Motorola Laptop CPCI-6020 User Manual Page 66

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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
ENETn_R+ High side of differential receive data
ENETn_T- Low side of differential transmit data
ENETn_T+ 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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