Onkyo HT-RC270 Service Manual page 8

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3 7 6 3 1 5 1 5 0
A
SCHEMATIC DIAGRAMS - 4
BLOCK DIAGRAM DSP/ETHERNET/USB SECTION
1
2
24.576MHz
T E
L 1 3 9 4 2 2 9 6 5 1 3
SPDIF0
SPDIF1
SPDIFn
SPDIF out
DIR/ADC DR99dB
MIC
from Display block
ADC_LR analog
ADC
3
from ASP block
DR110dB
Analog 10chMax
to ASP block
www
.
4
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TX-NR708/808/1008, TX-NA708/808/1008, HT-RC270, DTR-40.2/50.2, DHC-40.2
B
from HDMI block
NAND Controles
NANDFlash
EMFB_A[1:2]
EMFA_D[0:7]
256Mbit
DIG/NETUSB
512fs
MCK
MCK_Digital
I2S_IN x4/DSD x6
RMCK
I2S_DIR x4
DIRINT1
DIRINT0
DIRRST
DIRCS
SPIO
DACRST
DACCS3
DACCS2
DACCS1
DAC 8ch+2ch block (max10ch)
I2Sx6
x
a o
Val
y
i
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8
C
USB FS
RJ-45
Reserved
+5
SDR SDRAM(x16bit)
EtherMAC
256Mb?? x2pcs
Val
EMIFB
x32DataBus
EMIFA
Reserved
GPIO x2
Q Q
3
7
6
3
AHCLKX1
DualCoreProcessor ARM + DSP
McASP1
DA830
AXR1[n] x6
GPIO x11
24MHz
I2Sx6
2nd DSP
u 1 6 3
Val
17.734MHz
.
Data
Adr
NOR Flash
SDRAM
Val
Val
2
4
9
9
8
D
USB HS
HOST
Reserved
HiSideSw
+5V
+5V
HiSideSw
Level Convert
UART2
UART2
UART1(Reserved)
UART1
I2C0 (Reserved)
1
5
1
5
0
8
9
2
4
I2C0
HOST_REQ
GPIO x2
HOST_CS
SPI1
SPI1
Master??
DIGMUT3
DIGMUT2
GPIO x3
DIGMUT1
NETUSB_SPDIF
Reserved
AXR2[0]
512fs
512fs
AHCLKX0
/AHCLKX2
2ch DAC
McASP0
AMUT0
AXR0[14]
I2S_NETUSB
NET/USB
SerialFlash
SPIO
64Mb or 128Mb?
-May use either Flash momory (NAND flash or Serial flash) for system ROM include boot image.
m
c o
2
9
9
E
RS-232C
for Linux SerialConsole
9
8
2
9
9
NETUSB_LR analog
24.576MHz
512fs
22.5792MHz

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