Pin Descriptions - Seagate Nytro 5050 Product Manual

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9.5.5

Pin descriptions

This section provides a pin-out of the NVMe device and a description of the functions provided by the pins.
Table 16 SFF-8639 connector pin descriptions
Pin Name
S1 GND
S2 PETp0 (U.3)
S3 PETn0 (U.3)
S4 GND
S5 PERn0 (U.3)
S6 PERp0 (U.3)
S7 GND
E1 REFCLKB+
E2 REFCLKB-
E3 3.3V_AUX
CLKREQ#/PE
E4
RSTB#
E5 PERST#
E6 IfDet2#
P1 WAKE#
P2 NU
P3 PWRDIS
P4 IfDet#
P5 GND
P6 GND
P7 NU
P8 NU
P9 NU
Seagate Nytro 5050 NVMe SSD Product Manual, Rev C
Description
Ground
Transmitter differential pair,
U.3 Lane 0 Positive
Transmitter differential pair,
U.3 Lane 0 Negative
Ground
Receiver differential pair, U.3
Lane 0 Negative
Receiver differential pair, U.3
Lane 0 Positive
Ground
Reference clock for second
B-Side port
Reference clock for second
B-Side port
+3.3V Auxiliary Power
(Required for SMBus
operation)
Clock request (if Dual Port
mode not enabled) /
Fundamental reset port 1
Fundamental reset port 0
Interface Detect 2 (drive
type)
Signal for Link reactivation
Not Used
Power Disable
Interface Detect (drive type)
Ground
Ground
Not Used
Not Used
Not Used
Pin Name
E7 REFCLK+
E8 REFCLK-
E9 GND
E10 PETp0 (U.2)
E11 PETn0 (U.2)
E12 GND
E13 PERn0 (U.2)
E14 PERp0 (U.2)
E15 GND
E16 HPT1
S8 GND
S9 PETp1 (U.3)
S10 PETn1 (U.3)
S11 GN
S12 PERn1 (U.3)
S13 PERp1 (U.3)
S14 GND
S15 HPT0
S16 GND
PETp1 (U.2) /
S17
PETp2 (U.3)
PETn1 (U.2) /
S18
PETn2 (U.3)
S19 GND
PERn1 (U.2) /
S20
PERn2 (U.3)
PERp1 (U.2) /
S21
PERp2 (U.3)
S22 GND
PETp2 (U.2) /
S23
PETp3 (U.3)
Description
Reference Clock Port 0 Positive
Reference Clock Port 0 Negative
Ground
Transmitter differential pair, Lane 0 Positive
Transmitter differential pair, Lane 0 Negative
Ground
Receiver differential pair, Lane 0 Negative
Receiver differential pair, Lane 0 Positive
Ground
Host Port Type-1
Ground
Transmitter differential pair, U.3 Lane 1 Positive
Transmitter differential pair, U.3 Lane 1 Negative
Ground
Receiver differential pair, U.3 Lane 1 Negative
Receiver differential pair, U.3 Lane 1 Positive
Ground
Host Port Type-0
Ground
Transmitter differential pair, Lane 1 Positive
Transmitter differential pair, Lane 1 Negative
Ground
Receiver differential pair, Lane 1 Negative
Receiver differential pair, Lane 1 Positive
Ground
Transmitter differential pair, Lane 2 Positive
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