PMC-Sierra, Inc.
PM4541T1XC-EVBD
TELECOM STANDARD PRODUCT
PMC-920314
ISSUE 2
T1XC EVALUATION DAUGHTERBOARD
4 PHYSICAL DESCRIPTION
4.1 Characteristics
The T1XC EVBD is an evaluation board that allows the T1XC device to be feature
tested and evaluated for various applications. Special consideration has been made
in its design to allow testing of the E1XC when it is available. While the daughter-
board can be used standalone with a limited feature set, it has been especially
designed to link with PMC's EVMB (Evaluation Motherboard). The EVMB controller
board provides a microprocessor to read and write to all of the T1XC's internal
registers allowing configuration, control and set-up of the various modes of T1XC
operation.
The T1XC EVBD is laid out for convenient bench top use for test or demonstration
purposes. It is provided with rubber feet that are placed to avoid PCB flexing. Pin
headers provide easy access to all signals necessary during device testing. A
T1/CEPT Digital PLL is installed to provide the necessary 1.544 MHz or 2.048 MHz
backplane rates. External pins allow access when using an externally generated
backplane clock. Ground pins for scope probes are conveniently provided and
distributed. Simple configuration into the example CSU application is provided. The
DIP switches, pin headers, and interface connections are labeled on the silkscreen
for easy identification and ample prototype area is provided. The size of the T1XC
EVBD is constrained to 8.5 x 6.5 inches and, when mated with the EVMB card, will
fit in a standard three ring binder.
12
PMC [ PMC-SIERRA, INC ]
