DS26303L-75+ Maxim Integrated Products, DS26303L-75+ Datasheet - Page 72
DS26303L-75+
Manufacturer Part Number
DS26303L-75+
Description
IC LIU E1/T1/J1 3.3V 144-ELQFP
Manufacturer
Maxim Integrated Products
Type
Line Interface Units (LIUs)r
Datasheet
1.DS26303L-120.pdf
(101 pages)
Specifications of DS26303L-75+
Number Of Drivers/receivers
8/8
Protocol
T1/E1/J1
Voltage - Supply
3.135 V ~ 3.465 V
Mounting Type
Surface Mount
Package / Case
144-LQFP Exposed Pad, 144-eLQFP, 144-HLQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 72 of 101
- Download datasheet (2Mb)
7 JTAG BOUNDARY SCAN ARCHITECTURE AND TEST ACCESS PORT
The DS26303 IEEE 1149.1 design supports the standard instruction codes SAMPLE/PRELOAD, BYPASS, and
EXTEST. Optional public instructions included are HIGHZ, CLAMP, and IDCODE. The DS26303 contains the
following as required by IEEE 1149.1 Standard Test Access Port and Boundary Scan Architecture:
Details on Boundary Scan Architecture and the Test Access Port can be found in IEEE 1149.1-1990, IEEE
1149.1a-1993, and IEEE 1149.1b-1994. The Test Access Port has the necessary interface pins: JTRSTB, TCLK,
JTMS, JTDI, and JTDO. See the pin descriptions for details. For the latest BSDL file go to
www.maxim-ic.com/tools/bsdl/
Figure 7-1. JTAG Functional Block Diagram
•
•
•
•
•
•
Test Access Port (TAP)
TAP Controller
Instruction Register
Bypass Register
Boundary Scan Register
Device Identification Register
10kΩ
+V
JTD1
and search for DS26303.
10kΩ
+V
JTMS
TEST ACCESS PORT
BYPASS REGISTER
BOUNDARY SCAN
IDENTIFICATION
CONTROLLER
INSTRUCTION
REGISTER
REGISTER
REGISTER
TCLK
DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
72 of 101
10kΩ
+V
JTRSTB
SELECT
OUTPUT ENABLE
MUX
JTDO
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