ADLINK ETX-PVR - Manual (Page 46)

Chapter 3 Hardware
40 Reference Manual ETX-PVR
44 PIDE_INTRQ Primary Drive Interrupt Request (IRQ 14) – Asserted by drive when it has
pending interrupt (PIO transfer of data to or from the drive to the host).
45 NC Not Connected
46 PIDE_AK* Primary DMA Channel Acknowledge – Used by the host to acknowledge
data has been accepted or data is available. Used in response to
PIDE_DMARQ when asserted.
47 NC Not Connected
48 PIDE_RDY Primary I/O Channel Ready – When negated extends the host transfer cycle
of any host register access when the drive is not ready to respond to a data
transfer request. High impedance if asserted.
49,
50 VCC DC Power – +5 volts +/-5%
51 NC Not Connected
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
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
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
58 PIDE_D15 Primary Disk Data 15 – These signals (0 to 15) provide the Primary IDE disk
data signals.
59 NC Not Connected
60 PIDE_D0 Primary Disk Data 0 – Refer to J4, pin-58 for more information.
61 NC Not Connected
62 PIDE_D14 Primary Disk Data 14 – Refer to J4, pin-58 for more information.
63 NC Not Connected
64 PIDE_D1 Primary Disk Data 1 – Refer to J4, pin-58 for more information.
65,
66 GND Ground
67 NC Not Connected
68 PIDE_D13 Primary Disk Data 13 – Refer to J4, pin-58 for more information.
69 NC Not Connected
70 PIDE_D2 Primary Disk Data 2 – Refer to J4, pin-58 for more information.
71 NC Not Connected
72 PIDE_D12 Primary Disk Data 12 – Refer to J4, pin-58 for more information.
73 NC Not Connected
74 PIDE_D3 Primary Disk Data 3 – Refer to J4, pin-58 for more information.
Table 3-8. Complete X4 Interface Pin Signal Descriptions (J4) (Continued)