PM4328-PI PMC-Sierra, Inc., PM4328-PI Datasheet - Page 188

• Manufacturer Part Number: PM4328-PI
• Description: Framer, T1|E1|T3 Standard Format, 324-BGA
• Manufacturer: PMC-Sierra, Inc.

STANDARD PRODUCT
DATASHEET
PMC-2011596
12.14 JTAG Support
PROPRIETARY AND CONFIDENTIAL
TRSTB
TMS
TCK
TDI
The TECT3 supports the IEEE Boundary Scan Specification as described in the
IEEE 1149.1 standards. The Test Access Port (TAP) consists of the five
standard pins, TRSTB, TCK, TMS, TDI and TDO used to control the TAP
controller and the boundary scan registers. The TRSTB input is the active-low
reset signal used to reset the TAP controller. TCK is the test clock used to
sample data on input, TDI and to output data on output, TDO. The TMS input is
used to direct the TAP controller through its states. The basic boundary scan
architecture is shown below.
Figure 42: Boundary Scan Architecture
Controller
Access
Test
Port
ISSUE 1
Device Identification
Control
Tri-state Enable
Select
Boundary Scan
Instruction
Register
Register
Register
Register
Decode
Bypass
and
175
Mux
DFF
HIGH DENSITY T1/E1 FRAMER
AND M13 MULTIPLEXER
PM4328 TECT3
TDO