Kenwood NX-820G Quick Start Manual page 69

Uhf digital transceiver
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K
TX-RX UNIT (X57-8240-1X)
FSX0
B-BUS
CLKX0
X2/CLKIN
A-BUS
D-BUS
C-BUS
GPSDET
/HINT
GPSDET
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
A[8]
A[9]
A[10]
A[11]
A[12]
A[13]
A[14]
A[15]
A[16]
A[17]
A[18]
A[19]
A[20]
CN504
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
D[8]
D[9]
D[10]
D[11]
D[12]
D[13]
D[14]
D[15]
/WR
/RD
PA
INAMT
CN425
/CS3
/CS2
/CS0
/HRDY
/HDS2
TXD0
RXD0
RTS0
CTS0
TXD1
HOOK_RXD1
TXD2
RXD2
R611
10k
R685
10k
R S T
B-BUS
L
SCHEMATIC DIAGRAM
R555
1k
R556
A4
XTALI
22
B4
NC
XTALo
A10
32I
A12
D
DSPCK
B11
CKo
A11
USRCKI
H18
ADD0
J18
ADD1
K18
ADD2
L18
ADD3
M18
ADD4
N18
ADD5
J17
ADD6
K17
ADD7
M17
ADD8
N17
ADD9
P17
ADD10
K16
ADD11
L16
ADD12
M16
ADD13
P16
ADD14
J15
ADD15
K15
ADD16
M15
ADD17
N15
ADD18
P15
ADD19
J16
ADD20
H15
ADD21
G17
DT0
H16
DT1
G15
DT2
F18
DT3
F17
DT4
G16
DT5
E18
DT6
E17
DT7
F16
DT8
D18
DT9
D17
DT10
B15
DT11
D16
DT12
C15
DT13
D15
DT14
E15
DT15
A15
WRITE
A16
READ
B14
BHE
C14
BLE
A13
CS4
D13
CS3
C13
CS2
B13
CS1
A14
CS0
B12
HRADY
D14
HDS2
R18
TXD0
T18
RXD0
R16
RTS0
R15
CTS0
U15
TXD1
T15
RXD1
V15
TXD2
V14
RXD2
T14
TXD3
R552
4.7k
R553
4.7k
R687
10k
R559
3.9k
R554
3.3k
M
NX-820(G)/820
(MCLK)
3.3V
18.432MHz
IC5 0 6
R5 5 8
4
Q
VSS
3
C542
L 5 0 6
2 2
5
VDD
XT
2
0.01u
6
XTN
INHN
1
D
SM5 0 2 3 CNDH-G
Buffer AMP(Clock)
D
ASIC
I C 5 0 7
C544
0.1u
C545
D
10u
N
D
CN4 2 8
CN509
DGND
CN507
D
D
O
B-BUS
FSX0
CLKX0
B-BUS
69
X57-824 3/10

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