Sas Transmitters And Receivers - Seagate Savvio 10K Product Manual

Table 23: SAS pin descriptions
Pin Signal 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 A 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.
9.4.6

SAS transmitters and receivers

A typical SAS differential copper transmitter and receiver pair is shown in Figure 18. The receiver is AC cou-
pling to eliminate ground shift noise.
TX
Transmitter
100
TY
Figure 18. SAS transmitters and receivers
60
Signal type
Diff. input pair
Diff output pair
Diff. input pair
Diff output pair
.01
Differential
Transfer Medium
.01
Pin Signal name
P1* NC (reserved 3.3Volts)
P2* NC (reserved 3.3Volts)
P3 NC (reserved 3.3Volts)
P4 Ground
P5 Ground
P6 Ground
P7 5 Volts charge
P8* 5 Volts
P9* 5 Volts
P10 Ground
P11 Ready LED
*
P12 Ground
P13 12 Volts charge
P14 12 Volts
*
P15 12 Volts
*
RX
Receiver
100
RY
Savvio SAS Product Manual, Rev. D
Signal type
Open collector out