Read Sharp AR-C170 (serv.man31) Service Manual online
AR-C170M PRINTER CONTROLLER SECTION 14 - 8
C. Interface
a. USB I/F (CN13)
This connector is USB Type-B 4-pin connector.
USB I/F (CN13) Pin Assignment
OKI ML60852A is used as USB controller. The USB Controller
device is connected with the 32-bit I/O Bus of D8501A, and IOCS0
is used. Moreover, a DMA controller uses DMAC Ch.0 in D8501A.
device is connected with the 32-bit I/O Bus of D8501A, and IOCS0
is used. Moreover, a DMA controller uses DMAC Ch.0 in D8501A.
b. IEEE1284 I/F (CN15)
Built-in 1284 controller in D8501A is used, and 1284 interfaces are
controlled.
controlled.
D8501A internal 1284 Controller Specification
• Supports IEEE1284 Compatible mode, Nibble Mode, Forward/
Reverse ECP mode (without decompression)
• Internal 16 bytes transmit buffer and 16 bytes receive buffer
supports.
• 2 channel DMA support (32 bit packed)
• Transfer data amount has to be multiple of 4-bytes.
This connector is 36 pin Amphenol connector based on IEEE1284.
Pin Assignment
c. Engine I/F
Engine Interface is supported in PRTC (Alpha-5) board. There are
a power supply line, Video-related signals, Scanner-related sig-
nals, and signals of communication relation with engine in this
Engine Interface. Moreover, Video-related signals and communi-
cation-related signals are controlled by D8501A. Scanner-related
signals are controlled by SCNIF ASIC on the SCNIF board via PCI
I/F.
a power supply line, Video-related signals, Scanner-related sig-
nals, and signals of communication relation with engine in this
Engine Interface. Moreover, Video-related signals and communi-
cation-related signals are controlled by D8501A. Scanner-related
signals are controlled by SCNIF ASIC on the SCNIF board via PCI
I/F.
Pin No
Signal
1
VCC
2
DATA -
3
DATA +
4
GND
Spec
OKI ML60852A
USB Rev.
1.1
Transfer type
Control, Bulk, Interrupt, Isochronous
End Point
5 or 6
USB transceiver
Built-in
EP1 DMA
Supported
DMA Channel
2
Bus-powered devices
Supported
DMA Data Width
8 or 16
Intelligent SIE
Supported
D+
D-
D8501A
(IC22)
SA[23:1]
244 Buffer
(IC23-25)
245 Buffer
(IC14-17)
IOWRZ0
IORDZ
SD[31:0]
IOCS0
ED[15:0]
EXTREZ0
EXTACKZ0
OKI
ML60852A
(IC45)
/CS
A[7:0]
D[15:0]
XIN
DMREQ
DMACK_N
D+
D-
EA[29:22]
/WR
/RD
INTX6
USBINTZ
/INTR
USBINTZ
GPIO3
+
-
USB I/F
(CN13)
Vbus
10K
10K
5V
6MHz
(Y2)
XOUT
10K
1M
No. Compatible
Nibble, Byte
ECP
No.
Compatible,
Byte Nibble,
Byte Nibble,
ECP
1
Nstrobe
HostClk
HostClk
19
GND
2
D1
D1
D1
20
GND
3
D2
D2
D2
21
GND
4
D3
D3
D3
22
GND
5
D4
D4
D4
23
GND
6
D5
D5
D5
24
GND
7
D6
D6
D6
25
GND
8
D7
D7
D7
26
GND
9
D8
D8
D8
27
GND
10
Nack
PrtClk
PeriphClk
28
GND
11
Busy
PrtBusy
PriphAck
29
GND
12
Rerror
AckDatReq
nAckReverse
30
GND
13
Select
Xflag
Xflag
33
N.C
14
NautoFd
HostBusy
HostAck
34
N.C
15
N.C
N.C
N.C
35
N.C
16
GND
GND
GND
17
FGND
FGND
FGND
18
LogicHigh
LogicHigh
LogicHigh
31
Nlnit
Nlnit
NrserveReqyest
32
Nfault
NdataAvil
NperiphRequest
36
Nselection IEEE1284active IEEE1284active
Engine I/F
(CN1)
244 Buffer
(IC3-4,
IC6-7)
/CNTUP
/ENGUP
/CNTWU
/ENGWU
KD[3:0]
CD[3:0]
MD[3:0]
YD[3:0]
/KVSYNC
/CVSYNC
/MVSYNC
/YVSYNC
/KHSYNC
/CHSYNC
/MHSYNC
/YHSYNC
/TXD_PRT
/RXD_PRT
DTR_PRT
DSR_PRT
RES_PRT
RES_PCU
PWM
POF
ECLK
Video Data
(4bit/color)
(4bit/color)
Video Clock
Vertical
Synchronization
Synchronization
Horizontal
Synchronization
Synchronization
Communication
Signals
(GPIO)
Signals
(GPIO)
Engine Power
Status Signals
Status Signals
D8501A
(IC22)
VD3[3:0]
VD2[3:0]
VD1[3:0]
VD0[3:0]
ECLK[3:0]
VSYNCZ / INTX4
INTX10
INTX9
INTX8
HSYNC3
HSYNC2
HSYNC1
HSYNC0
GPIO15
GPIO14
RTSZ
CTSZ
GPIO13
GPIO28
TXD
RXD
GPIO9
GPIO30
INTX3
CNTUP
LCX14
ICUUP
DTC114YKA
ENGWU
DTC114YKA
LCX14
PRTCWU
RESPCUN
LCX14
Communication
Signals
(UART)
Signals
(UART)
CMD
LCX14
STS
/SRDY
LCX14
/CRDY
DTC114YKA
LCX14
/POF
LCX14
244 (IC7)
Fan Power CN
(CN12)
SCLK
SEL
244
Buffer
(IC9-10)
SOR[76, 54, 32, 10]
SOG[76, 54, 32, 10]
SOB[76, 54, 32, 10]
Fan PWM
Scanner
Data
(8bit/color)
Data
(8bit/color)
LD_GT
Scanner Control
Signals
Signals
Scanner Clock
SCNIF
Slot
(CN8)
SCNIF
Board
Board
(N1521)
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