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參數資料
| 型號： | CO561AD-D |
| 英文描述： | Ichip Internet Controller(Internet網絡控制器) |
| 中文描述： | Ichip互聯網控制器（互聯網網絡控制器） |
| 文件頁數： | 20/52頁 |
| 文件大小： | 1835K |
| 代理商： | CO561AD-D |
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Pin Descriptions
iChip & iChip LAN Datasheet 5-3
5.3 iChip Pin Functional Descriptions
5.3.1 Local Bus Signals
A19–A0
Address Bus (output, three-state, synchronous)
These pins supply non-multiplexed memory or I/O addresses to the system one half of a
CLKO period earlier than the multiplexed address and data bus AD15–AD0. During a
bus hold or reset condition, the address bus is in a high-impedance state.
AD15–AD0
Address and Data Bus (input/output, three-state, synchronous, level-sensitive)
AD15–AD0
—These time-multiplexed pins supply memory or I/O addresses and data to
the system. This bus can supply an address to the system during the first period of a bus
cycle. It supplies data to the system during the remaining periods of that cycle. When
~WR is deasserted, these pins are three-stated.
ALE
Address Latch Enable (output, synchronous)
This pin indicates to the system that an address appears on the address and data bus
(AD15–AD0). The address is guaranteed to be valid on the trailing edge of ALE. This pin
is not three-stated during a bus hold or reset.
~
BHE
Bus High Enable (three-state, output, synchronous)
During a memory access, this pin and the least-significant address bit (AD0 or A0)
indicate to the system, which bytes of the data bus (upper, lower, or both) participate in a
bus cycle. The ~BHE and AD0 pins are encoded as shown in the table below.
~BHE
AD0
0
0
1
0
0
1
1
1
Type of bus cycle
Word Transfer
Even Byte Transfer
Odd Byte Transfer
N/A
Table
5-1 Data Byte Encoding
BHE floats during bus hold and reset. During refresh cycles, the A bus and the AD bus
are not guaranteed to provide the same address during the address phase of the AD bus
cycle. For this reason, the A0 signal cannot be used in place of the AD0 signal to
determine refresh cycles.
CLKO
Clock Output.
This pin Supplies the internal clock to the system. CLKO remains active during RESET.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CO561AD-D/20PC-3 | 制造商:Connect One 功能描述:COMMUNICATION ICHIP PLUS INTERNET CONTROLLER 68PLCC |
| CO561AD-D/20PC-5 | 制造商:Connect One 功能描述:COMMUNICATION ICHIP PLUS INTERNET CONTROLLER 68PLCC |
| CO561AD-L/20PC-3 | 制造商:Connect One 功能描述:COMMUNICATION ICHIP PLUS INTERNET CONTROLLER 68PLCC |
| CO561AD-L/20PC-3G | 制造商:Connect One 功能描述:CO561AD-L SERIAL LAN VERSION, |
| CO561AD-L/20PC-5 | 制造商:Connect One 功能描述:Internet Controller, Ichip LAN Evaluation Platform, Plcc-68 Form FACtor, 5 V |
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