u3762mb ETC-unknow, u3762mb Datasheet - Page 8

• Manufacturer Part Number: u3762mb
• Description: Universal Telephone Functions Integrated
• Manufacturer: ETC-unknow

U3762MB
8 (23)
Pin
38
39
40
41
42
43
44
Symbol
MODE
Mask
DP
R1
R2
R3
R4
Pulling MODE pin to:
C3
C4
R1
R2
R3
R4
C1
MODE pin pulled to R4: with temporary
DTMF, 87 ms DTMF burst and 87 ms pause
Pulse dialing output. Flash key will cause DP
to be active in either DTMF mode or pulse
mode. In On-hook state is DP = VDD.
Short mute during pulse dialing, active high
Keyboard input
tone mode with 87 ms burst time
and 140 ms pause
tone mode with 87 ms DTMF burst
and 87 ms pause
pulse mode with 20 pps,
Make/Break = 40/60
pulse mode with 20 pps,
Make/Break = 33/66
pulse mode with 10 pps,
Make/Break = 40/60
pulse mode with 10 pps,
Make/Break = 33/66
pulse mode with 10 pps,
Make/Break = 33/66 and temp. DTMF
with 87 ms DTMF burst, 140 ms pause
Preliminary Information
Function
MODE
R2–R4
MASK
DP
R1
Ê
Ê
Ê
Configuration
VDD
VDD
VDD
PD
Ê
Ê
PD
PD
Ê
Ê
Ê
Ê
Ê
VDD
VDD
VDD
VDD
VDD
VDD
Rev. A1, 15-Sep-98
PD
PD