Chapter 3
Hardware
CoreModule 740
Reference Manual
19
Utility 1 Interface
The CoreModule 740 provides two utility interface connectors. Both interfaces, Utility 1 (J5) and Utility 2
(J4), use identical 80-pin connectors. This section describes the Utility 1, J5 interface, which supports the
features listed in the following bullets.
provides a complete list of the Utility 1 connector interface
signals.
•
Serial interface
•
Parallel interface
•
USB interface
•
Mouse and Keyboard interfaces
•
Speaker interface
•
Reset Switch interface
•
HDD Activity LED interface
•
Battery interface
Serial Interface
The two serial port signals are provided through the 80-pin Utility 1 connector (J5) and support the
following features:
•
Both ports are 16550 compatible
•
Programmable word length, stop bits and parity
•
16-bit programmable baud rate and Interrupt generator
•
Loop-back mode
•
Two 16-bit FIFOs and two DMA handshake lines
•
Serial 1 and 2 (COM 1 and COM 2) support RS-232
Parallel Interface
The parallel port interface supports standard parallel, Bi-directional, ECP and EPP protocols. The Super I/O
chip (SCH3112I-NU) provides the parallel port interface signals to support Standard Printer Port (SPP),
Enhanced Parallel Port (EPP), and Enhanced Capabilities Port (ECP) protocols.
USB Interface
The CoreModule 740 supports one root USB (Universal Serial Bus) hub and two functional USB ports
(USB1 and USB2 on J5).
Features implemented in the USB port include the following:
•
USB v2.0 and legacy v1.1 compatible
•
Integrated physical layer transceivers
•
Over current detection status on both USB ports (I/O Hub function)
•
No over current fuses located on the CoreModule 740
Keyboard and Mouse Interfaces
The signal lines for a PS/2 keyboard and mouse are provided through the Utility 1 interface (J5).
