DS3141+ Maxim Integrated Products, DS3141+ Datasheet - Page 69
DS3141+
Manufacturer Part Number
DS3141+
Description
IC FRAMER DS3/E3 SNGL 144CSBGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS3141.pdf
(88 pages)
Specifications of DS3141+
Controller Type
DS3/E3 Framer
Interface
LIU
Voltage - Supply
3.135 V ~ 3.465 V
Current - Supply
80mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
144-CSBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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9. JTAG INFORMATION
The DS3141, DS3142, and DS3143, and DS3144 support the standard instruction codes SAMPLE/PRELOAD,
BYPASS, and EXTEST. Optional public instructions included are HIGHZ, CLAMP, and IDCODE. See the JTAG
block diagram in
1149.1 Standard Test Access Port (TAP) and Boundary Scan Architecture:
The Test Access Port has the necessary interface pins, namely JTCLK, JTDI, JTDO, and JTMS, and the optional
JTRST input. Details on these pins can be found in Section 5.6. Refer to IEEE 1149.1-1990, IEEE 1149.1a-1993,
and IEEE 1149.1b-1994 for details about the Boundary Scan Architecture and the Test Access Port.
Figure 9-1. JTAG Block Diagram
9.1 JTAG TAP Controller State Machine
This section covers the operation of the TAP controller state machine. See
states described below. The TAP controller is a finite state machine that responds to the logic level at JTMS on the
rising edge of JTCLK.
Test-Logic-Reset. When JTRST is changed from low to high, the TAP controller starts in the Test-Logic-Reset
state, and the instruction register is loaded with the IDCODE instruction. All system logic and I/O pads on the
device operate normally.
Run-Test-Idle. Run-Test-Idle is used between scan operations or during specific tests. The instruction register and
test register remain idle.
Test Access Port (TAP)
TAP Controller
Instruction Register
Figure
9-1. The device contains the following items, which meet the requirements set by the IEEE
10kW
JTDI
10kW
JTMS
IDENTIFICATION
TEST ACCESS PORT
INSTRUCTION
BOUNDARY
REGISTER
REGISTER
REGISTER
REGISTER
CONTROLLER
BYPASS
SCAN
JTCLK
69 of 88
10kW
JTRST
SELECT
TRI-STATE
Bypass Register
Boundary Scan Register
Device Identification Register
JTDO
Figure 9-2
for details on each of the
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