NWZ-A726/A726B/A728/A728B/A729
31
• IC Block Diagrams
– MAIN Board –
IC301 XC6401FF58DR
CONTROL
ON / OFF
CONTROL
ON / OFF
REGULATOR 2
REGULATOR 1
REFERENCE
VOLTAGE
1
EN2
2
VIN
3
EN1
6
VOUT2
5
VOUT1
4
VSS
7
GND
CON2
6
VCC
8
NO2 4
NC2
7
CB1 1
GND 3
COM1
10
NC1
9
NO1 2
CB2 5
IC305 MAXTG069
B8
CHANNEL
OSCILLATOR
USB
NC
CPU INTERFACE
CONTROLLER
MULTI
TRANSCELVER
FIRST-IN FIRST-OUT
C8
F3
H2 E3 G4 F4
E1 C5 E2 D3 G1 F1 F2
H4
A1
C6
E8
D6
F8
E7
F7
G8
XWRH
CD0
CA8
CA7
CA6
CA5
CA4
CA3
CA2
XDACK
XDREQ
XINT
XCS
CD15
CD14
CD13
CD12
CD11
CD10
CD9
XI
XO
G3
XRD
TEST
MUX
H1
TESTEN
H8
ATPGEN
A8
BURNIN
MACRO
DEVICE SERIAL
INTERFACE
ENGINE
HOST SERIAL
INTERFACE
ENGINE
A6
R1
A3
DP
A4
DM
B1
VBUSFLG
C1
VBUSEN
C3
VBUS
D1
XRESET
D8
CLKIN
CONTROLLER
FIRST-IN FIRST-OUT
USB
DMA
CONTROLLER
H3
XWRL
VSS
G7 B7 B6 B5 B4 B2
CVDD
D7
LV
D
D
G2
LV
D
D
C7
LV
D
D
A7
LV
D
D
A2
HVDD
C2
HVDD
B3
HVDD
A5
H7
CD8
F6
G6
H6
E6
F5
H5
G5
CD7
CD6
CD5
CD4
CD3
CD2
CD1
C4
CA1
D2
XBEL
VSS
VSS
VSS
VSS
VSS
/ENDPOINT
IC501 S1R72V27B05E10B
OVER CURRENT
THERMAL &
PROTECTION
CONTROL
ON / OFF
REGULATOR
VOLTAGE
B2
VIN
VCONT
GND
A1
REFERENCE
A2
B1
VOUT
OVER CURRENT
THERMAL &
PROTECTION
CONTROL
ON / OFF
REGULATOR
VOLTAGE
1
VIN
2
GND
3
VOUT
VCONT
5
GND
4
NC
REFERENCE
6
IC503, 602 TK63731AB1G0B
IC504 TK63718HCL-G