參數(shù)資料
型號(hào): OR4E10
廠商: Lineage Power
英文描述: Field-Programmable Gate Arrays(現(xiàn)場(chǎng)可編程門陣列)
中文描述: 現(xiàn)場(chǎng)可編程門陣列(現(xiàn)場(chǎng)可編程門陣列)
文件頁(yè)數(shù): 45/132頁(yè)
文件大?。?/td> 2667K
代理商: OR4E10
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Lucent Technologies Inc.
45
Preliminary Data Sheet
August 2000
ORCA Series 4 FPGAs
Special Function Blocks
(continued)
The MODE signal is generated from the decode of the instruction register. When the MODE signal is high
(EXTEST), the scan data is propagated to the output buffer. When the MODE signal is low (BYPASS or SAMPLE),
functional data from the FPGA’s internal logic is propagated to the output buffer.
The boundary-scan description language (BSDL) is provided for each device in the ORCA Series of FPGAs on the
ORCA Foundry CD. The BSDL is generated from a device profile, pinout, and other boundary-scan information.
5-2844(F)
Figure 29. Boundary-Scan Cell
Boundary-Scan Timing
To ensure race-free operation, data changes on specific clock edges. The TMS and TDI inputs are clocked in on
the rising edge of TCK, while changes on TDO occur on the falling edge of TCK. In the execution of an EXTEST
instruction, parallel data is output from the BSR to the FPGA pads on the falling edge of TCK. The maximum fre-
quency allowed for TCK is 10 MHz.
Figure 30 shows timing waveforms for an instruction scan operation. The diagram shows the use of TMS to
sequence the TAPC through states. The test host (or BSM) changes data on the falling edge of TCK, and it is
clocked into the DUT on the rising edge.
D
Q
D
Q
D
Q
D
Q
SCAN IN
p_out
HOLI
BIDIRECTIONAL DATA CELL
I/O BUFFER
DIRECTION CONTROL CELL
MODE
UPDATE/TCK
SCAN OUT
TCK
SHIFTN/CAPTURE
p_ts
p_in
PAD_IN
PAD_TS
PAD_OUT
0
1
0
1
0
1
0
1
0
1
相關(guān)PDF資料
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OR4E2 Field-Programmable Gate Arrays(現(xiàn)場(chǎng)可編程門陣列)
OR4E4 Field-Programmable Gate Arrays(現(xiàn)場(chǎng)可編程門陣列)
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