Akai MPC 2500 Service Manual page 20

i5
:E
CFVCC
IC5
l-07<1-LVC245AT
(TRANSCEIVER)
IC5
I-IJ74LVC246AT
(TRANSCEIVER>
IC16
51970BDY
(CF INTERFACE SWITCH)
PH1
HCPLDB71111
(PHOTO COJPLER)
+6V
+3. ~ .,.....,
~
~:=~
~ M D R X O
HCPLD1!171Z11
(PHOTO COUPLER)
~: : ~ =fl=r
MDRX1
MDTX0B
MDTX1B
MDTX2B
t.1DTX3B
Cl
Cl
I
.9
Cl
0
...J
.9
I
t
1~DD+5V
I
~
I
;DD+5V
i
ICO
HD74LVC245AT
(TRANSCEIVER)
IC9
HD74LVC245AT
CTRANSCE I VER>
IC10
,,,..,.
HD74LVC245AT
CTRANSCE I VER)
~
OOMUU
OOMUL
=-•
=
IDA1B
IOAilB
A2-A4
IDA2B
TiSi:508
=
IOCS1B
""fiScsf"
I DDMRQ
-----------1>--
~
IDRDV
IDIRQ
CAlB
PWRGDB
- WAIT
-----------1>-- =
IC13
SN74LVCC:524!1A
(TRANSC.E I VER)
IC12
74HCTM1D
(BUFFER)
DOMUU
DOMUL =
A2
""RGD
+o.
,v
VO LCONT
VEEOUT
SLK ~ IC14
0
I
0
~
LRCK
BTCK
TXDAC
SCKSIO
P,VRGD
,c,
HV67V641 62IZIHGT-H
(RES I DENT SO RAM t.EMORV)
Dlil-016
A2-A15
DCM-L
~ u
~
SOCKE
~~~K
IC<
HV57V64162111HGT-H
(RES I DENT SD RAM t.EMORY)
IC104
PCM17B5
(24-bl
t
DAC)
015-031
A2-A15
DGMA_
llGMJJ
"""" ..... =
SDCKE
SDCLK =
Dllr031
IOPC0-IOPC2
SCOTS
IOPC3-IOPC7
A1-A26
IPM0-JPMB
ill"
IPG2. 5.
4.. B
gsJ
lPFl!I
]PF1 = =
,.,.,,.
EXTAL
RAS3
CAS w..-
~
AN2
WE3 AN3
.,.,
AN4
CKE AN5
CLKI02
ANO
WAIT
=
AN7
,.,_
=
IOPJ3
ICPJ4-
IOPDlit
lOPJEi
IOPD1 IOPJ6
JOPD2
IOPD3 CAP1
IOPDEi
JOPD7 VSSPLL1
JOPEB CAP2
IOPE3
JOPE6 VSSPLL2
JOPE6
IOPE7 TXDSIO
RXDSIO
,PHO SCKSIO
IPH1
EXTAL2
IPH2
USB2PO.'JE
IPH,
IPM7
IPH4
IPH5
JOPH7
TXCO
RXCO
TXC2
RXC2
SJOFSYNC
SC'°
SICMCLK
IPG0 101S18
IPG1 ""' ..,,
USB1P
""'
USB1M
""'
""""'
..,.
VBUS
""'
JO
DiHl7 JO
JO
JO
JO
JO
WR Jo
P31
JO
JO
"""
JO
TITTr
Jo
CCLK , 0
~
GCK0 JO
OCK1 JO
OCK2 Jo
GCKO JO
TROY
JO
10
JO
10
JO
10
JO
10
JO
lo Jo
,o , 0
10
JO
10
JO
10
JO
Jo
JO
JO
,.,..,.,.,,,
BTCK
LRCK
FSSIO
TXDAC
SCKSIO
TXDSIO
SIOFSVNc
~
mr
TocS0" =
=
CFCE1
CFIRQ
1'"l'Ri<IT
=
-
~
=
D<MJL
D<MJU
= =
cSR2
E1i5R
""'" =
X1
c::
I
C:
0
~
(I)
C.
0
.9
+12v
-12v
AREF+
AREF-
c3
0
<(
.9
1C901
LM2157EiS
(STEP-DOM-I REGULATOR)
+1 XV
----e-----
+3
,v
IC902
L.M25755
(STEP-Oc:MN REGULATOR)
+1ZV
----e-----
+,.
av
PC CPU BLK Diagram