DS21352LB+ Maxim Integrated Products, DS21352LB+ Datasheet - Page 100
DS21352LB+
Manufacturer Part Number
DS21352LB+
Description
IC TXRX T1 1-CHIP 3.3V 100-LQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS21352L.pdf
(137 pages)
Specifications of DS21352LB+
Function
Single-Chip Transceiver
Interface
HDLC, T1
Number Of Circuits
1
Voltage - Supply
3.14 V ~ 3.47 V
Current - Supply
75mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
100-LQFP
Includes
DSX-1 and CSU Line Build-Out Generator, HDLC Controller, In-Band Loop Code Generator and Detector
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
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DS21352/DS21552
SELECT-IR-SCAN
All test registers retain their previous state. The instruction register will remain unchanged during this
state. With JTMS LOW, a rising edge on JTCLK moves the controller into the Capture-IR state and will
initiate a scan sequence for the instruction register. JTMS HIGH during a rising edge on JTCLK puts the
controller back into the Test-Logic-Reset state.
CAPTURE-IR
The Capture-IR state is used to load the shift register in the instruction register with a fixed value. This
value is loaded on the rising edge of JTCLK. If JTMS is HIGH on the rising edge of JTCLK, the
controller will enter the Exit1-IR state. If JTMS is LOW on the rising edge of JTCLK, the controller will
enter the Shift-IR state.
SHIFT-IR
In this state, the shift register in the instruction register is connected between JTDI and JTDO and shifts
data one stage for every rising edge of JTCLK towards the serial output. The parallel register, as well as
all test registers, remain at their previous states. A rising edge on JTCLK with JTMS HIGH will move
the controller to the Exit1-IR state. A rising edge on JTCLK with JTMS LOW will keep the controller in
the Shift-IR state while moving data one stage thorough the instruction shift register.
EXIT1-IR
A rising edge on JTCLK with JTMS LOW will put the controller in the Pause-IR state. If JTMS is HIGH
on the rising edge of JTCLK, the controller will enter the Update-IR state and terminate the scanning
process.
PAUSE-IR
Shifting of the instruction shift register is halted temporarily. With JTMS HIGH, a rising edge on JTCLK
will put the controller in the Exit2-IR state. The controller will remain in the Pause-IR state if JTMS is
LOW during a rising edge on JTCLK.
100 of 137
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