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10
Introduction
PCI Arbitration
NuPRO-720 supports seven on-board PCI devices. The PCI local
bus supports the Geode LX, CS5536, PCI2050BPDV and
IT8888G devices. The PCI external bus supports VT6421A and
the two 82551ER devices. Because the LX processor supports
only three pairs, namely PCI REQ# and GNT# arbiters; NuPRO-
720 offers an additional Arbiter (AT123S). The external PCI bus
signal is via PCI2050BPDV (VT6421A, 82551ER X2 and Back-
plan PCI bus).
Companion Device
The AMD Geode CS5536 companion device is designed to work
with an integrated processor component such as an AMD Geode
LX processor. Together, the Geode LX processor and Geode
CS5536 companion device provide a system-level solution well
suited for high-performance, low-power needs of a host of infor-
mation appliances. The following are features of the Geode
CS5536 companion device:
X
Designed for AMD Geode LX processor
X
208-Terminal PBGA (plastic ball grid array) package
X
3.3V I/O and 1.5V (nominal) Core operation
X
Low power operation: 150 mW type in working state
X
Working and Standby power domains
X
32-bit, 33/66 MHz operation, PCI specification v2.2 compliant
X
66 MB per second IDE controller in UDMA mode based on
ATA-5 specification
X
Two independent host USB controllers; doubles the
throughput of a single controller; USB specification v2.0
compliant
X
AC’97 specification v2.1 compliant interface to multiple
audio codecs
X
IR (Infrared) Communication Port
X
System Management Bus (SMB) Controller
X
LPC (Low Pin Count) Port
X
General Purpose I/Os (GPIOs)
X
Real-Time Clock (RTC) with CMOS RAM
X
Power Management Controller
Содержание NuPRO-720
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