Ampro Corporation XTX 820 manual GND5, GND7, VCC6

Chapter 3 Hardware

Pin #

Signal

Description

50	VCC4	+5 volts +/-5%
51	NC	Not Connected (SIDE_IOW*)
52	PIDE_IOR*	Primary Drive I/O Read – Primary strobe signal for read functions.
		Negative edge enables data from a register or data port of the drive onto the
		host data bus. Positive edge latches data at the host.
53	NC	Not Connected (SIDE_DRQ)
54	PIDE_IOW*	Primary Drive I/O Write – Primary strobe signal for write functions.
		Negative edge enables data from a register or data port of the drive onto the
		host data bus. Positive edge latches data at the host.
55	NC	Not Connected (SIDE_D15)
56	PIDE_DRQ	Primary DMA Request – Used for DMA transfers between host and drive
		(direction of transfer controlled by IOR* and IOW*). Also used in an
		asynchronous mode with ACK*. Drive asserts an IRQ when ready to
		transfer or receive data.
57	NC	Not Connected (SIDE_D0)
58	PIDE_D15	Primary Disk Data 15 – These signals (0 to 15) provide the Primary IDE
		disk data signals.
59	NC	Not Connected (SIDE_D14)
60	PIDE_D0	Primary Disk Data 0 – Refer to pin-58 for more information.
61	NC	Not Connected (SIDE_D1)
62	PIDE_D14	Primary Disk Data 14 – Refer to pin-58 for more information.
63	NC	Not Connected (SIDE_D13)
64	PIDE_D1	Primary Disk Data 1 – Refer to pin-58 for more information.
65	GND5	Ground
66	GND7	Ground
67	NC	Not Connected (SIDE_D2)
68	PIDE_D13	Primary Disk Data 13 – Refer to pin-58 for more information.
69	NC	Not Connected (SIDE_D12)
70	PIDE_D2	Primary Disk Data 2 – Refer to pin-58 for more information.
71	NC	Not Connected (SIDE_D3)
72	PIDE_D12	Primary Disk Data 12 – Refer to pin-58 for more information.
73	NC	Not Connected (SIDE_D11)
74	PIDE_D3	Primary Disk Data 3 – Refer to pin-58 for more information.
75	NC	Not Connected (SIDE_D4)
76	PIDE_D11	Primary Disk Data 11 – Refer to pin-58 for more information.
77	NC	Not Connected (SIDE_D10)
78	PIDE_D4	Primary Disk Data 4 – Refer to pin-58 for more information.
79	NC	Not Connected (SIDE_D5)
80	PIDE_D10	Primary Disk Data 10 – Refer to pin-58 for more information.
81	VCC5	+5 volts +/-5%
82	VCC6	+5 volts +/-5%

XTX 820 Reference Manual 53