W925EP01 Datasheet, PDF (105/108 Pages) Winbond – 8-BIT CID MICROCONTROLLER

W925EP01/ W925EP01FG
Dual Tone Alert Signal Detection
PARAMETER
CONDITION SYMBOL MIN _TYP^‡ MAX UNITS NOTES
Alert Signal present detect time
Alert Signal absent detect time
ALGR
t_DP
0.5
t_DA
0.1
10
MS
8
MS
"‡" Typical figure are at V_DD = 5V and temperature = 25 ℃ are design aids only, not guaranteed and not subject to production
testing.
FSK Detection Interface
PARAMETER
SYMBOL
MIN
TYP
MAX UNITS
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
Input Sensitivity
-43
dBm
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 ℃.
NOTES
+/- 1 %
+/- 1 %
+/- 1.5 %
+/- 1.5 %
1, 3
1, 2
FSK Detection
PARAMETER
FSK detection enable time
Input FSK to FCD high delay
Input FSK to FCD low delay
Data Ready ACK Time
Rate
Input FSK to DATA delay
Frequency
High Time
Low Time
DCLK to FDR delay
CONDITION
SYMBO
L
MIN
FSKE
FCD
FDR
DATA
DCLK
DCLK, FDR
t_FSK
t_CP
t_CA
t_DR
t_IDD
f_DCLK
t_CH
t_CL
t_CRD
8
415
1188
1201.6
415
415
415
TYP^‡
416
1200
1
1202.8
416
416
416
MAX UNITS NOTES
25
MS
25
MS
MS
417 US
2
1212 BpS 1
5
MS
1204 Hz
2
417 US
2
417 US
2
417 US
2
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Publication Release Date: Apr. 10, 2006
Revision A2