DS3154+ Maxim Integrated Products, DS3154+ Datasheet - Page 32

• Manufacturer Part Number: DS3154+
• Description: IC LIU DS3/E3/STS1 QUAD 144CSBGA
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS3154+

• Number Of Drivers/receivers: 4/4
• Protocol: IEEE 1149.1
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 144-CSBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.
12.1
The DS315x LIUs support the standard instruction codes SAMPLE/PRELOAD, BYPASS, and EXTEST. Optional
public instructions included are HIGHZ, CLAMP, and IDCODE.
contain the following items, which meet the requirements set by the IEEE 1149.1 Standard Test Access Port and
Boundary Scan Architecture:
The TAP has the necessary interface pins, namely JTCLK, JTRST, JTDI, JTDO, and JTMS. Details on these pins
can be found in Section 4. Details about the boundary scan architecture and the TAP can be found in IEEE 1149.1-
1990, IEEE 1149.1a-1993, and IEEE 1149.1b-1994.
Figure 12-1. JTAG Block Diagram
JTAG TEST ACCESS PORT AND BOUNDARY SCAN
JTAG Description
Test Access Port (TAP)
TAP Controller
Instruction Register
10k
JTDI
DS3151/DS3152/DS3153/DS3154 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs
10k
JTMS
IDENTIFICATION
TEST ACCESS PORT
INSTRUCTION
BOUNDARY
REGISTER
REGISTER
REGISTER
REGISTER
CONTROLLER
BYPASS
SCAN
JTCLK
32 of 61
10k
JTRST
Bypass Register
Boundary Scan Register
Device Identification Register
SELECT
Figure 12-1
TRI-STATE
features a block diagram. The LIUs
JTDO