Table of Contents
Advertisement
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-
GD5434 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-GD5434.
The VGA port routes the graphics data to an industry-standard 3-
row DB15 connector on the front panel of the MVME1600-001 base
board (as illustrated in Figure 1-3).
Refer to Chapter 4 for the pin assignments of the MVME1600-001
front panel VGA connector. Refer to Cirrus Logic's CL-GD5434
Technical Reference Manual for detailed programming information.
PCI Mezzanine Interface
A key feature of the MVME1603/MVME1604 family is the PCI
(Peripheral Component Interconnect) bus. In addition to the on-
board local bus devices (SCSI, Ethernet, graphics, etc.), the PCI bus
supports an industry-standard mezzanine interface, IEEE P1386.1
PMC (PCI Mezzanine Card).
PMC modules offer a variety of possibilities for I/O expansion
through FDDI (Fiber Distributed Data Interface), ATM
(Asynchronous Transfer Mode), graphics, Ethernet, or SCSI ports.
Both versions of the base board support PCI front panel I/O.
The MVME1603/MVME1604 supports one PMC slot. Two 64-pin
connectors on the base board (J11 and J12) interface with 32-bit IEEE
P1386.1 PMC-compatible mezzanines to add any desirable
function. The PCI Mezzanine Card slot has the following
characteristics:
Mezzanine Type
Mezzanine Size
PMC Connectors
Signaling Voltage
PMC (PCI Mezzanine Card)
S1B: Single width, standard depth (75mm x
150mm) with front panel
J11 and J12 (32-Bit PCI with front-panel I/O only)
V
= 5.0Vdc
io
Functional Description
3-9
3
Advertisement
Table of Contents
