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參數(shù)資料
| 型號： | OCX160-PPT |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | OCX160 Crosspoint Switch |
| 中文描述： | OCX160交叉點開關 |
| 文件頁數(shù)： | 17/44頁 |
| 文件大小： | 710K |
| 代理商： | OCX160-PPT |
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OCX160 Crosspoint Switch
—
Preliminary Data Sheet
I-Cube, Inc.
[Rev. 1.6] 2/20/01
17
1.4.8
JTAG Instructions
Table 8
JTAG Instructions
I [3:0]
BB
BA
B9
B8
B7
A6-A0
Instruction
Description
0
0 0 0
X
X
X
X
X
X
Sample/EXTEST
Places the device in scan mode.
0
0 0 1
X
X
X
X
X
X
Sample/EXTEST
Places the device in scan mode.
0
0 1 0
X
X
X
X
X
X
Reset the Crosspoint
Array
Resets the entire Crosspoint Array to no-connect. All
other Output Buffer configurations are unchanged by
this operation.
0
0 1 1
X
X
X
X
X
X
Set Array for
Broadcast mode
Use the JTAG Address Register as the Input address to
be the broadcast input Connects the selected Input to
all Output cells and disconnects all other Inputs.
Activating the Global Update JTAG instruction returns
the Crosspoint array from the Broadcast mode to the
previous programed state.
0
1 0 0
X
Clock
Select
Data
Mode
OE
OE
Output Buffer
Address
Program a Buffer
Programs the Output Buffer address specified in the
JTAG instruction (A6-A0). The configuration data is
also specified in the JTAG instruction bits BA-B7. See
Table 9 for bit assignment of the Buffer functionality.
0
1 0 1
X
X
X
X
X
Output Address/
Buffer
Configuration
readback
Readback the connectivity of the Crosspoint cell with
the Input location specified in the JTAG Address
Register and the Output location specified JTAG
instruction (A0-A6). It also returns the configuration of
the Output Buffer addressed in the JTAG instruction
(A0-A6).
The readback data is shifted out of TDO in the
following sequence:
1. Crosspoint Connect (1=connected, 0=no
connection)
2. Output Enable
—
B7 (see Table 9)
3. Output Enable
—
B8 (see Table 9)
4. Output Data Source
—
B9 (0=Flow-through,
1=registered)
5. Output Clock Select
—
BA (0=Global Clock,
1=Next Neighbor)
6. State of Broadcast bit
7. State of the RCE bit
NOTE: This instruction does not increment the JTAG
Address Register. This instruction also requires two
DR cycles
0
1 1 0
X
X
X
X
X
X
Update the
Crosspoint Array
Update the programmed connection from the Loading
SRAM to the Active SRAM.
0
1 1 1
X
X
X
X
X
X
Disconnect Input
cell
Disconnect the Crosspoint connections from the Input
address specified in the JTAG Address Register.
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