V_DD = 5V and temperature = 25 ℃ are design aids only, not guaranteed and not subject to production
testing.
- 72 -