21
3.11 Parallel Port (CN13)
This port is usually connected to a printer; The WAFER-6820 includes
an on-board parallel port, accessed through a 26-pin flat-cable
connector CN13.
•
CN13: Parallel Port Connector (2.0MM)
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1
STROBE#
14
AUTO FORM FEED#
2
DATA 0
15
ERROR#
3
DATA 1
16
INITIALIZE
4
DATA 2
17
PRINTER SELECT LN#
5
DATA 3
18
GROUND
6
DATA 4
19
GROUND
7
DATA 5
20
GROUND
8
DATA 6
21
GROUND
9
DATA 7
22
GROUND
10
ACKNOWLEDGE
23
GROUND
11
BUSY
24
GROUND
12
PAPER EMPTY
25
GROUND
13
PRINTER SELECT
26
NC
3.12 Serial Ports (CN14, CN15)
The WAFER-6820 offers two high speeds NS16C550 compatible
UARTs with Read/Receive 16 byte FIFO.
•
CN14: Serial Port DB-9 Connector (COM1)
PIN NO.
DESCRIPTION
1
DATA CARRIER DETECT (DCD)
2
RECEIVE DATA (RXD)
3
TRANSMIT DATA (TXD)
4
DATA TERMINAL READY (DTR)
5
GROUND (GND)
6
DATA SET READY (DSR)
7
REQUEST TO SEND (RTS)
8
CLEAR TO SEND (CTS)
9
RING INDICATOR (RI)
Содержание WAFER-6820
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