Read Sharp AR-P27 (serv.man6) Service Manual online
AR-P27
ELECTRICAL SECTION
10 – 1
[10] ELECTRICAL SECTION
1. BLOCK DIAGRAM
TMPR4937TB
SDRAM0(L)
SDRAM0(H)
32MB
32MB
LC
X
2
44
L
CX
2
4
5
LCH
LC
X
3
7
3
100MHz/64bit
Sy stem BUS
3.3V
Flash SO-DIMM
(Mask ROM)
slot3 32MB
256Kbit
Serial EEPROM
ACE
BUSSPRT
ADDR[19:0]
DATA[63:0]
MEMA[14:5]
M
EM
D[3
1:
0]
LA[20:0]
LD[31:0]
OSC
25MHz
25MHz
SDRAM DIMM
256MB (Max)
M
EM
D
[1
5:0]
M
E
M
D
[3
1
:1
6
]
MEMD[63:0]
4Pin Connector
(RS-232C Connector)
U
A
R
T
C
h
1
33MHz/32bit
PCI BUS
SPD
System
Bus I/F
Bus I/F
1284
Cont
Cont
Image
Cont
Cont
RTC
I/F
I/F
IO I/F
PIO
LCX245
U
A
R
T
C
h
0
(MBUS Connector)
60Pin Connector
USB1.1
ML60852A
ML60852A
USB
Connector
Connector
On Board 32bit
144pin S.O.DIMM 64bit
OSC
12MHz
12MHz
PCIC
EBIF
SDRAMC
EBUSC
UART
Tx49Core
IRC
G
-B
u
s
Bridge
IM
-B
u
s
CPUCLK = 300MHz
PIO
LCX244
LVX161284
1284 Connector
ETHER
Connector
Connector
PCI
PCI
Connector
Connector
Ether
MacPHYter II
USBCLK
RESETCLK
slot2 8MB
Flash SO-DIMM
(Option)
Flash SO-DIMM
(Boot,ESC/P)
slot0 4MB or 8MB
slot1 16MB
Flash SO-DIMM
(Code)
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