EM91203 Datasheet, PDF (13/19 Pages) ELAN Microelectronics Corp – TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
HKS
KEY IN
KT
SDO
2
Tdb
sT sT b0 b1 ^{b2 b3 b4} b5 spT ^spT
Tbit
0 1 0 1 0 0 00 ⁰ 1
L
M
<Note>L=LSB,M=MSB, sT=START bit time, spT=STOP bit time
Figure 8. SDO operating timing
Hi-impedance
HKS
KEY IN
XMUTE
HFO
PM
SDO
PO
DTMF
HF HF
HF
HF
HF
HF
HF
Figure 9. HF operating timing
Hi-impedance
* This specification are subject to be changed without notice.
10.1.1997 13