Epson EPL-N2050 Service Manual page 220

EPSON EPL-N2050
Table 7-5. Description of Signals - CN5
Signal Name I/O
D[31:0] I/O Data bus
A [23:0] O Address bus. A23 is not connected.
CSX O Chip select signal
RDX O Read signal
WRX O Write signal
WAITX I Wait signal
IREQX I Interfere signal
DREQX DMA request signal. Not used in this controller.
RESET O Reset signal
DTCTX I Board detection signal. Not used in this controller.
Table 7-6. Pin Assignment - CN6
Pin I/O Signal Name
1 I STRBX
2-9 I/O D1-D8
10 O ACKX
11 O BUSY
12 O PE
13 -- SELOT
14 -- AUTOX
15 -- NC
16 -- GND
17 -- CHASSIS GND
18 -- P. L. High (+5V)
Appendix
Description
I
Pin I/O Signal Name
19 O GND
20 I GND
21-23 -- GND
24 O GND
25-30 -- GND
31 I INITX
32 O ERRX
33 -- GND
34 -- NC
35 -- +5V
36 I SELINX
Connector Pin Diagram
Table 7-7. Pin Assignment - CN7
Pin I/O Signal Name
1 -- CHASSI GND
2 O TXD
3 I RXD
4 O RTS
5 I CTS
Table 7-8. Description of Signals - CN7
Signal Name I/O
TXD O Serial data output signal at RS232C level
RXD I Serial data input signal at RS232C level
Output signal at RS232C level. Requests
RTS O
transmission.
Input signal at RS232C level. Permits transmission.
CTS I
NC in this controller.
Input signal at RS232C level. Lets the host know that
DSR I
the opposite side is ready to communicate.
Output signal at RS232C level. Lets the opposite
DTR O side know that communication is available.
This signal can be masked by the software.
Revision B
Pin I/O Signal Name
6 I DSR
7 -- SIGNAL GND
8-19 -- NC
20 O DTR
21-25 -- NC
Description
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