Hitachi HTS541680J9SA00 Specifications - Page 40

7.3 Travelstar 5K160 (SATA) Hard Disk Drive Specification Signal definitions The pin assignments of interface signals are listed as follows: No. Plug Connector pin definition S1 GND 2nd mate S2 A+ Differential signal A from Phy S3 A- Signal S4 Gnd S5 B- 2nd mate Differential signal B from Phy S6 B+ S7 Gnd 2nd mate P1 V33 Key and spacing separate signal and power segments 3.3V power P2 V33 3.3V power P3 V33 3.3V power, pre-charge, 2nd Mate P4 Gnd 1st mate P5 Gnd 2nd mate P6 Gnd 2nd mate P7 V5 5V power,pre-charge,2nd Mate P8 V5 5V power Power P9 V5 P10 Gnd 5V power 2nd mate P11 DAS/DSS P12 Gnd Device Activity Signal / Disable Staggered Spinup1 1st mate P13 V12 12V power,pre-chage,2nd mate P14 V12 12V power P15 V12 12V power Table 23. Interface connector pins and I/O signals Signal Gnd RX+ RXGnd TXTX+ Gnd 3.3V 3.3V 3.3V Gnd Gnd Gnd 5V 5V 5V Gnd Note 1 Gnd V12 V12 V12 I/O Input Input Output Output Note 1; Pin P11 is used by the drive to provide the host with an activity indication and by the host to indicate whether staggered spinup should be used. The signal the drive provides for activity indication is a low-voltage low-current driver. If pin P11 is asserted low the drive shall disable staggered spin-up and immediately initiate spin-up. If pin P11 is not connected in the host (floating), the drive shall enable staggered spin-up. 7.3.1 TX+ / TX- These signal are the outbound high-speed differential signals that are connected to the serial ATA cable 7.3.2 RX+ / RX- These signals are the inbound high-speed differential signals that are connected to the serial ATA cable. The following standard shall be referenced about signal specifications. Serial ATA: High Speed Serialized AT Attachment Revision 1.0a 7-January -2003 40/167