DS3141+ Maxim Integrated Products, DS3141+ Datasheet - Page 70
DS3141+
Manufacturer Part Number
DS3141+
Description
IC FRAMER DS3/E3 SNGL 144CSBGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS3141.pdf
(88 pages)
Specifications of DS3141+
Controller Type
DS3/E3 Framer
Interface
LIU
Voltage - Supply
3.135 V ~ 3.465 V
Current - Supply
80mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
144-CSBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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- Download datasheet (2Mb)
Figure 9-2. JTAG TAP Controller State Machine
Select-DR-Scan. All test registers retain their previous state. With JTMS low, a rising edge of JTCLK moves the
controller into the Capture-DR state and initiates a scan sequence. JTMS high moves the controller to the Select-
IR-SCAN state.
Capture-DR. Data can be parallel loaded into the test data registers selected by the current instruction. If the
instruction does not call for a parallel load or the selected register does not allow parallel loads, the test register
remains at its current value. On the rising edge of JTCLK, the controller goes to the Shift-DR state if JTMS is low or
to the Exit1-DR state if JTMS is high.
Shift-DR. The test data register selected by the current instruction is connected between JTDI and JTDO and shifts
data one stage toward its serial output on each rising edge of JTCLK. If a test register selected by the current
instruction is not placed in the serial path, it maintains its previous state.
Exit1-DR. While in this state, a rising edge on JTCLK with JTMS high puts the controller in the Update-DR state,
which terminates the scanning process. A rising edge on JTCLK with JTMS low puts the controller in the Pause-DR
state.
Pause-DR. Shifting of the test registers is halted while in this state. All test registers selected by the current
instruction retain their previous state. The controller remains in this state while JTMS is low. A rising edge on
JTCLK with JTMS high puts the controller in the Exit2-DR state.
1
0
Test-Logic-Reset
Run-Test/Idle
0
1
1
0
Capture-DR
1
Select
DR-Scan
Shift-DR
Pause-DR
Update-DR
Exit1- DR
Exit2-DR
70 of 88
0
0
1
0
1
1
0
1
0
1
0
1
0
Capture-IR
1
Select
IR-Scan
Shift-IR
Exit1-IR
Pause-IR
Exit2-IR
Update-IR
0
0
1
0
1
1
0
1
0
1
0
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