ROBO-503/ROBO-503N
ROBO-503/ROBO-503N User’s Manual
9
2.3.8 IDE Interface
A primary as well as a secondary IDE controller is provided by the CS5530A companion
chip which supports Ultra DMA mode and PCI bus mastering for the data transfer.
Access to these controllers is provided by a standard IDC 44-pin connector and a Compact
Flash type II connector on the solder side of this board.
2.3.9 USB
The USB interface provides two USB channels that are controlled by the CS5530A.
The signals are provided by means of a 5 x 2 header or by an optional USB bracket
adapter.
2.3.10 Ethernet
The Ethernet interfaces are based on two Intel 82559ER Ethernet controllers which support
both 100Mbit as well as l0Mbit Base-T interface.
The Ethernet controllers are attached to the PCI bus and use PCI bus mastering for data
transfer. The CPU is thereby not loaded during the actual data transfer.
2.3.11 Winbond W83977F-A
The Winbond W83977F-A Super I/O chip provides most input / output interfaces of the
system as the following:
n
COM 1. Operates in RS-232 mode through a charge pump driver. Only 5V supply is
required
n
COM 2. A RS-232/RS-422/RS-485 driver is used whereby RS-232, RS-422 and RS-
485 are provided. Selection of the mode is made by hardware jumper. Driver uses
charge pumps whereby only +5V is required
n
LPT. Support for SPP, EPP and ECP modes
n
Floppy interface
n
Keyboard interface
n
PS/2 Mouse interface
n
IrDA interface for infrared communication. This interface shares the controller of COM2
n
Provision of buffered ISA data bus for BIOS (denoted
XDBus)
n
NVRAM with battery backup for BIOS configuration and real time clock
n
Watchdog timer
