WJLXT385LE.B1 Cortina Systems Inc, WJLXT385LE.B1 Datasheet - Page 92
WJLXT385LE.B1
Manufacturer Part Number
WJLXT385LE.B1
Description
Manufacturer
Cortina Systems Inc
Datasheet
1.WJLXT385LE.B1.pdf
(138 pages)
Specifications of WJLXT385LE.B1
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Table 47. TAP State Description
®
LXT385 Octal E1 S/H PCM Transceiver with JA
TAP Controller
The TAP controller is a 16-state synchronous state machine controlled by the TMS input and
clocked by TCK (see
mode, receiving an instruction, receiving data, transmitting data or in an idle state.
describes in detail each of the states represented in
Test Logic Reset
Run -Test / Idle
Capture - DR
Shift - DR
Update - DR
Capture - IR
Shift - IR
Update - IR
Pause - IR
Pause - DR
Exit1 - IR
Exit1 - DR
Exit2 - IR
Exit2 - DR
State
In this state the test logic is disabled. The device is set to normal operation mode. While in
this state, the instruction register is set to the ICODE instruction.
The TAP controller stays in this state as long as TMS is Low. Used to perform tests.
The Boundary Scan Data Register (BSR) is loaded with input pin data.
Shifts the selected test data registers by one stage toward its serial output.
Data is latched into the parallel output of the BSR when selected.
Used to load the instruction register with a fixed instruction.
Shifts the instruction register by one stage.
Loads a new instruction into the instruction register.
Momentarily pauses shifting of data through the data/instruction registers.
Temporary states that can be used to terminate the scanning process.
Figure
16).The TAP controls whether the LXT385 ransceiver is in reset
Figure
Description
16.
Revision Date: 19-Jan-2006
Document Number: 249252
Revision Number: 006
Table 47
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