Preliminary W91510DN SERIES

Publication Release Date: May 1997

- 21 -

Revision A2

Timing Waveforms, continued

T/P MUTE

HFI

HKS

OFF HOOK

HFO

High

H/P MUTE

CHIP ENBLE

HOLD KEY

Figure 8(b). Hold and Handfree Timing Diagram

Note: The HFI and

signal will go high and previous activate inputs will be ignored.

T/P MUTE

HFI

HKS

ON HOOK

HFO

High

H/P MUTE

CHIP ENBLE

HOLD1 KEY

Figure 8(c). Hold and Handfree Timing Diagram

Note: Changing the state of the HKS signal from high to low will initialize the HFO and H/P MUTE signals.