Scsi Controller; Video Controller; Peripheral Controller; Serial Ports - NEC Express5800 320La User Manual

SCSI Controller

The PCI board includes an embedded QLogic ISP12160A SCSI dual channel controller
for supporting the hard disk drives in the storage bays. It is a 64-bit direct memory
access (DMA) bus master and supports 32-bit PCI buses at 33 MHz. This SCSI
controller interfaces the PCI bus to two Ultra 160 SCSI buses. The SCSI controller is
fully autonomous and capable of managing multiple I/O operations and data transfers
without host intervention.

Video Controller

The system has an integrated Intel 69000 HiQVideo Accelerator highly integrated
graphics controller that supports the following:
BIOS compatibility with 1/4VGA, VGA, SVGA, XGA, and SXGA
!
2 MB of onboard synchronous DRAM (SDRAM) embedded memory
!
Superb 2D video performance
!
Analog VGA monitors (single and multiple frequency, interlaced and
!
noninterlaced) with a maximum vertical retrace noninterlaced frequency of
100 Hz.

Peripheral Controller

The Super I/O PC97317 integrated peripheral controller supports two enhanced serial
ports (UARTs) and an integrated Real Time Clock (RTC) module. The I/O panel board
provides the connector interface for each serial port.

Serial Ports

The serial ports (UART1 and UART 2) provide data rates up to 1.5 Mbaud and 13 IRQ
channel options. When disabled, serial port interrupts are available to add-in boards.

Real Time Clock

The real-time clock (RTC), which is located in the PCI module on the PCI board,
provides system clock/calendar information stored in a non-volatile memory
(NVRAM). The real-time clock battery provides power backup for the real-time clock.
See Figure 1-14.
The RTC battery may need to be replaced because of its battery life span. The battery
powers the clock in the absence of power. When the battery starts to weaken, it loses
voltage, and the system settings stored in CMOS RAM (for example, the date and time)
may be wrong.
The RTC battery (Vendor Part No. CR2032) is available through many vendors.
Contact your sales representative or dealer for a list of approved devices.
1-22 System Overview