Motorola MVME1603, Installation And Use Manual, Page: 98 / 222

Block Diagram
3-8
3
If the data in the NVRAM is lost, use the number on the label on backplane
connector P2 to restore it.
Refer to Chapter 4 for the pin assignments of the MVME1600-011 front
panel 10BaseT connector. Refer to the MVME712M User’s Manual for
the pin assignments of the transition module AUI connector. Refer to the
MVME760 User’s Manual for the pin assignments of the transition
module AUI and 10BaseT connectors used in the MVME1600-001
Ethernet implementation. Refer to the BBRAM/TOD Clock memory map
description in the MVME1603/MVME1604 Programmer’s Reference
Guide for detailed programming information.
Note The MVME1603/MVME1604 will support either AUI or
10BaseT Ethernet connections, but not both at the same time. To
switch from one type to the other, do the following:
1. Bring the MVME1603/MVME1604 up in PPCBug.
2. Remove the current Ethernet cable and connect the one you
wish to use.
3. Reset the MVME1603/MVME1604 by pressing the
RESET
switch or typing the debug command RESET.
The new connection is automatically recognized by the LAN
controller.
Graphics Interface
MVME1600-001-based versions of the MVME1603/MVME1604 have a
Super VGA (Video Graphics Array) color graphics interface implemented
with a Cirrus Logic CL-GD5446 graphics accelerator. The CL-GD5446
supports pixel clock rates of up to 110MHz. Its internal palette DAC is
configurable for industry-standard 16- or 256-color VGA modes. The
DAC is also extensible to high- and true-color modes of 32 thousand or
16.7 million colors.
Depending on the color selection and bits-per-pixel mode, the CL-GD5446
device supports resolutions of up to 1280 x 1024. 2MB of video buffer
memory (in the form of four 256K x 16, 40-pin SOJ, 60ns DRAM chips)
are available to the CL-GD5446.