HT9315 Ver la hoja de datos (PDF) - Holtek Semiconductor
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HT9315 Datasheet PDF : 27 Pages
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Pulse number table
Keypad
Output Pulse Number
Digit Key Normal N
New
Zealand
(10N)
Sweden/
Denmark
(N+1)
1
1
9
2
2
2
8
3
3
3
7
4
4
4
6
5
5
5
5
6
6
6
4
7
7
7
3
8
8
8
2
9
9
9
1
10
0
10
10
1
*/T
P®T
P®T
P®T
#
Ignored
Ignored
Ignored
The keyboard arrangement selection table
RK51
Keypad Form
No
Form A (see keyboard information)
Yes
Form B (see keyboard information)
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
H K S H .O H D O
H
L
X
H
L
X
H
H
X
H
X
L
L
L
X
L
L
X
L
H
L
L
X
X
X
X
L
In p u t
H D I H .I H K S
H
L
An
H
An
H
An
H
L
L
H
L
An
H
An
H
An
H
L
H
L
An
N e x t S ta te
H .O H D 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
HT9315 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
DOUT BCD code
When dialing, the corresponding 4-bit BCD codes are
serially presented on DOUT from MSB to LSB. The data
of DOUT is valid at the falling edge of the CLOCK pin.
The following table lists the BCD codes corresponding
to the keyboard input.
Key-In BCD Code Key-In BCD Code
1
0001
8
1000
2
0010
9
1001
3
0011
0
1010
4
0100
*/T
1101
5
0101
#
1100
6
0110
F
1011
7
0111
P
1110
Rev. 1.20
8
October 1, 2002
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