11.4.6 Sas Transmitters And Receivers; Figure 27. Sas Transmitters And Receivers - Seagate 1200 SSD Product Manual

Table 24 Micro SAS pin descriptions
P S
IN IGNAL NAME
S1 Port A Ground
S2* +Port A_in
S3* -Port A_in
S4 Port A Ground
S5* -Port A_out
S6* +Port A_out
S7 Port A Ground
S8 Port B Ground
S9* +Port B_in
S10* -Port B_in
S11 Port B Ground
S12* -Port B_out
S13* +Port B_out
S14 Port B Ground
* - Short pin to support hot plugging
NC - No connection in the drive.

11.4.6 SAS transmitters and receivers

A typical SAS differential copper transmitter and receiver pair is shown in Figure 27. The receiver is AC coupling to eliminate
ground shift noise.

Figure 27. SAS transmitters and receivers

S 1200 SSD P
EAGATE RODUCT
S P
IGNAL TYPE IN
P1*
Diff. input pair P2
P3
P4
Diff output pair P5
P6*
P7*
P8*
Diff. input pair P9*
A1*
Diff output pair A2*
M , R . A
ANUAL EV
S
IGNAL NAME
3.3 Volts
3.3 Volts charge
Ground
Ground
5 Volts charge
5 Volts
Reserved
NC (reserved for Manufacturing diagnostic)
NC (reserved for Manufacturing diagnostic)
Vendor specific
Vendor specific
S
IGNAL TYPE
69