SC91650A SILAN [Silan Microelectronics Joint-stock], SC91650A Datasheet - Page 15

• Manufacturer Part Number: SC91650A
• Description: 13 MEMORY TONE / PULSE DIALER WITH REDIAL SAVE HANDFREE & HOLD FUNCTION
• Manufacturer: SILAN [Silan Microelectronics Joint-stock]

I Cascade Dialing
Handfree Function operation:
A) To execute Handfree function: When HFO = ’low’, HFI pin is active, the Handfree function will be enabled (HFO
B) Reset Handfree function:
Hold Line Function Operation:
A) To execute Hold Line function: When HFO = ’high’ state or HKS is low, HDI pin is active, the Hold line function
will be enable ( HDO = ”high” ). The XMUTE pin keep to “low”, when HDO stays in “high” state.
B) Reset Hold Line function:
Operating flow
chart of Handfree
= ’high’)
a. OFF-HOOK action.
b. When HFO = ’high’, a HFI pin is active again, the Handfree function will be reset (HFO=’low’).
a. OFF-HOOK action.
b. HFO pin from “low” to: “HIGH level.
c. When HDO pin is from “low” to “high”, the Handfree function will be reset (HFO=”low”).
c. When HDO = ”high”, HDI pin is active, the Hold line function will be disabled (HDO=”low”).
2. One Touch Memory and Memory
3. LNB and Memory
4. SAVE and Memory for SC91652 only
1. Normal Dialing and Memory
Procedure
Procedure
Procedure
Procedure
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Silan
Semiconductors
D1, D2, …… Dn, EM1, EMm … EMn, A, Mn
EMm …… Emn, A, Mn
RD, EM1, EMm …… EMn, A, Mn
SAVE, EM1, EMm …… EMn, A, Mn
HD
HF
ON HKS
HF LINE
HF
ON HKS
HF LINE
HD
(1)
(5)
OFF
15
HF
OFF
ON
OFF HKS
ON HKS
HF LINE
INITIAL
(0)
(3)
HD
OFF
HD
HF
ON
ON
HF
HF
OFF HKS
LINE
OFF HKS
LINE
ON
HD
(2)
(4)
HD
REV: 1.0
2001.01.15