Sharp AR-M236 (serv.man4) Service Manual ▷ View online
AR-M236/M276/M237/M277 CIRCUIT DIAGRAM (LOW VOLTAGE PWB) 3 - 68
3/3
6
7
8
9
10
11
12
6
7
8
9
10
11
12
A
B
H
G
F
E
D
C
AR-M236/M276/M237/M277 PCL PWB (AR-P17) 4 - 1
[4] PCL PWB (AR-P17)
1. Block diagram
TMPR4927TB
PCIC
EBIF
SDRAM0(L)
SDRAM0(H)
32MB
32MB
SDRAMC
EBUSC
LCX244
LCX245
LCH
LCX373
100MHz/64bit
System BUS
3.3V
Flash SO-DIMM (Mask ROM)
Flash SO-DIMM
slot2 32MB
slot1 8MB
Flash SO-DIMM
(Boot,Code,ESC/P)
256Kbit
Serial EEPROM
ACE
BUSSPRT
UART
Tx49Core
IRC
G-Bus
Bridge
IM-Bus
ADDR[19:0]
DATA[63:0]
MEMA[14:5]
MEMD[31:0]
LA[20:0]
LD[31:0]
CPUCLK = 200MHz
OSC
25MHz
SDRAM DIMM
256MB (Max)
MEMD[15:0]
MEMD[31:16]
MEMD[63:0]
4Pin Connector
(RS-232C Connector)
PCI Connector
UART Ch1
33MHz/32bit
PCI BUS
SPD
IO ASIC (Unicorn2)
System
Bus I/F
1284
Cont
Image
Cont
RTC
I/F
IO I/F
PIO
LCX245
UART Ch0
(MBUS Connector)
60Pin Connector
USB1.1
ML60852A
USB
Connector
On Board 32bit
144pin S.O.DIMM 64bit
OSC
12MHz
slot0 16MB
PIO
LCX244
LVX161284
1284 Connector
ETHER
Connector
Ether
MacPHYter II
USBCLK
RESETCLK
AR-M236/M276/M237/M277 PCL PWB (AR-P17) 4 - 2
2. Circuit diagram
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
CPU_(1) EJTAG/PIO
1/12
EEP_SDA
EEP_SCK
PONRST_
4,7,9,11,12
DBG_LED0
13
DBG_LED1
13
DBG_LED2
13
DBG_LED3
13
DIMM_SCK
5
DIMM_SDA
5
1284INT_
12
USBINT_
12
PCIINTB_
4
PCIINTA_
4,11
EREADY_
8
USB_JNC
9
MANUALRST
12
PRINTWU_
8
PSS
T
S
8
VCCWCTL
7
GAJTDI
12
JTM
S
1
2
JTCK
12
JTRST_
1
2
GAJTDO
12
CPUJRST_
CPUJRST_
CGRESET_
12
TRE
S
E
T
_
TRE
S
E
T
_
ERESETIN_
8
25
M
H
z
11
ERSTMON_
2
ERSTMON_
2
PWOFF_
8
TXD
1
6
TXD
0
8
RTS0_
8
RXD0
8
CTS0_
8
RXD1
6
PONRST_
4,7,9,11,12
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
T
P
502
RN1
33x4
2
1
3
7
4
8
6
5
R33
0
NoASM
TP
7
7
8
TPAD13
1
T
P
503
R24
22
T
P
504
R257
0
R8
10
K
NoASM
X1
K50-3C0-E25.0000MR
1
2
3
4
CONT
GND
OUT
VDD
R261
33
T
P
505
R3
1K
R1
9
10K
T
P
506
R3
1
10K
ICT_TDI
1
T
P
481
R2
1K
ICT_TDO
1
T
P
507
L1
4
BLM18BB121
S
N
1
ICT_TRST
1
R1
1K
NoASM
R2
9
10K
T
P
136
T
P
508
IC4B
74
L
C
X
1
4
3
4
R3
0
10K
T
P
509
