DS21552L+ Maxim Integrated Products, DS21552L+ Datasheet - Page 101
DS21552L+
Manufacturer Part Number
DS21552L+
Description
IC TXRX T1 1-CHIP 5V 100-LQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS21352L.pdf
(137 pages)
Specifications of DS21552L+
Function
Single-Chip Transceiver
Interface
E1, HDLC, J1, T1
Number Of Circuits
1
Voltage - Supply
4.75 V ~ 5.25 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
Product
Framer
Number Of Transceivers
1
Data Rate
64 Kbps
Supply Voltage (max)
3.465 V
Supply Voltage (min)
3.135 V
Supply Current (max)
75 mA (Typ)
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Ic Interface Type
Parallel, Serial
Supply Voltage Range
4.75V To 5.25V
Operating Temperature Range
0°C To +70°C
Digital Ic Case Style
LQFP
No. Of Pins
100
Filter Terminals
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Figure 19-2 TAP CONTROLLER STATE DIAGRAM
19.3 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 will be connected between
JTDI and JTDO. While in the Shift-IR state, a rising edge on JTCLK with JTMS LOW will shift the data
one stage towards the serial output at JTDO. A rising edge on JTCLK in the Exit1-IR state or the Exit2-
IR state with JTMS HIGH will move the controller to the Update-IR state. The falling edge of that same
JTCLK will latch the data in the instruction shift register to the instruction parallel output. Instructions
supported by the DS21352/552 with their respective operational binary codes are shown in Table 19-1.
1
0
Test Logic
Reset
Run Test/
Idle
0
1
0
1
Capture DR
Update DR
1
Pause DR
Select
DR-Scan
Exit2 DR
Shift DR
Exit DR
101 of 137
0
1
0
0
1
0
1
1
0
0
1
0
1
Capture IR
Update IR
1
Pause IR
Select
IR-Scan
Shift IR
Exit2 IR
Exit IR
0
1
1
1
0
0
0
1
1
0
0
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