Hitachi 7K400 Specifications - Page 43
Interface logic signal levels PATA model
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6.4 Interface logic signal levels (PATA model) The interface logic signals have the following electrical specifications: 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. 6.4.1 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. Table 19: Interface connector pins and I/O signals No. Plug Connector pin definition S1 GND 2nd mate S2 A+ Differential signal A from Phy S3 A- Signal S4 Gnd 2nd mate S5 B- Differential signal B from Phy S6 B+ S7 Gnd 2nd mate Key and spacing separate signal and power segments P1 V33 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 5V power P10 Gnd 2nd mate P11 Reserved 1. This pin corresponding to P11 in thebackplane receptacle connector is also reserved 2. The corresponding pin to be mated with P11 in the power cable receptacle connector shall always be grounded P12 Gnd 1st mate P13 V12 12V power,pre-chage,2nd mate P14 V12 12V power P15 V12 12V power Signal Gnd RX+ RXGnd TXTX+ Gnd 3.3V 3.3V 3.3V Gnd Gnd Gnd 5V 5V 5V Gnd Reserve Gnd V12 V12 V12 I/O Input Input Output Output Deskstar 7K400 Hard Disk Drive Specification 29