14
3.9 Floppy Disk Drive Connector
The HS-7250/HS-7650 uses a standard 34-pin connector,
FD1
, for
floppy disk drive connection. A total of two FDD drives may be
connected to
FD1
at any given time.
FD1: FDD Connector
PIN Description PIN Description
1
GND
2
DRVDEN0
3
GND
4
N/C
5
GND
6
DRVDEN1
7
GND
8
INDEX#
9
GND
10
MTR0#
11
GND
12
DS1#
13
GND
14
DS0#
15
GND
16
MTR1#
17
GND
18
DIR#
19
GND
20
STEP#
21
GND
22
WDATA#
23
GND
24
WGATE#
25
GND
26
TRAK00#
27
GND
28
WRTPRT#
29
N/C
30
RDATA#
31
GND
32
HDSEL#
33
N/C
34
DSKCHG#
18
34
1
17
3.10 Serial Port Connectors
The HS-7250/HS-7650 series offers NS16C550 compatible
UARTs with Read/ Receive 16-byte FIFO serial ports and internal
10-pin headers and RS-422/485 connector.
CN6/CN7: COM 1/COM 2 Connector (5x2 Header)
PIN Description PIN Description
1
DCD
2
DSR
3
RXD
4
RTS
5
TXD
6
CTS
7
DTR
8
RI
9
GND
10
N/C
1
9
10
2
