Hitachi HDT725025VLA380 Specifications - Page 41
Interface logic signal levels pata model, Signal definition SATA model - deskstar sata driver
UPC - 829686001084
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6.4 Interface logic signal levels (pata model) The interface logic signals have the following electrical specification: Inputs Outputs: Input High Voltage Input Low Voltage Output High Voltage Output Low Voltage 2.0 V min 0.8 V max. 2.4 V min. 0.5 V max. 6.5 Signal definition (SATA model) SATA has receivers and drivers to be connected to Tx+/- and Rx +/- Serial data signal. defines the signal names of I/O connector pin and signal name. No. Plug Connector pin definition Signal I/O S1 GND 2nd mate Gnd S2 A+ Differential signal A from Phy RX+ Input S3 A- RX- Input Signal S4 Gnd 2nd mate Gnd S5 B- Differential signal B from Phy TX- Output S6 B+ TX+ Output S7 Gnd 2nd mate Gnd Key and spacing separate signal and power segments P1 V33 3.3V power 3.3V P2 V33 3.3V power 3.3V P3 V33 3.3V power, pre-charge, 2nd Mate 3.3V P4 Gnd 1st mate Gnd P5 Gnd 2nd mate Gnd P6 Gnd 2nd mate Gnd P7 V5 5V power,pre-charge,2nd Mate 5V P8 V5 5V power 5V Power P9 V5 5V power 5V P10 Gnd 2nd mate Gnd P11 Reserved This pin can be used for LED activity and staggered Spin up. It is controlled by firmware. Reserve P12 Gnd 1st mate Gnd P13 V12 12V power,pre-chage,2nd mate V12 P14 V12 12V power V12 P15 V12 12V power V12 6.5.1 TX+ / TX- These signal are the outbound high-speed differrential signals that are connected to the serial ATA cable. Deskstar T7K500 Hard Disk Drive Specification 27