SC91650 查看數據表（PDF） - Silan Microelectronics

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SC91650

13 MEMORY TONE / PULSE DIALER WITH REDIAL SAVE HANDFREE & HOLD FUNCTION

Silan Microelectronics 

Silan

Semiconductors

SC91650/1/2 A/B

I Cascade Dialing

1. Normal Dialing and Memory

Procedure

↑ D1, D2, …… Dn, EM1, EMm … EMn, A, Mn ↓

2. One Touch Memory and Memory

Procedure

↑ EMm …… Emn, A, Mn ↓

3. LNB and Memory

Procedure

↑ RD, EM1, EMm …… EMn, A, Mn ↓

4. SAVE and Memory for SC91652 only

Procedure

↑ SAVE, EM1, EMm …… EMn, A, Mn ↓

Handfree Function operation:

A) To execute Handfree function: When HFO = ’low’, HFI pin is active, the Handfree function will be enabled (HFO

= ’high’)

B) Reset Handfree function:

a. OFF-HOOK action.

b. When HFO = ’high’, a HFI pin is active again, the Handfree function will be reset (HFO=’low’).

c. When HDO pin is from “low” to “high”, the Handfree function will be reset (HFO=”low”).

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:

a. OFF-HOOK action.

b. HFO pin from “low” to: “HIGH level.

c. When HDO = ”high”, HDI pin is active, the Hold line function will be disabled (HDO=”low”).

Operating flow

chart of Handfree

HF

ON HKS

HF LINE

(1)

HF HD

OFF

HD

ON HKS

HF LINE

(5)

HD

ON HKS

INITIAL

(0)

HF

OFF

ON

OFF

OFF HKS

LINE

(2)

HF

ON

OFF HKS

HF LINE

(3)

HF

HD

HF

HD

HD

OFF HKS

LINE

(4)

ON

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

15

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