Ampro Corporation XTX 820 manual IDE and Auxiliary Interface J4, IDE Ports

Chapter 3 Hardware

IDE and Auxiliary Interface (J4)

The J4 connector has 100 pins and is used for Primary IDE, Secondary IDE, Ethernet port, RTC/Battery, speaker, power management, SMBus, and power management interfaces.

IDE Ports

•Supports one Primary EIDE channel (Secondary IDE channel not connected)

•Supports EIDE Ultra DMA 33/66/100 in Master Mode

•Master mode PCI supporting EIDE devices

•Supports ATAPI compliant devices including DVD devices

•PIO IDE transfers up to 14 Mbytes/sec

•Bus Master IDE transfers up to 100 Mbps

The standard 40-pin cable pin-outs are listed in Table 3-24 for J3 connector pin reference. The single Primary channel can be routed to the IDE connector on the custom baseboard per the application requirements.

Table 3-24. Simplified Primary IDE Interface Pin/Signal Descriptions (J4)

J4	Signal	40-	Description
Pin #		Pin #
98	HDRST*	1	Hard Reset – Low active hardware reset (RSTDRV inverted)
	GND	2	Ground
96	PIDE_D7	3	Disk Data – These signals (0 to 15) provide the disk data signals
92	PIDE_D8	4	Disk Data 8 – Refer to D7, pin-3, for more information.
88	PIDE_D6	5	Disk Data 6 – Refer to D7, pin-3, for more information.
86	PIDE_D9	6	Disk Data 9 – Refer to D7, pin-3, for more information.
84	PIDE_D5	7	Disk Data 5 – Refer to D7, pin-3, for more information.
80	PIDE_D10	8	Disk Data 10 – Refer to D7, pin-3, for more information.
78	PIDE_D4	9	Disk Data 4 – Refer to D7, pin-3, for more information.
76	PIDE_D11	10	Disk Data 11 – Refer to D7, pin-3, for more information.
74	PIDE_D3	11	Disk Data 3 – Refer to D7, pin-3, for more information.
72	PIDE_D12	12	Disk Data 12 – Refer to D7, pin-3, for more information.
70	PIDE_D2	13	Disk Data 2 – Refer to D7, pin-3, for more information.
68	PIDE_D13	14	Disk Data 13 – Refer to D7, pin-3, for more information.
64	PIDE_D1	15	Disk Data 1 – Refer to D7, pin-3, for more information.
62	PIDE_D14	16	Disk Data 14 – Refer to D7, pin-3, for more information.
60	PIDE_D0	17	Disk Data 0 – Refer to D7, pin-3, for more information.
58	PIDE_D15	18	Disk Data 15 – Refer to D7, pin-3, for more information.
	GND	19	Ground
NC	Key	20	Key pin plug
56	PIDE_DRQ	21	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.

46 Reference Manual XTX 820