4-11. IC Block Diagrams
MICIN
MICVCC
MICLF
VREF
VCC
SPVREF
LOUT
HPGND
ROUT
SPVCC
HPPWR
CVCC
1
2
GND
D-
3
14
13
4
D+
VBUS
5
5
TRON
6
6
TEST
7
4
DACK1
8
3
9
DREQ1
TC1
10
INT1
11
IVDD
12
IC3201 AN12906A (AUDIO BOARD)
33
32
31
30
34
35
MIC VOLTAGE
36
SUPPLY
37
VREF
38
VCC
39
VREFHP
40
41
42
43
44
1
2
3
4
IC8101 M66291GP-2 (MAIN BOARD)
48
46
44
47
45
I/O BLOCK
USB-IP
OSCILLATION
BUFFER
/48MHzPLL
INTERRUPT CONTROLLER
VBUS
INPUT CIRCUIT
TRANSFER
D+ PIN PULLUP
CONTROLLER
CIRCUIT
SERIAL
USB
INTERFACE
TRANSCEIVER
ENGINE
(SIE)
13
14
15
16
17
29
28
27
26
25
24
DET
VREF
AGC
5
6
7
8
9
10
43
42
40
41
39
ENDPOINT
CONTROLLER
FIFO MEMORY CONTROLLER
FIFO MEMORY
20
18
19
21
22
23
23
22
AGCSW
21
LPF1OUT
20
LPF2IN
19
LPF2OUT
18
FEEDBACK
17
RECOUT
16
GND
LPF
15
LIN
14
STBYSW
LPF
13
RIN
12
NC
11
38
37
BUS
INTERFACE
UNIT
(BIU)
24
ICD-S7
36
GND
35
IVDD
34
D11
33
D10
32
D9
31
D8
30
D7
29
D6
D5
28
27
D4
26
D3
25
D2
23