W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 17
W90220F
Manufacturer Part Number
W90220F
Description
Pa-risc Embedded Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W90220F.pdf
(79 pages)
- Current page: 17 of 79
- Download datasheet (502Kb)
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.
17
5.1.3
Overview :
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Block Diagram :
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Features :
Related Pins :
(Left for Blank)
Operation Modes :
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5.1.4
Overview :
(Left for Blank)
Block Diagram :
(Left for Blank)
Features :
- Compatible (centronic) mode (forward channel)
- Nibble mode (reverse channel, compatible with all existing PC hosts - relies on software control)
- Byte mode (reverse channel, compatible with IBM PS/2 host)
- EPP mode (bi-directional half-duplex channel - relies on software control)
- ECP mode (fast bi-directional half-duplex channel)
- High performance half-duplex forward and reverse channel
supports "long framing" and "short framing" (synchronous, frame-based protocol)
provides "master mode" and "slave mode"
build-in two 48x16 (or 24x32) data fifo to accelerate transmit/receive operation
programable data bits per one frame (sampling rate) : 1 ~ 256 bits/frame
programable data bits per word (resolution of each sampling) : 1 ~ 32 bits/word
programable multi-word (per frame) transfer : 1 ~ 16 words/frame
supports all IEEE P1284 transfer modes including :
Host-side design
Provide a special operation mode to emulate peripheral-side centronic device
Build-in one 16bytes FIFO to accelerate ECP mode and centronic forward transfer
Provide DMA capability to accelerate moving data from parallel port interface to system memory
ECP mode is also including :
PARALLEL PORT INTERFACE
PCI BRIDGE
W90220F
Version 0.84
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