W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 15

• Manufacturer Part Number: W90220F
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

The above information is the exclusive intellectual property of Winbond Electroncs Corp. and shall not be dsiclosed or distributed or reproduced without permission from
Winbond.
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5
5.1
5.1.1
Overview :
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Block Diagram :
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Features :
Related Pins :
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Operation Modes :
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5.1.2
Overview :
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Block Diagram :
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Features :
supports up to 4 banks of FPM- (fast page mode) or EDO-DRAM (SIMM)
supports up to 4 banks of ROM or Flash memory
optional parity bits for each data bytes
CAS#-befor-RAS# refresh cycles for DRAM module
programmable RAS#/CAS# timing for DRAM access
programmable wait states for ROM and Flash memory access
provides two channels for external devices to do 8-bit dma io-to-memory transfer
flexible block-transfer mode and demand mode are supported
provides two 16-bit IDE IO-channels connecting IDE devices
provides 8-bit io-to-memory or memory-to-io transfer mode
provides 8-, 16- and 32-bit memory-to-memory transfer modes
MEGACELLS
FUNCTIONAL DESCRIPTIONS
DMA CONTROLLER
MEMORY CONTROLLER
W90220F
Version 0.84