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.
ꢂ FD1: FDD Connector
PIN Description PIN Description
1
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
N/C
2
DRVDEN0
N/C
3
4
1
18
5
6
8
DRVDEN1
INDEX#
MTR0#
7
9
10
12
14
16
18
20
22
24
26
28
30
32
34
11
13
15
17
19
21
23
25
27
29
31
33
DS1#
DS0#
MTR1#
DIR#
STEP#
WDATA#
WGATE#
TRAK00#
WRTPRT#
RDATA#
HDSEL#
DSKCHG#
17 34
GND
N/C
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.
ꢂ CN6/CN7: COM 1/COM 2 Connector (5x2 Header)
PIN Description PIN Description
1
3
5
7
9
DCD
RXD
TXD
DTR
GND
2
4
DSR
RTS
CTS
RI
9
1
2
6
10
8
10
N/C
14