u3760mb-n ATMEL Corporation, u3760mb-n Datasheet - Page 13

• Manufacturer Part Number: u3760mb-n
• Description: Low-voltage Standard Telephone Circuit
• Manufacturer: ATMEL Corporation

Rev. A1, 31-May-99
Flash (F1 or F2 or F3)
1.
2.
LNB = D1, D2, D3, ..., Dn
LNB = D3, ..., Dn
t
t
t
t
t
KID
KRD
PDP
IDP
TD
OFF HOOK
OFF HOOK
OFF HOOK
The flash key cannot be stored as a digit in memory. The flash key has first priority among the keyboard
functions.
The system will return to the initial state after the flash pause time is finished.
= key active in debounce
= key release debounce
= pre-digit pause
= inter-digit pause
= DTMF output duration
KEY IN
MUTE
MFO
HKS
OSC
KT
DP
,
,
,
F
D1
F
n
n
F
t
KID
,
,
Preliminary Information
t
FB
D2
D1
Figure 7. Flash operation
,
,
LOW
Oscillation
D2
F
n
t
t
t
t
4
ITP
FB
FP
P
t
FP
,
= intertone pause
= flash break time
= flash pause time
= pause time
,
D3
D3
t
TD
, ...,
, ...,
U3760MB-N
Dn
Dn
t
ITP
10631
13 (20)