5.1 Physical Interface
5.1.4 Connector pinouts
The pin definitions are shown in Table 5.1.
Table 5.1 Connector pinouts
Signal segment key
S1 Gnd
2nd
mate
S2 A+
S3 A-
Differential signal pair A from Phy
Connected to TXD at the host side.
Connected to RXD at the device side.
S4 Gnd
2nd
mate
S5 B-
S6 B+
Differential signal pair B from Phy
Connected to RXD at the host side.
Connected to TXD at the device side.
Signal segment
S7 Gnd
2nd
mate
"Key and spacing separate signal and power segments"
P1 V33
N.C.(Open)
P2 V33
N.C.(Open)
P3 V33
N.C.(Open)
P4 Gnd
1st
mate
P5 Gnd
2nd
mate
P6 Gnd
2nd
mate
P7
V5
5 V power, pre-charge, 2nd mate
P8
V5
5 V power
P9
V5
5 V power
P10 Gnd
2nd
mate
P11 Staggered
Spin-up
Mode/
Activity
LED
•
Staggered Spin-up mode detect for input
•
Activity LED drive for output
For the specification of P11, see Section 5.1.5.
(in next page)
When the host system does not use these
functions, the corresponding pin to be mated
with P11 in the power cable receptacle
connector shall be grounded.
P12 Gnd
1st mate
P13 V12
N.C.(Open)
P14 V12
N.C.(Open)
Power segment
P15 V12
N.C.(Open)
Power segment key
Notes:
Note) Since applying a single external supply voltage of 5 V enables this
drive to operate it is unnecessary to 3.3 V and +12 V
power supplies.
C141-E280
5-7
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