CS98000 Cirrus Logic, Inc., CS98000 Datasheet - Page 18

• Manufacturer Part Number: CS98000
• Description: DVD Video Processor
• Manufacturer: Cirrus Logic, Inc.

3. FUNCTIONAL DESCRIPTION
3.1
The CS98000 block diagram is shown in
3.2
3.2.1
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Two Powerful 32-bit RISC processors (RISC0 and
RISC1)
Virtual memory support
Optimizing C compiler
Big or little endian data formats support
MAC multiply/accumulate in 2 cycles with C support
4 Kbyte instruction cache, 2 Kbyte data cache
Single cycle instructions, runs at 81 Mhz
Block Diagram
CS98000 Device Details
RISC-32 Processors
Audio, SDRAM)
PCM, SPDIF
DMA Control
AUDIO DSP
(Navigation &
(Debug Port)
(BitBlt, CSS)
PLL
Interface
Interface
CODEC
RISC0
AC '97
Control)
I2C
(Main,
Figure 14. CS98000 Block Diagram
Figure
Mem Control
(SDRAM,ROM)
(Application)
14.
RISC1
3.2.2
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3.2.3
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Powerful 24/32 bit DSP processor, programmable
through CS98000 API, See CS98000 Software API,
(DS525UM1)
24-bit fixed point logic, with 54-bit accumulator
Single-cycle throughput, 2-cycle latency multiply
accumulate, 32-bit simple integer logic. 8-Kbyte in-
struction cache, 8-Kbyte program visible local mem-
ory
Single cycle instructions, runs at 81 Mhz
Includes several hardware lockable semaphore
registers
General-purpose register for inter-processor com-
munication
32-bit timers for I/O and other uses, with program-
mable interval rates
(I/O, Scale, PIP, Mix)
Video Processor
MPEG2 Video
Host Interface
2/4/8 Bit OSD
(ATAPI,AV,ISA)
External IO
SubPicture
(GPIO, IR)
Powerful 24/32-Bit DSP
System Controls
Registers
Decoder
Decoder
CS98000