T
P
572
R5
1K
T
P
553
T
P
510
R18
1K
CN1
FTSH-120-01-L-D
NoASM
1
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
3
5
7
9
TRST_
Reserved
RESET_
PCST0
PCST1
PCST2
PCST3
PCST4
DCLK
PCST5
PCST6
PCST7
PCST8
TPC1
TPC2
TPC3
TVDD
GND
GND
GND
GND
TRESET_
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
TDI/DINT
TDO
TMS
TCK
R20
3
3
R291
10
K
T
P
511
TX4927&37
1
/5
IC1A
TMPR4927/4
9
3
7
C11
B11
C12
E16
K1
B13
B12
A17
C16
B16
A16
C15
B15
E14
C14
B14
E13
D13
C13
K2
L5
L4
L3
L2
K3
D5
P23
R26
E6
E1
M2
E2
E3
F4
H3
J4
F3
F2
F1
G3
G2
G1
H2
J3
G4
J5
H1
J2
J1
A2
A1
B2
B1
C2
C1
D3
D1
AD3
AF3
AC20
AB21
AE3
AE4
AE20
AD21
TDI/DINT
TCK
TMS
TRST
RESET
TPCO/TDO
DCLK
PCST0
PCST1
PCST2
PCST3
PCST4
PCST5
PCST6
PCST7
PCST8
TPC1
TPC2
TPC3
TEST0
TEST1
TEST2
TEST3
TEST4
HALTDOZE
BYPASSPLL
CGRESET
MASTERCLK
SDIN1
TCLK
WDRST
TIMER0
TIMER1
NMI
CTS0
CTS1
INT0
INT1
INT2
INT3
INT4
INT5
RTS0
RTS1
RXD0
RXD1
TXD0
TXD1
SCLK
PIO0
PIO1
BITCLK/PIO2
SDIN0/PIO3
SDOUT/PIO4
PIO5
PIO6
PIO7
CB0/PIO8
CB1/PIO9
CB2/PIO10
CB3/PIO11
CB4/PIO12
CB5/PIO13
CB6/PIO14
CB7/PIO15
T
P
587
T
P
138
R11
0
NO ASM
T
P
462
TPAD2
1
R32
1K
IC2A
74
L
C
X
0
8
1
2
3
T
P
668
T
P
667
R14
33
R4
1K
R256
0
R7
10K
NoASM
T
P
467
R27
8.2K
R15
33
R6
1K
R12
0
NO ASM
R254
0
NoASM
ICT_T
M
S
1
T
P
700
T
P
776
T
P
106
R16
33
T
P
232
R9
33
T
P
724
R28
8.2K
R39
10K
T
P
777
T
P
593
IC4A
74
L
C
X
1
4
1
2
T
P
767
T
P
591
TPAD8
1
R38
10K
T
P
230
TPAD9
1
R17
10
K
TPAD10
1
TPAD3
1
R34
1K
T
P
779
T
P
231
T
P
590
TPAD7
1
R10
33
TPAD1
1
T
P
723
R21
3
3
TPAD4
1
R37
1K
C2
0.1uF
R22
3
3
R255
0
R2
6
10K
R258
33
T
P
499
TPAD5
1
IC3
CAT24WC256KI-TE1
3
5
3
6
1
8
4
2
7
SDA
A
2
SCL
A0
VCC
GND
A1
WP
R23
3
3
T
P
721
TPAD6
1
R36
1K
R25
3
3
R13
33
ICT_TCK
1
TPAD15
1
R35
1K
T
P
780
R260
33
RN2
33x4
2
1
3
7
4
8
6
5
T
P
500
R262
33
CN2
RF-H102TD-1130
<JTAG CONNECTOR>
<JTAGPAD for ICT>
NoASM
1
2
3
4
5
6
7
8
9
10
TCK
GND
TDO
VCC
TMS
N
C
TRST
NC
TDI
GND
C1
0.1uF
T
P
501
TPAD14
1
JP1
T
2
B-SQ
NoASM
1
2
<JTAG>
<Serial EEPROM>
<E_JTAG CONNECTOR>
<EJTAG PATTERN LENGTH =< 100mm>
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