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2V55_VAN
1V8_VCORE
R101
C107
100K
C108
C180
10u
47n
B2
TDI
B1
TDO
C2
TMS
C1
TCK
J4
RXON
K4
TXON
J2
MCLK
K2
MCLKEN
K1
RESET
J3
ARSM
U102
K3
ATSM
J1
ASDO
AD6521
H1
ASDI
H2
ASFS
G2
BSDI
F2
BSIFS
F1
BSDO
E2
BSOFS
D1
VSDO
E1
VSDI
D2
VSFS
B4
IDACOUT
A3
IDACREF
2V8_VMEM
47n
F9
ITXP
E9
ITXN
C9
QTXN
D9
QTXP
E10
IRXP
D10
IRXN
C10
QRXP
B10
QRXN
A10
AFCDAC
H9
RAMPDAC
A8
REFCAP
A7
REFOUT
A6
AUXADC1
A5
AUXADC2
B5
AUXADC3
BOARD_TEMP
A4
AUXADC4
MON_VBAT
H10
VINAUXP
G10
VINAUXN
J10
VINNORP
K10
VINNORN
C122
39p
J6
BUZZER
K8
VOUTNORP
K7
VOUTNORN
K9
VOUTAUXP
K6
VOUTAUXN
C129
39p
Figure 3-11 Circuit Diagram of AD6521.
TXIP
TXIN
TXQN
TXQP
RXIP
RXIN
RXQP
RXQN
AFC
TX_RAMP
C112
C113
C114
C115
39p
0.1u
10p
39p
R109
C120
100
39p
R111
C121
C123
C124
C125
100
39p
39p
39p
CLOSE TO AD6521
REC_P
REC_N
HEADSET_SPK_P
C126
C130
39p
0.1u
- 25 -
3. TECHNICAL BRIEF
2V8_VMEM
R103
120K
COMPASS_OUT
R105
1K
BAT_TEMP
R106
C111
C116
82K
39p
1u
(1608)
CLOSE TO AD6521
HEADSET_MIC_P
HEADSET_MIC_N
MIC_P
0.1u
MIC_N
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