
PM5317 SPECTRA-9953 Telecom Standard Product Data Sheet
Release
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2000741, Issue 5
468
IOTST
The IOTST bit is used to allow normal microprocessor access to the top-level test registers
and control or observe the top-level device input/outputs for board level testing. When
IOTST is a logic 1, all inputs/outputs can be observed/controlled via test registers.
PMCTST
The PMCTST bit is used to configure the SPECTRA-9953 for PMC's manufacturing tests.
When PMCTST is set to logic one, the SPECTRA-9953 microprocessor port becomes the
test access port used to run the PMC "canned" manufacturing test vectors. The PMCTST
can be cleared by setting CSB to logic one or by writing logic zero to the bit.
PMCATST
The PMCATST bit is used to configure the analog portion of the SPECTRA-9953 for
PMC's manufacturing tests. The PMCATST can be cleared by setting CSB to logic one or
by writing logic zero to the bit.
Test_rclk_mux_en
The test_rclk_mux_en is used during test mode to force the test_rclk input clock on the
internal line receive clock (77MHz and 155MHz). The test_rclk_mux_en can be cleared by
setting CSB to logic one or by writing logic zero to the bit.
Test_tclk_mux_en
The test_tclk_mux_en is used during test mode to force the test_tclk input clock on the
internal line receive clock (77MHz and 155MHz). The test_tclk_mux_en can be cleared by
setting CSB to logic one or by writing logic zero to the bit.