OCX160 Datasheet, PDF (18/44 Pages) List of Unclassifed Manufacturers – OCX160 Crosspoint Switch

OCX160 Crosspoint Switch—Preliminary Data Sheet
Table 8 JTAG Instructions (Continued)
I [3:0] BB BA B9 B8 B7
A6-A0
Instruction
Description
1 0 0 0 X X X X X Output Address Disconnect Input Disconnect the Crosspoint cell at the Input location
and Output
specified at the JTAG Address Register and the Output
location specified in the Disconnect JTAG instruction
(A6-A0).
All other connections from the same input address or
to the same output address remain the same.
1 0 0 1 X X X X X Output Address Connect with
Connects the Crosspoint cell at the Input location
ImpliedDisconnect specified on the JTAG Address Register and the output
location specified in the Connect JTAG instruction
(A6-A0).
All other connections from the same Input address or
the same Output address are set to no-connects.
NOTE: This instruction increments the JTAG Address
Register (Input address).
1 0 1 0 X X X X X Output Address Connect—no
Connects the Crosspoint cell at the Input address
ImpliedDisconnect specified in the JTAG Address Register and the Output
address specified in the Connect JTAG instruction
(A6-A0).
All other connections from the same input remain the
same as before.
1 0 1 1 X X X X X Input Address Set the JTAG
Sets the 7-bit JTAG Address Register with the 7-bit
Address Register address (A6-A0) of the JTAG Instruction Register. The
7-bit address of the JTAG Address Register becomes
the Input port address for Crosspoint Access.
1100 X X X X X
X
Device ID out
Serialize the device ID and revision history out to
TDO. ID for the OCX160 is 0x0000B89F
1101 X X X X X
X
Reset Output Buffer Resets the Crosspoint Array to no-connects. Sets the
and Crosspoint
Output buffer to Flow-through mode with Output
Array
Enabled. The device ID is serialized to TDO.
1110 X X X X X
X
Set RCE Bit
Sets the RCE bit of the Mode Control Register with the
JTAG instruction bit A0.
To turn ON the RCE bit, encode bit A0 to 1.
To turn OFF the RCE bit, encode bit A0 to 0.
1111 X X X X X
X
Bypass
Places device in a mode to pass TDI data to TDO with
one clock delay. Used for programming and testing
devices through serial connected JTAG controls.
18
[Rev. 1.6] 2/20/01
I-Cube, Inc.