w925e625 ETC-unknow, w925e625 Datasheet - Page 72

• Manufacturer Part Number: w925e625
• Description: 8-bit Cid Microcontroller
• Manufacturer: ETC-unknow

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. FSK input data rate at 1200 +/- 12 baud.
2. OSCI frequency at 3.579545 MHz +/- 0.1%.
“
testing.
‡
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
Input Sensitivity
Transmission Rate
Input Noise Tolerance
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
” Typical figure are at V
PARAMETER
PARAMETER
DD
= 5V and temperature = 25 ℃ are design aids only, not guaranteed and not subject to production
CONDITION
DCLK, FDR
DATA
DCLK
FSKE
FCD
FDR
FSK Detection Interface
f
f
f
f
SNR
Mark
Space
Mark
Space
SYM.
FSK Detection
TONE
- 72 -
SYM.
f
t
t
DCLK
t
t
t
t
t
t
CRD
FSK
IDD
CP
CA
DR
CH
CL
1280.5
2068.5
1188
2178
1188
MIN.
-43
20
1201.6
1188
MIN.
415
415
415
415
8
1200
1200
2200
1300
2100
TYP
1202.8
TYP
1200
416
416
416
416
1
‡
1319.5
2131.5
MAX.
1212
2222
-5.78
1212
MAX.
1212
1204
417
417
417
417
25
25
5
W925E/C625
UNITS
baud
dBm
dBm
Hz
Db
UNITS
BpS
MS
MS
MS
MS
US
US
US
US
Hz
+/- 1.5 %
+/- 1.5 %
NOTES
+/- 1 %
+/- 1 %
1, 3
1, 2
NOTES
2
1
2
2
2
2