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參數(shù)資料
| 型號： | Z684 |
| 英文描述： | FUSE 3A/125V SUB-MINIATURE PICO |
| 中文描述： | 控制器雜項(xiàng)-數(shù)據(jù)表參考 |
| 文件頁數(shù)： | 13/13頁 |
| 文件大小： | 129K |
| 代理商： | Z684 |
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Z684 PCI Bus Controller
I
13
OKI SEMICONDUCTOR
Master, Slave, and Parity Blocks
The Z684 supports both master and slave functions of the PCI protocol. When the Customer Application
Module intends to access the PCI bus, the Z684 functions as a bus master. When a PCI agent targets the
Customer Application Module in a transaction, the Z684 functions as a slave device. The Z684 also sup-
ports parity error checking and reporting functions. The following paragraphs provide more information
on the master, slave, and parity blocks.
Master Block
– After detecting a grant signal from a bus arbiter to access the PCI bus, the master
block initiates a transaction cycle by asserting all necessary PCI signals. The cycle continues either
until the last data has been transferred, or until a retry/ termination signal, generated by the target,
is detected by the master block. All standard PCI master functions and bus activities are supported
by the master block.
Slave Block
– The PCI address is monitored and decoded by the Z684 during the PCI address phase.
When the PCI bus address matches the Z684’s address space, the Z684 becomes the PCI
transaction’s target. The slave block in the Z684 responds to the bus access and claims the
transaction by asserting the device select signal; the transaction then starts. The slave block signals
the PCI device which initiated the transaction to stop or retry the transaction when the PMWR
buffer is full. The slave block handles all PCI target functions and bus activities.
Parity Block
– The parity block handles parity generation, checking and reporting. The parity bit is
generated during the transaction according to the PCI specification. Parity is checked one clock after
it is generated. In case of address, data, or system errors, the error is reported by error reporting
signals to the Z684’s configuration registers and related destinations.
For More Information
For information on the Z684 register descriptions and for Z684 functional waveforms, please contact OKI
ASIC Application Engineering.
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| Z706LR | Automotive Fuse; Current Rating:20A; Voltage Rating:32V; Fuse Type:Fast Acting; Fuse Terminals:Blade; Length:18.54mm; Series:257; Fuse Size/Group:18.54 x 19.05 x 5.08mm |
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| Z706 | Automotive Fuse; Current Rating:3A; Voltage Rating:32V; Fuse Type:Fast Acting; Fuse Terminals:Blade; Length:18.54mm; Series:257; Fuse Size/Group:18.54 x 19.05 x 5.08mm |
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