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Getting Started
TMS 540 PowerPC 60X Microprocessor Support Instruction Manual
1–3
You should also review electrical, environmental, and mechanical specifications
in the Specifications chapter in this manual as they pertain to your system under
test, as well as the following descriptions of other PowerPC 60X support
requirements and restrictions.
System Clock Rate.
The TMS 540 support can acquire data from the PowerPC
60X microprocessor at speeds of up to 66 MHz
1
.
SUT Power.
Whenever the SUT is powered off, be sure to remove power from
the probe adapter. Refer to Applying and Removing Power at the end of this
chapter for information on how to remove power from the probe adapter.
PPC601 SYSCLK Signal.
When connecting to a PPC601 microprocessor system
under test, the HI_C3:3, HI_CK3, and LO_CK3 podlets must connect to a 1X
clock. When using the TMS 540 product, the application assumes that the
BCLK_EN* signal is a 1X clock. If it is not, you must remove the jumper on
J300 on the probe adapter and connect a 1X clock to pin 2 of J300.
For the relationship between the clock and signals to be correct, you need to
compare the 1X clock to the TS* and TA* signals with a 200 MHz oscilloscope.
There should be 6 ns setup time between the assertion of TS* and TA* (going
low) and the rising clock edge of the 1X clock. To improve the clock trace, you
can add a small ferrite bead to the wire connecting the 1X clock to pin 2 of J300.
MPC604 and PPC604 Microprocessor Support.
The Motorola MPC604 and IBM
PPC604 microprocessors are only supported through the application setup and
disassembler. You can, however, use a commercial test clip and the PPC60X
probe adapter to connect to the signals in you SUT. Refer to the connection
procedure beginning on page 1–11.
Address Pipelining.
If address pipelining sustains for many sequences (approxi-
mately 1 K), there might be performance degradation when scrolling data by
entering a sequence number in the Cursor field.
If address pipelining sustains for additional sequences (1 K or greater), there
might be erroneous address and data association. You can use the Mark Cycles
function to correct the interpretation of erroneous address and data association.
Configuring the Probe Adapter
The probe adapter does not require any configuration.
1
Specification at time of printing. Contact your Tektronix sales representative for
current information on the fastest devices supported.