DS2155LNB+ Maxim Integrated Products, DS2155LNB+ Datasheet - Page 202
DS2155LNB+
Manufacturer Part Number
DS2155LNB+
Description
IC TXRX T1/E1/J1 SGL 100-LQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2155L.pdf
(238 pages)
Specifications of DS2155LNB+
Function
Single-Chip Transceiver
Interface
E1, HDLC, J1, T1
Number Of Circuits
1
Voltage - Supply
3.14 V ~ 3.47 V
Current - Supply
75mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
100-LQFP
Includes
BERT Generator and Detector, CMI Coder and Decoder, HDLC Controller
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
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Figure 34-2. TAP Controller State Diagram
34.2 Instruction Register
The instruction register contains a shift register as well as a latched parallel output and is 3 bits in length.
When the TAP controller enters the Shift-IR state, the instruction shift register is connected between JTDI
and JTDO. While in the Shift-IR state, a rising edge on JTCLK with JTMS LOW shifts the data one stage
toward the serial output at JTDO. A rising edge on JTCLK in the Exit1-IR state or the Exit2-IR state with
JTMS HIGH moves the controller to the Update-IR state. The falling edge of that same JTCLK latches
the data in the instruction shift register to the instruction parallel output. Instructions supported by the
DS2155 and its respective operational binary codes are shown in
1
0
Test Logic
Reset
Run Test/
Idle
0
1
0
1
Capture DR
Update DR
Pause DR
1
Select
DR-Scan
Exit2 DR
Shift DR
Exit DR
202 of 238
0
1
0
0
1
0
1
1
0
0
1
0
1
Capture IR
Update IR
1
Table
Pause IR
Select
IR-Scan
Shift IR
Exit2 IR
Exit IR
0
1
1
1
0
0
0
17-A.
1
1
0
0
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