DS26503L+ Maxim Integrated Products, DS26503L+ Datasheet - Page 97

• Manufacturer Part Number: DS26503L+
• Description: IC T1/E1/J1 BITS ELEMENT 64-LQFP
• Manufacturer: Maxim Integrated Products
• Type: BITS Elementr

Specifications of DS26503L+

• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency-max: -
• Output: -
• Input: -

16. JTAG BOUNDARY SCAN ARCHITECTURE AND TEST ACCESS PORT
The DS26503 supports the standard IEEE 1149.1 instruction codes SAMPLE/PRELOAD, BYPASS, and
EXTEST. Optional public instructions included are HIGHZ, CLAMP, and IDCODE. The DS26503
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: JTRST, JTCLK, JTMS, JTDI, and JTDO. See the
pin descriptions for details.
Figure 16-1. JTAG Functional Block Diagram
Test Access Port (TAP)
TAP Controller
Instruction Register
Bypass Register
Boundary Scan Register
Device Identification Register
10kΩ
V
DD
JTDI
10kΩ
V
DD
JTMS
TEST ACCESS PORT
BOUNDRY SCAN
IDENTIFICATION
INSTRUCTION
CONTROLLER
REGISTER
REGISTER
REGISTER
REGISTER
BYPASS
JTCLK
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10kΩ
V
DD
JTRST
SELECT
OUTPUT ENABLE
MUX
JTDO