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3.14 RS422/485
Connector
This connector is RS422/485 port of COM2. The RS485 port of SAGP-
648E is half-duplex with auto direction. So you do not have to switch
transfer mode while sending or receiving data
•
CN1: RS 422/485 Connector
PIN Description
1 TX+
2 TX-
3 RX+
4 RX-
3.15 Serial ATA Connector
SAGP-648E provides two serial ATA ports to connect with serial ATA
devices.
•
ATA1, ATA2: Serial ATA Connector
PIN Description PIN Description
1 S_TXP 3 S_RXN
2 S_TXN 4 S_RXP
3.16 Floppy Connector
The SAGP-648E board is equipped with a 34-pin daisy-chain drive
connector cable.
•
FDD1: Floppy Connector
PIN Description PIN Description
1 GROUND 2
RWC0-
3 GROUND 4
NC
5 GROUND 6
RWC1-
7 GROUND 8 INDEX-
9 GROUND 10
MO-A
11 GROUND 12
DS-B
13 GROUND 14
DS-A
15 GROUND 16
MO-B
17 GROUND 18
DIR-
19 GROUND 20
STEP-
21 GROUND 22
WD-
23 GROUND 24 WGATE-
25 GROUND 26
TRK0-
27 GROUND 28
WP-
29 GROUND 30 RDATA-
31 GROUND 32
HEAD-