Little Board P6d Module
1-3
The CompactFlash disk is a solid-state or rotating media disk system that emu lates an ID E driv e.
It uses standard CompactFlash disk media, similar to a PCMCIA memory card, but smaller. Insert
the CompactFlash disk media in the on-board CompactFlash socket, and use it in much the same
way you would use a removable-media hard drive. The CompactFlash drive is architectu rally
equivalent to an IDE drive in your system. When installed, it becomes one of the two IDE drives
supported by the primary EIDE disk controller. It can be configured as either an IDE master or
slave drive.
Serial Ports
The Little Board P6d module provides four RS232C serial ports, implemented using 16C550- type
UARTs. These UARTs are equipped with 16-byte FIFO buffers to improve throughput.
Serial ports 1 & 2 have full modem support. There are RS232 level shifters on all sign als. The RX
and TX data signals can also be configured as RS485/RS422. The TTL versions of the TX and RX
signals for port 1, 3, and 4 are also brought out to the utility connector. Port 2 TTL TX and RX are
brought out to the Utility connector via the IrDA interface.
Parallel Port
An enhanced bidirectional parallel port interface conforms to the IEEE-1284 standard. It provides
features attractive to embedded system designers, including increased speed, an internal FIFO
buffer, and DMA transfer capability.
Floppy Interface
An on-board floppy disk interface provides access to standard floppy drives. The interface supports
two floppy drives, 5-1/4 inch or 3-1/2 inch. All standard floppy drive types, fro m 360K at 5-1/4 in ch
to 1.44M at 3-1/2 inch are supported.
PCI-Bus EIDE Interfaces
On-board PCI EIDE/Ultra DMA/33 interfaces provide high-speed hard disk, IDE CD-ROM drive,
and other IDE device access. The interfaces support up to four IDE devices (via primary and
secondary drive interfaces). The interfaces are fully compliant with the AS/NSIS ATA Rev. 3.0
specification and the ATAPI Specification.
The CompactFlash interface is implemented as an IDE drive. If it is installed, it takes the positio n
of one of the drives of the primary IDE interface (settable as a master or slave drive).
PCI Audio Interface
The SoundBlaster™ compatible audio interface is implemented using a combination of th e Triden t
4DWAVE-NX PCI DirectSound Accelerator, the National LM4549 AD97 CODEC and a National
LM4863 Audio Amplifier.