HT9320 查看數據表（PDF） - Holtek Semiconductor
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HT9320 Datasheet PDF : 29 Pages
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Lock function (HT932L)
This function aims to detect lock dialing numbers to pre-
vent from an unauthorized long distance call. The dialing
output of this chip is disabled if the first input key after
on-off hook is the lock number when the lock function is
enabled.
International direct dialing lock (IDD lock) selection
table
RK51 RK61 RK71
Lock Function
No
No
No
Normal dialing without lock
function
No No Yes To lock 0
No Yes ¾ To lock 0, 9
Yes ¾
IDD lock operation by the tele-
¾ phone keyboard.
(See keyboard operation)
Note: ²¾² stands for ²don¢t care²
Hand-free function operation
· Hand-free function execution
When HFO is low, a rising edge triggers the HFI, en-
abling the Hand-free function (HFO becomes high).
· Reset Hand-free function
When HFO is high, the Hand-free function is enabled
and can be reset by:
¨ Off-hook
¨ Applying a rising edge to HFI
¨ Changing the HDO pin from low to high
· Hand-free function table
C u rre n t S ta te
In p u t
N e x t S ta te
H K S H .O H D O H D I H .I H K S H .O H D O
H
L
X
H
L
An
L
An
H
L
X
H
An
H
L
H
H
X
H
H
X
L
H
L
L
X
H
L
L
X
H
L
H
L
H
L
X
X
H
X
X
L
An
L
An
L
L
L
L
L
An
L
An
An
H
L
An
L
An
L
H
An
An
L
An
L
H
H : L o g ic H IG H
L : L o g ic L O W
X : D o n 't c a r e
A n: U nchanged
: R is in g e d g e
: . a llin g e d g e
HT9320 Series
Hold-line function operation
· Hold-line function execution
When HDO is low, a falling edge triggers the HDI, en-
abling the Hold-line function (HDO becomes high).
The XMUTE remains low when HDO is high.
· Reset Hold-line function
When HDO is high, the Hold-line function is enabled
and can be reset by:
¨ Off-hook
¨ Applying a falling edge to HDI
¨ Changing the HFO pin from low to high
· Hold-line function table
C u rre n t S ta te
H K S H D O H .O
H
L
X
H
L
X
H
H
L
H
X
X
L
L
X
L
L
X
L
H
L
L
X
X
X
X
L
In p u t
H .I H D I H K S
L
H
An
L
An
L
An
L
H
L
L
H
An
L
An
L
An
L
H
H
H
An
N e x t S ta te
H D O H .O
L
An
H
L
L
An
L
L
L
An
H
L
L
An
An
An
L
H
H : L o g ic H IG H
L : L o g ic L O W
X : D o n 't c a r e
A n: U nchanged
: R is in g e d g e
: . a llin g e d g e
Key definition
· 0,1,2,3,4,5,6,7,8,9 keys
These are dialing number input keys for both the pulse
mode and the tone mode operations.
· */T
This key executes the P®T function and wait a TP®T
duration in the pulse mode. On the other hand, the */T
key executes the * function in the tone mode.
· * (HT9320H)
The * key executes the * tone output function in the
tone mode. No response in the pulse mode.
· P®T
The key executes the P®T function in the pulse
mode. No response in the tone mode.
·#
This is a dialing signal key for the tone mode only, no
response in the pulse mode.
Rev. 1.10
11
October 1, 2002
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