Seagate Savvio 15K.2 SAS Product Manual, Rev. E 61, Table 13: SAS pin descriptions

Savvio 15K.2 SAS Product Manual, Rev. E 61
Table 13: SAS pin descriptions
Pin Signal name Signal type Pin Signal name Signal type
S1 Port A Ground P1* NC (reserved 3.3Volts)
S2* +Port A_in Diff. input pair P2* NC (reserved 3.3Volts)
S3* -Port A_in P3 NC (reserved 3.3Volts)
S4 Port A Ground P4 Ground
S5* -Port A_out Diff output pair P5 Ground
S6* +Port A_out P6 Ground
S7 Port A Ground P7 5 Volts charge
S8 Port B Ground P8* 5 Volts
S9* +Port B_in Diff. input pair P9* 5 Volts
S10
*-Port B_in P10 Ground
S11 Port A Ground P11
*Ready LED Open collector out
S12
*-Port B_out Diff output pair P12 Ground
S13
*+Port B_out P13 12 Volts charge
S14 Port B Ground P14
*12 Volts
P15
*12 Volts
* - Short pin to support hot plugging
NC - No connection in the drive.
12.4.6 SAS transmitters and receivers
A typical SAS differential copper transmitter and receiver pair is shown in Figure 16. The receiver is AC cou-
pling to eliminate ground shift noise.
Figure 16. SAS tr ansmitters and receivers
Receiver
Differential
Transfer Medium
.01
.01
100100
Transmitter
RX
RY
TX
TY