Pioneer PRO-110FD Service Manual page 18

1
2.3 HNM BLOCK DIAGRAM
A
AWV2497- (HNM Ass'y) Block Diagram
Classification of each component
IC xxxx
IC, memory, regulator and so on
CN (JA) xxxx Connector to outside of the ass'y
B
xx MHz
X'tal or oscillator
X'tal
USB block
C
Connector to Main Ass'y
CN7851
D
I/O block
+5V for Power supply
CN7901
E
Power supply block
F
18
1
2
Differential signal
Host controll signal
Power supply
to USB Receptacle Connector
CN7801
IC7803
L7801
+5V
R5523N001B
ATH1160-
[USB High-side
[C. mode filter]
Switch]
USB Differencial
signal
24MHz
X'tal
IC7801
VT6212L-G
[USB Controller]
Reset
IC7857
TC74LCX125
[3-state Buffer]
Tx / Rx
IC7852
Reset
TC74LCX04
[Inverter
(as Buffer)]
+5.0V +3.3V +2.5V
IC7903 IC7902
LTC3412EFE NJM2846DL3-25
[SW Reg. IC]
[Regulator IC]
PRO-110FD
2
3
Bus signal
Other digital signal
PCI clock
RJ-45 Ethernet Connector
block
JA7752
AKP1307-
X7851
ASS1216-
[33MHz OSC]
Rx Tx
PCI clock
IC7855
TC74LCX04
[Inverter
(as Buffer)]
IC7754
RTL8100CL-LF
[Ethernet Controller]
Reset
PCI bus
HY5DU561622ETPJ
8620 block
[DDR-SDRAM (256Mbit)]
IC7601
EM8620L-LFC
[Digital Media Processor]
Peripheral bus
27MHz
X'tal
Reset
[Flash Memory (128Mbit)]
Reset
+1.2V
IC7904
LTC3412EFE
[SW Reg. IC]
3
4
Ethernet block
IC7751 IC7753
TC74LCX125 BR93L46RFJ-W
[3-state Buffer] [EEPROM (1kbit)]
25MHz
X'tal
IC7702
IC7701
HY5DU561622ETPJ
[DDR-SDRAM (256Mbit)]
Memory bus
IC7703
AGC1063-A-PI
(S29GL128N90TFIR2)
DDR block
4