cPCI-MXS64 Technical Reference Manual
3-34
3.5.3 J5 Signal Specification
3.5.3.1.
IDE 0 Interface
Signal
Pin Assignation
Description
IDE0:RST A1,
B1
IDE0: 0-15
B4, E3, C3, A3, D2, B2,
E1, C1, D1, A2, C2, E2,
B3, D3, A4, D4
Prim. Disk Data – These signals are used to transfer
data to or from the IDE device.
IDE0:REQ
A5
Prim. Disk DMA Request - This signal is directly driven
from the IDE device DMARQ signal. It is asserted by
the IDE device to request a data transfer.
IDE0:IOW#
C5
Prim. Disk I/O Write – In normal IDE mode, this is the
command to the IDE device that it may latch data from
SDD lines.
IDE0:IOR#
E5
Prim. Disk I/O Read – In normal IDE mode, this is the
command to the IDE device that it may drive data on
SDD lines.
PIORDY
B5
Prim. I/O Channel Ready – In normal mode, this input
signal is driven directly by the corresponding IDE
device IORDY signal.
IDE0:DACK#
D5
Prim. DMA Acknowledge – This signal directly drives
the IDE device /DMACK signal. It is asserted to
indicate to IDE DMA slave devices that a given data
transfer cycle is a DMA data transfer cycle.
IRQ14 E4
IRQ14
line
IDE0:O16# A6
IOCS16
line
IDE0:A 0-2
D6, C7, E6
Prim. Disk Address – These signals indicates which
byte in either the ATA command block or control block
is being addressed.
IDE0:CS1#,
IDE0 :CS3#
A7, B7
PRI-PD1 D7
IDE0:DIAG# C6
3.5.3.2.
USB 0 and 1 Interfaces
Signal
Pin Assignation
Description
USB0, 1:
DATA (+/-)
B18, C18, D19, E19
USB Data – Differential data path for USB 0 and 1 ports
USB0, 1: GND
B19, D18
USB Ground – Differential ground reference for USB 0
and 1 ports
USB0, 1: VCC
C19, E18
USB Voltage – Differential power level for USB 0 and 1
ports
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