Rainbow Electronics AT73C246 - Manual (Page 8)

8
11050A–PMAAC–07-Apr-10
AT73C246
5. Application Block Diagram
Figure 5-1. AT73C246 Application Block Diagram
LDO4
3.3V
(CODEC)
VIN
C41
AUDIO
CODEC
DIGITAL
CORE
VIN4
VIN VIN0
SW0
VFB0
GND0
VDD0
BUCK0
1.8V
Max: 600mA
2.2µH
(CORE + MEM)
TWD TWCK
Max: 200mA VDD4
C1
10µF
C42
10µF
10µF
AVDD
VIN VIN1
SW1
VFB1
GND1
VDD1
BUCK1
1.2V
Max: 600mA
2.2µH
C4
22µF
(CORE)
C3
10µF
VDD0 VIN2 LDO2
1V
C6
10µF
C5
2.2µF
Max: 300mA
(CORE)
VDD2
C2
22µF
VIN VIN3
LDO3
3.3V
C8
10µF
C7
10µF
Max: 200mA
(I/O) VDD3
VINSYS
VINSYS
LDO5
2.5V C9
2.2µF
C10
2.2µF
Max: 10mA
(BACKUP)
VBACKUP +
2K
Backup
Battery
LDO6
1.8V / 10mA
C11
2.2µF
(Internal
functions)
VDDC
VMID
C23
1µF
VDD4
MICBIAS
AGND
AUDIO
BIAS
LINR
LINL
MICL
AUDIO IN
+ ADC
3.3µF
100K
100K
3.3µF
C40
1nF
C38
1nF
LINEJACK
AUXR
AUXL 3.3µF
100K
100K
3.3µF
C36
1nF
C34
1nF
AUXJACK
1µF
C32
1nF
MIC_L
2K
HEADSET 32ohms
HPDET
HPL
HPR
HPVCM
AUDIO OUT
+DAC
C21
3.3µF
100K
C22
3.3µF
100K
100
100
100
100
100
LINEOUT
100
MCLK
LRFS
BCLK
DAI
AUDIO
PORT
DAO
I²S
to MCU
XIN
CLK32K
XOUT
WAKEUP0
RTC +
OSC
C20
12p
C19
12p
VBACKUP
PMU
BIAS
REXT
560k
1%
C12
22nF
VBG
GNDSYS
ANA0
ANALOG
INPUTS
C15
22nF
100
ANA_0
ANA1
C16
22nF
100
ANA_1
ANA2
C17
22nF
100
ANA_2
ANA3
C18
22nF
100
ANA_3
10b SAR
ADC
PUSHBUTTON
PMU STATE
MACHINES
RSTB
C13
10nF
4.7K
VDD0/VDD3
ITB
C14
10nF
4.7K
VDD0/VDD3
VPAD
LED
TWI
DCDC
4MHz RC
OSCILLATOR
4.7K
VDD0/VDD3
4.7K
VDD0/VDD3
TWD
TWCK
To MCU TWI
WAKEUP1
WAKEUP2
WAKEUP3
From MCU
PUSHBUTTON
HRST
PUSHBUTTON
PWREN
VBACKUP
DIE TEMP
SENSOR
SYSTEM
32KHz RC
OSCILLATOR
MICLN
1µF
C30
1nF
MICR
1µF
C28
1nF
MIC_R
2K
MICRN
1µF
C26
1nF
DGND
VIN
470
VBACKUP
VBACKUP
100K
2K
2K
100K
100K
100K
100K
100K
L1
L2
R1
BAT1
R2
R3
R4
R5
D1
R6
R7
R11
R10
R9
R8
S1
S2
S3
R12 R13
R14
R15
R18
R19
R22
R23
R24
R25
R27
R26
R28
R29
R31
R30
C25
C27
C29
C31
C33
C35
C37
C39
X1
J1
J2
J3
J4
J5
J6
VDD0/VDD3
57
58
56
59
53
54
52
55
51
50
38
39
1
7
8
10
9
11
20
19
23
24
25
45
2
65
37
36
28
27
30
29
34
31
33
32
18
35
12
17
13
14
16
15
44
43
42
41
40
63
64
49
62
60
61
3
4
5
6
22 21 26 47 48
NC 46