CPCI-6020 CompactPCI Single Board Computer Installation and Use (6806800A51C
)
Controls, LEDs, and Connectors
CompactPCI User I/O Connector
66
DA (2:0)
Drive register and data port address lines.
DCDn
Data carrier detected
DD (15:0)
Data lines
DIOR_L I/O
read
DIOW_L
I/O write
DIR_L
Controls the direction of the floppy head reader.
DMACK_L
DMA acknowledge
DMARQ
DMA Request
DRESET_L
Reset signal to drive
DS (1:0)
Select disk drives
DSKCHG_L
Indicates drive door has been opened
DSRn
Data set ready
DTRn
Data terminal ready
EIDE port (ATA-2), TTL Levels
ENETn_R-
Low side of differential receive data
High side of differential receive data
ENETn_T-
Low side of differential transmit data
High side of differential transmit data
Ethernet Ports 1 & 2:
Floppy Disk, TTL levels:
HDSEL_L
Selects the top or bottom head
INDEX_L
Indicates the beginning of track
INTRQ
Drive the interrupt request.
IORDY
Indicates the drive ready for I/O
KBAUXVCC
Fused power for the keyboard and auxiliary device.
KBDDAT
Clock for the PC/AT or PS/2 keyboard
Keyboard/Auxiliary Device TTL:
MTR (1:0)
Enable/ Disable motor
RDATA_L
Data read
RESET_L
Board hard reset output, TTL
Rin
Ring indicator
RTSn
Request to send
RXDn
Serial receive data
Serial COM Ports (a & b), RS-232 levels:
SPKROC_L
PC/AT Speaker output, open collector
STEP_L Step
head
Table 3-12 J5 Signal Descriptions (continued)
Signal Description
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