W91550 WINBOND [Winbond], W91550 Datasheet - Page 28

• Manufacturer Part Number: W91550
• Description: 13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTION
• Manufacturer: WINBOND [Winbond]

Timing Waveforms, continued
Note: The HOLD KEY cannot be enabled when the chip is disabled.
HPM MUTE
T/P MUTE
KMUTE
KEY IN
OSC.
HKS
CHIP ENBLE
DP
HOLD KEY
HPM MUTE
T/P MUTE
HKS
HFO
HFI
M
4
B
T
OFF HOOK
KID
T
PDP
2
Figure 10(a). Hold Timing Diagram
Figure 9. Mute Timing Diagram
T
IDP
MUTE
T
KID
M
- 28 -
B
OSCILLATION
2
T
IDP
High
Low
ON HOOK
M
B
W91550DN SERIES
MUTE
T
IDP
T
KID