N681622YG Nuvoton Technology Corporation of America, N681622YG Datasheet - Page 52

• Manufacturer Part Number: N681622YG
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of N681622YG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

integrity both oscillators should be enabled simultaneously. Tones can be directed either towards the line or the PCM
interface by programming the RMPC:TRAP[7] bit address (0xC1).
For a desired frequency f
the following equation. The following equations can be used for both Narrowband and Wideband. The resulting
hexadecimal coefficients are register data of OSmCH and OSmCL.
The initial condition for Oscillator m, OSmICL[15:0], can be calculated using the following equation.
equations can be used for both Narrowband and Wideband.
Where A is calculated from the desired peak amplitude, A
The resulting hexadecimal coefficient is input to registers OS2ICH and OS2ICL.
Preliminary Datasheet Rev1.0
Frequency
1209
1336
1477
1633
(Hz)
697
770
852
941
O
1
[ C
15
:
] 0
A
Table 22: DTMF frequency settings (A
PK
=
0.31
0.31
0.31
0.31
0.55
0.55
0.55
0.55
cos
(Volts)
D
the oscillator coefficient for Oscillator m, O1C[15:0] or O2C[17:2], can be calculated with
⎡
⎢
⎢
⎢
⎣
2
*
16
π
OmIC
kHz
f *
D
⎤
⎥
⎥
⎥
⎦
[
*
15
Decimal
2
31548
31281
30951
30556
29144
28361
27409
26258
15
:
] 0
O1C[15:0] or O2C[17:2]
=
A
Page 52 of 164
*
A
sin
=
⎡
⎢
⎢
⎢
⎣
2
16
PK,
*
. 1
π
PK
kHz
f *
in volts in the following equation
A
5779
values for line impedance =600 Ω)
PK
7B3C
6EC9
7A31
78E7
775C
71D8
6B11
D
6692
Hex
Single Programmable Extended Codec/SLCC
⎤
⎥
⎥
⎥
⎦
*
2
15
O
2
[ C
(m: 1 , 2)
17
:
] 0
=
Decimal
cos
1733
1909
2105
2315
2930
3211
3513
3834
⎡
⎢
⎢
⎢
⎣
2
*
OmIC[15:0]
16
π
N681386/87
kHz
f *
D
⎤
⎥
⎥
⎥
⎦
*
2
17
January 2010
The following
06C5
0C8B
0DB9
0EFA
090B
0B72
0775
0839
Hex