SC91710A Datasheet, PDF (9/18 Pages) List of Unclassifed Manufacturers – TONE / PULSE SWITCHABLE DIALER WITH HANDFREE FUNCTION

Silan
Semiconductors
SC91710A/B
Operating flow chart of Handfree
HF
ON HKS
HF LINE
(1)
ON HKS
INITIAL
(0)
HF
OFF
ON
OFF
ON
OFF HKS
HF LINE
(3)
HF
OFF HKS
LINE
(2)
HF
Note: ON: ON HKS; OFF: OFF HKS; HF: Pressed HF key
STATE NO.
(0) INITIAL STATE
(1) ON HKS HF LINE
(2) OFF HKS LINE
(3) OFF HKS HF LINE
PO
XMUTE
HFO
F
F
0
* F: Floating
F
F
1
(Hi-impedance)
F
F
0
F
F
1
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0
2001-11-13
9