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3. TECHNICAL BRIEF
2V55_VAN
C106
47n
B2
TDI
B1
IDO
C2
TMS
C1
TCK
J4
RXON
K4
TXON
J2
MCLK
K2
MCLKEN
K1
RESET
J3
ARSM
K3
ATSM
J1
ASDO
H1
ASDI
H2
ASFS
G2
BSDI
F2
BSIFS
F1
BSDO
D1
BSOFS
E1
BSDO
D2
BSDI
BSFS
B4
IDACOUT
A3
IDACET
1V8_VCORE
2V8_VMEM
1V8_VCORE
R104
100K
C107
C123
47n
47p
F9
ITXP
E9
ITXN
C9
QTXN
D9
QTXP
E1
IRXP
D1
IRXN
C1
QRXP
B1
QRXN
A1
AFCDAC
H9
REF CAP
A8
RAMPDAC
U101
A7
REF OUT
AD6521
A6
AUXADC1
A5
AUXADC2
B5
AUXADC3
A4
AUXADC4
H1
VINAUXP
G1
VINAUXN
J1
VINNORP
K1
VINNORN
J6
BUZZER
K8
VOUTNORP
K7
VOUTNORN
K9
VOUTAUXP
K6
VOUTAUXN
AUXADC4
Figure 3-11 Circuit Diagram of AD6521
TXIP
TXIN
TXQN
TXQP
TXIP
RXIN
RXQP
RXQN
BOARD_TEMP
TP119
C108
C109
C110
AUXADC4
39p
0.1u
10p
C115
39p
C116
C117
C118
C119
39p
39p
39p
39p
C120
VBAT
39p
( 1% )
R112 ( 1% )
100
C121
C122
0.01u
0.01u
- 24 -
2V8_VMEM
AFC
TX...RAMP
R108
1K
C111
C113
C112
39P
1u
39p
(1608)
CLOSE TO AD6521
$V
0.1u
C150
CLOSE TO AD6521
RCVP
RCVN
HEADSET_SPK_P
( 1% )
TEMPSENSE
AUXIP
AUXIN
VINNORP
VINNORN
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