MB86437 Datasheet, PDF (5/35 Pages) Fujitsu Component Limited. – 3 V Single Power Supply Audio Interface Unit (AIU)

MB86437
s BLOCK DIAGRAM
SGC (24) BTPO (31) BTPI (30) BBO (29)
STA (28) VS 1 (8) VS 2 (23) VS 3 (48) VS 4 (25)
SGI
(26)
SGO
(27)
DOUT
(34)
SYNC
(35)
CLK
(36)
DIN
(33)
TCLK
(37)
MDI
(13)
TBO
(10)
TBI
(11)
SRD
(39)
SRC
(40)
STB
(41)
VREF
AMP5
generator
AO _SGC
SGC
VREF generator block
SW1
0 dB (RST)
EV0
(Invert)
0 dB
SW3
Microphone amp (1)
4bit AMP1
SGC
A/D
BPF
–7 to 8 dB
1 dB step
SW4
AMP2
SGC
Codec block
PLL
512 K 0 dB (RST)
Transmitting block
Microphone amp (2)
SGC
SW5
EV1 _{0 dB SW13}
D/A
LPF
4bit _{–7 to 8 dB}
1 dB step
0 dB (RST)
–
+
AMP3
EV2
(Invert)
3bit
SW10
SW11
SINGLE: –14 dBv ^{Tone generator}
DUAL: –14 dBv block
–15 dB 15 dB
DUAL
(RST) (RST)
TONE
EV4
EV3
+
(Invert)
3bit
4bit
ATT
SW16
–30 to 0 dB 8 to 23 dB
–15 dB 5 dB step 1 dB step
–14 dB
(RST)
EV5
3bit ^{0 dB SW 2}
–18 to –11dB
1 dB step
SGC _{–15 to 15 dB, 5 dB step}
SW12
0 dB SW8b _–
+ _PD
SGC _SW8a
–8 dB (RST)–14 _{to 0 dB}
EV6 2 dB step
3bit _{0 dB SW6b}
–
+ _PD
SGC
SW6a
0 dB
MICO
(18)
MIC
(19)
XMIC
(20)
JMICO
(22)
JMIC
(21)
TAUD
(17)
EXSD
(16)
DSCK
(15)
PTBO
(12)
SWI
(1)
SWO
(2)
RAUD
(3)
EAR
(6)
SGC
–
+
AMP4
Receiving
block
AO
SW15
PD
Receiver speaker drive block ^–
+
–3 dB (RST)
SGC
–9 to 0 dB
EV7 3 dB step
2bit
0 dB SW7b
SGC
Earphone speaker drive block
–
+ _PD
SW7a
XEAR
(7)
JEAR
(5)
CONTROL
LOGIC
Control
block
P-
SAVE
10 dB (RST)
0 dB, 10 dB
6 dB (RST)
0 dB, 6 dB
EV8
1bit _{0 dB SW9b}
EV9
1bit _{0 dB SW9c}
–
+ _PD
SGC SW9a
Tone speaker drive block
SW14
TONE
(9)
XPRSTLO0 LO1 LO2 LO3 PS ₍₄₇₎ VD1 ₍₄₎ VD2 (14) VD3 (32) _{VD4 (38)}
(42) (43) (44) (45) (46)
: Digital input
: Digital output
: Analog input
: Analog output
Electronic volume:
• (RST) indicates the value for reset
• (inverting) indicates the inverted phase
between input and output.
: Input/output
: VDD
: GND
5