W91360 データシートの表示（PDF） - Winbond
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W91360 Datasheet PDF : 14 Pages
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W91360N SERIES
Pin Description, continued
SYMBOL 18-PIN 20-PIN I/O
FUNCTION
DP / C5
11
13 O N-channel open drain dialing pulse output.
Flash key will cause DP to be active in either tone mode or
pulse mode.
The timing diagram for pulse mode is shown in Figure 1(a, b, c).
VDD, VSS 14, 6 16, 6 I Power input pins.
DTMF
12
14 O In pulse mode, this pin remains in low state at all times. In
tone mode, it will output a dual or single tone. Detailed timing
diagram for tone mode is shown in Figure 2(a, b, c).
OUTPUT FREQUENCY
Specified Actual Error %
R1
697
699
+0.28
R2
770
766
-0.52
R3
852
848
-0.47
R4
941
948
+0.74
C1
1209
1216
+0.57
C2
1336
1332
-0.30
C3
1477
1472
-0.34
HFI, HFO
-
10, 11 I, O Handfree control pins. The handfree control state is toggled
by a low pulse on the HFI input pin. The status of the
handfree control state is described in the following table:
CURRENT STATE
Hook SW. HFO
Low
On Hook
High
Off Hook
On Hook
High
Off Hook
Low
Off Hook High
NEXT STATE
Input
HFO Dialing
HFI
High Yes
HFI
Low
No
HFI
Low
Yes
Off Hook Low
Yes
On Hook Low
No
On Hook High Yes
H/P MUTE
5
HFI pin is pulled to VDD by an internal resistor.
Detailed timing diagram is shown in Figure 3.
5 O The H/P MUTE is a conventional inverter output. During
pulse dialing, flash break or hold period, this output is active
high; otherwise, it remains in low state.
Publication Release Date: May 1997
-3-
Revision A2
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