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What is IA63484?

This electronic component, produced by the manufacturer "InnovASIC", performs the same function as "Advanced CRT Controller".


IA63484 Datasheet PDF - InnovASIC

Part Number IA63484
Description Advanced CRT Controller
Manufacturers InnovASIC 
Logo InnovASIC Logo 


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IA63484
Advanced CRT Controller
Preliminary Data Sheet
FEATURES
innovASIC
High-speed graphics
- Drawing rate: 200 ns/pixel max (color drawing)
- Commands: 38 commands including 23 graphic drawing commands:
Dot, Line, Rectangle, Poly-line, Polygon, Circle, Ellipse, Paint, Copy, etc.
- Colors: 16 bits/word: 1,2,4,8,16 bits/pix el (5 types) monochrome to 64k colors max
- Pattern RAM: 32 bytes
- Converts logical X-Y coordinate to physical address
- Color operation and conditional drawing
- Drawing area control for hardware clipping and hitting
Large frame-memory space
- Maximum 2 Mbytes graphic memory and 128 kbytes character memory separate from
MPU memory.
- Maximum Resolution: 4096 x 4096 pixels (1 bit/pixel mode)
CRT display control
- Split Screens: three displays and one window
- Zoom: 1 to 16 times
- Scroll: vertical and horizontal
Interleaved access mode for flashless display and superimposition
External synchronization between ARTCs or between ACRTC and external device (TV system
or other controller.
DMA interface
Two programmable cursors
Three Scan modes
- Non-interlaced
- Interlace sync
- Interlace sync and video
Interrupt request to MPU
256 characters/line 32 raster/ line, 4096 rasters/screen
Maximum clock frequency: 20MHz
CMOS, single +5V power supply
The IA63484 is a "plug-and-play" drop-in replacement for the original Hitachi© HD63484. This
replacement IC has been developed using innovASIC’s MILESTM, or Managed IC Lifetime
Extension System, cloning technology. This technology produces replacement ICs far more complex
than "emulation" while ensuring they are compatible with the original IC. MILESTM captures the
design of a clone so it can be produced even as silicon technology advances. MILESTM also verifies
the clone against the original IC so that even the "undocumented features" are duplicated. This data
sheet documents all necessary engineering information about the IA63484 including functional and
I/O descriptions, electrical characteristics, and applicable timing.
Copyright © 2003
innov ASIC
The End of Obsolescence
ENG 21101041201
Page 1 of 32
www.innovasic.com
Customer Support:
1−888−824−4184

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IA63484 equivalent
IA63484
Advanced CRT Controller
Figure 2: IA63484 Block Diagram
res_n
Preliminary Data Sheet
dreq_n
dack_n
done_n
irq_n
DMA
Control
Unit
Interrupt
Control
Unit
Register
Address
Data
Drawing
Processor
20
16
draw_adrs[19:0]
draw_data[15:0]
draw_en
write
16
d[15:0]
cs_n
rs_n
rw_n
dtack_n
MPU
Interface
23 25
V cc V SS
disp_adrs[19:0]
Display
Processor
20
15
raster_adrs[4:0]
chr_int
ccud
lpstb
2
Timing
Processor 2
gcud[1:0]
hsync
vsync
exsync
disp[1:0]
m_cyc
as
clk2
16
4
CRT
Interface
2
2
draw_n
mrd
mad[15:0]
ma19_16_ra[3:0]
ra4
chr
lpstb
cud1_n, cud2_n
hsync_n
vsync_n
exsync_n
disp1_n, disp2_n
mcyc
as_n
clk_2
IA63484 System Description:
Some CRT controllers provide a single bus interface to the frame buffer that must be shared with the host
MPU. However, refreshing large frame buffers, and accessing the frame buffer for drawing operations can
quickly saturate the shared bus.
The IA63484 uses separate host MPU and frame buffer interfaces. This allows the IA63484 full access to the
frame buffer for display refresh and drawing operations and minimizes the use of the MPU system bus by the
IA63484. A related benefit is that a large frame buffer (2 MB for each IA63484) can be used, even if the host
MPU has a smaller address space or segment size restriction.
The IA63484 can use an external Direct Memory Access Controller (DMAC) to increase system throughput
when many commands, parameters and data must be transferred to the IA63484. Advanced DMAC features
such as the HD68450 “chaining” modes can be used to develop powerful graphics system architectures.
More cost-sensitive or less performance-sensitive applications might not require a DMAC. In these cases, the
interface to the IA63484 can be handled under MPU software control.
While both IA63484 bus interfaces (host MPU and frame buffer) are 16 bits wide, the IA63484 also offers an
8 bit MPU mode for easy connection to popular 8 bit busses.
Copyright © 2003
innov ASIC
The End of Obsolescence
ENG 21101041201
Page 5 of 32
www.innovasic.com
Customer Support:
1−888−824−4184


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On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for IA63484 electronic component.


Information Total 32 Pages
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