MB86437 Datasheet, PDF (7/35 Pages) Fujitsu Component Limited. – 3 V Single Power Supply Audio Interface Unit (AIU)

MB86437
(Continued)
Data Address Meaning
A0A 01010 Tone [1] setting
A0B 01011
A0C 01100 Tone [2] setting
A0D 01101
A0E 01110
Tone waveform
setting
(for tones [1]
and [2])
Data Setting
After a Reset
Data Meaning
D4 D3 D2 D1 D0
D4
D3
D2
D1
D0
0 0 0 0 0 Tone 1
na = a7 × 2⁷ + a6 × 2⁶ + … + a1 × 2 + a0
waveform
1: Square
wave _a7
a6
a5
a4
0: Sine wave
X 0 0 1 0X
a3
a2
a1
a0
0 0 0 0 0 Tone 2
nb = b7 × 2⁷ + b6 × 2⁶ + … + b1 × 2 + b0
waveform
1: Square
wave b7
b6
b5
b4
0: Sine wave
X 0 0 1 0X
b3
b2
b1
b0
0 0 X 0 0 Divide ratio Division X
ratio
(TCLK/N) (M)
00 TCLK/1 12 divisions
01 TCLK/1 24 divisions
10 TCLK/2 24 divisions
11 Use prohibited
Tone [1]
control
1:
Generate
0: Stop
Tone [2]
control
1:
Generate
0: Stop
A0F 01111
A10 10000
A11 10001
A12 10010
CODEC
compression
rule
X X X 0 0X
X
X
CODEC companding law
00: µ-LAW
01: Linear
10: A-LAW
11: Use prohibited
PD control and 0 0 0 0 0 CODEC PD TONE PD SGO PD Transmit- SW14
SW14 control for
1: PD
1: PD
1: PD
ter PD 1: TONE
CODEC, TONE,
0: Operate 0: Operate 0: Operate 1: PD
output 0 V
SGO, and
0: Operate 0: Operate
transmission
(TX)
PD control for 0 X 0 0 0 RAUD PD X
RAUD, JEAR,
(SW8a)
TONE, and EAR
1: Indepen-
dent
0: Linked
JEAR PD
(SW7a)
1: Inde-
pendent
0: Linked
TONE PD
(SW9a)
1: Inde-
pendent
0: Linked
EAR PD
(SW6a)
1: Inde-
pendent
0: Linked
Independent: Do not power-down corresponding amplifier in
conjunction with mute.
Linked: Power-down corresponding amplifier in conjunction
with mute.
DOUT/SW1, 13, 0 0 0 1 1 DOUT
SW1 mute SW13
SW9b
SW9c
9b, 9c
1: Fixed at 1: Mute mute
mute
mute
"H"
0: No mute 1: Mute 0: Mute 0: Mute
0: Operate
0: No mute 1: No mute 1: No mute
The tone frequencies are as follows. (fa and fb are the frequencies of tones [1] and [2] respectively.)
(fin = TCLK input frequency (512 kHz recommended when N = 1, M = 12, 1024 kHz recommended when N = 1,
M = 24 → fin/(N × M) = 42.667 kHz), N: Divide ratio (1 or 2), M: Number of divisions (12 or 24))
fa = (fin/(N × M))/(na + 1), fb = (fin/(N × M))/(nb + 1)
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