1-5.
Block
Explanation
CPU
CPU is ARM60. This RISC type micro processor has 32-bit address and 32-bit data path.
MADAM
supplies CPU with 12.5 MHz clock.
ROM
1 MB
ROM
stores the system management program. The
ROM
is
connected
to
Slow bus and its data
is
read by
MADAM and MADAM arranges 8-bit data into 32-bit word and send it
to
CPU.
SRAM
32
KB
SRAM is connected to Slow bus. Since Lithium battery backs up SRAM while power is down,
SRAM can retain data. It may be used to back up game data, for example.
DRAM/VRAM
DRAM and VRAM is used as main memory.
VRAM is dual-port memory. This means one port
is
used
as
normal DRAM and the other one
is
used to read and write
data simultaneously with the former port. Therefore, it
is
used as Frame Buffer which
is
required fast access.
ANVIL
This
system
IC
includes
MADAM,
CLIO (the
system
IC's
for
FZ-1) and a
digital
color
encoder.
ANVIL
has
the
following
functions.
CPU
control:
ANVIL
drives
control
signals
for
the
CPU.
Memory
management:
ANVIL
controls
access
to
DRAM's
and
VRAM's.
Cell
engin:
ANVIL
manages
cells
(objects
on TV screen).
DSP:
ANVIL
includes
a
digital
signal
processor,
which
deals
with
sound.
Video
signal
output:
ANVIL
outputs
video
signals
(composit,
Y and C).
AudloDAC
16-bit Audio DAC converts digital audio data from CLIO into analog audio data.
CLIO sends DAC data with serial communication manner.
CD-ROM interface
CD-ROM interface Gate Array
is
the interface between CLIO and both internal CD-ROM drive and External drives which
are connected through Expansion Port.
1-6
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