CL-PS7500FE
System-on-a-Chip for Internet Appliance
FEATURES
(cont.)
s
CRT or color/monochrome LCDs
— Resolutions up to 1024
×
768
— 256-entry 28-bit video palette
— Single- and dual-scan panel LCDs (16-bit grayscale)
s
PC-style I/O bus (40-MHz) for connection to any
Cirrus Logic peripheral device
— 56k fax/modem chipset
— CS89XX Ethernet controller
— Can be expanded to 32 bits with external transceivers
s
Serial CD digital sound (32-bit) output
s
Supports EDO and Fast page mode DRAMs
— Up to 132 Mbytes/sec. (peak) using 64-MHz memory
clock and 32-bit-wide DRAM
— Programmable 16- or 32-bit-wide memory system
— Speed-critical paths are pipelined
s
ROM/FLASH
—
—
—
—
Supports two 16-Mbyte banks
Individual read timings
Burst mode reads
Allows for writes under register control for FLASH
OVERVIEW
(cont.)
The video controller features RGB drive of a SVGA
monitor or a color LCD. It also incorporates various
sync inputs, which when combined with an external
encoder, permit the use of interlaced TV displays.
The device incorporates a digital audio controller
with a 32-bit serial interface for connection to the
Cirrus Logic, CS4333 CD-DAC device. The
CL-PS7500FE can also interface to the Cirrus Logic
56K, FastPath
™
modem chipset ideal for Internet
access over a POTS line.
The CL-PS7500FE is available in two speed grades:
q
The CL-PS7500FE supports UMA (unified memory
architecture); EDO DRAMs can be used to achieve
high-memory bandwidth.
The CL-PS7500FE is the main computing engine in
the NC platform defined by Oracle
®
, and runs the
NC operating system and applications.
The device is available in a 240-pin PQFP (plastic
quad flat pack) package.
ARM CPU running at 40 MHz; memory clock
running up to 64 MHz
ARM CPU running at 56 MHz; memory clock
running up to 64 MHz
q
2
ADVANCE DATA BOOK v2.0
June 1997
CIRRUS [ CIRRUS LOGIC ]
