Rainbow Electronics AT73C246 - Manual (Page 3)

3
11050A–PMAAC–07-Apr-10
AT73C246
2. Block Diagram
Figure 2-1. AT73C246 functional block diagram
LDO4
3.3V
(CODEC)
AUDIO
CODEC
DIGITAL
CORE
VIN4
VIN0
SW0
VFB0
GND0
BUCK0
1.8V
Max: 600mA
(CORE + MEM)
TWD TWCK
Max: 200mA VDD4
AVDD
VIN1
SW1
VFB1
GND1
BUCK1
1.2V
Max: 600mA
(CORE)
VIN2 LDO2
1V
Max: 300mA
(CORE) VDD2
VIN3
LDO3
3.3V
Max: 200mA
(I/O) VDD3
VINSYS
LDO5
2.5V
Max: 10mA
(BACKUP)
VBACKUP
LDO6
1.8V / 10mA
VDDC
VMID
MICBIAS
AGND
AUDIO
BIAS
LINR
LINL
MICL AUDIO IN
+ ADC
AUXR
AUXL
HPDET
HPL
HPR
HPVCM
AUDIO OUT
+ DAC
MCLK
LRFS
BCLK
DAI
AUDIO
PORT
DAO
XIN
CLK32K
XOUT
WAKEUP0 RTC +
OSC
PMU
BIAS
REXT
VBG
GNDSYS
ANA0
ANALOG
MUX
ANA1
ANA2
ANA3
10b SAR
ADC
PMU STATE
MACHINES
RSTB
ITB
VPAD
DGND
TWI
DCDC
4MHz RC
OSCILLATOR
WAKEUP1
WAKEUP2
WAKEUP3
HRST
PWREN
VBACKUP
DIE TEMP
SENSOR
SYSTEM
32KHz RC
OSCILLATOR
MICLN
MICR
MICRN
LED
Internal voltages
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
NC
47
NC
48
NC
2
65
45
25
24
23
19
20
11
9
10
8
7
1
39
38
50
51
55
52
54
53
59
56
58
57
NC 46
(Internal
functions)