TM C DFTMAX TM Compression 2010.12-SP1 Update Training DFTMAX with Serializer
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TM CDFTMAXTM Compression 2010.12-SP1
Update Training
DFTMAX with SerializerSe a e
1© Synopsys 2011
Agenda
• Clock specification for Serializer registers at p gchip-level
• Port specification for Serializer signals atPort specification for Serializer signals at core-level
• HASS flow with a parallel mode• HASS flow with a parallel mode• Hybrid flow with Serializer insertion
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Specify a Clock for Serializer Registers
set_dft_signal -view exist -type ScanClock \-timing {45 55} -port EXT CLK2 -test mode alltiming {45 55} port EXT_CLK2 test_mode all
set_serialize_configuration \-inputs 1 -outputs 1 -serializer clock EXT CLK2p p _ _
• Note• The clock specified with -serializer_clock must be predefined with t dft i l t S Cl kset_dft_signal –type ScanClock
• Limitation• A clock dedicated to Serialize registers is not supported• The clock has to be used for some other scan cells
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• This limitation will be removed in 2010.12-SP2
Specify Signals For Core-Level Flow
• Specify specific ports for serializer signals in p y p p ga core-level flow– ser clk_
• Clock driving Serializer registers– update_clk_
• Clock driving update stage registers– strobe
• Timing signal for parallel/serial conversion
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Specify Signals For Core-Level Flow
set_dft_signal –view existing_dft -type ScanClock \–timing {45 55} -port MY SERI CLK –test mode alltiming {45 55} port MY_SERI_CLK test_mode all
set_dft_signal –view existing_dft -type ScanClock \–timing {45 55} -port MY_UPD_CLK –test_mode all
set dft signal –view existing dft -type TestData \_ _ g g_ yp–port MY_STROBE –test_mode all
set_serialize_configuration \-inputs 1 outputs 1 -update_stage true \-serializer_clock MY_SERI_CLK \-update_clock MY_UPD_CLK \-strobe MY STROBEstrobe MY_STROBE
• Note• All ports have to be dedicated
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All ports have to be dedicated
HASS Integration Flow With Parallel Modescan_in(serial)
scan_in(parallel)
scan_in(serial)
scan_in(parallel)
DeserializerDeserializer
Decompressor Decompressor
……
p p
SerializerSerializerSerializer
Cl k
Compressor Compressor
Serializer
scan_out(serial)
SerializerClock Controller
scan_out(parallel)
scan_out(serial)
scan_out(parallel)
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(serial)(parallel)(serial)(parallel)
HASS Integration Flow With Parallel ModeSerializer Chains Dedicated to Each CoreSerializer Chains Dedicated to Each Core### core1, core2 (same as core1)define_test_mode my_regular –usage scandefine_test_mode my_serial –usage scan_compressiond fi t t d ll l idefine_test_mode my_parallel –usage scan_compressionset_scan_configuration –chain_count 1 –test_mode my_regularset_dft_configuration -scan_compression enableset_scan_compression_configuration \
-base_mode my_regular \
### top levelfor {set i 0} {$i < 16} {incr i} {
set_dft_signal -view spec -type ScanDataIn \-port SI ${i} –test mode all_ _
-test_mode my_serial \-xtol high \-chain_count 250 \-input 8 \-output 8 \
port SI_${i} test_mode all set_dft_signal -view spec -type ScanDataOut \-port SO_${i} –test_mode all
}define_test_mode my_regular -usage scan
-output 8 \-serialize core_level
set_serialize_configuration \-test_mode my_serial \-parallel_mode my_parallel \
define_test_mode my_serial -usage scan_compression define_test_mode my_parallel -usage scan_compression set_scan_configuration –chain_count 2 set_dft_configuration -scan_compression enable set scan compression configuration \
-input 1 \-output 1 \-update_stage true
create_test_protocoldft drc
_ _ p _ g \-integration_only true \-serialize chip_level
create_test_protocol dft_drc preview dft
Serial2 scan-in/out
Parallel16 (8+8) scan-in/out
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dft_drcinsert_dft
preview_dftinsert_dft
Standard scan2 scan-in/out
HASS Integration Flow With a Parallel ModeCore Levelscan_in(serial)
scan_in(parallel)
scan_in(serial)
scan_in(parallel)
Core Level
DeserializerDeserializer
D D
### core1, core2 (same as core1)define_test_mode my_regular –usage scandefine_test_mode my_serial –usage scan_compre…define_test_mode my_parallel –usage scan_comp…
t fi ti h i t 1 t t
……
Decompressor Decompressorset_scan_configuration –chain_count 1 –test_m…set_dft_configuration -scan_compression enabl…set_scan_compression_configuration \
-base_mode my_regular \-test mode my serial \
Serializer
Compressor Compressor
_ y_-xtol high \-chain_count 250 \-input 8 \-output 8 \serialize core level
Serializer
scan out
SerializerSerializer
Clock Controller
scan outscan outscan out
-serialize core_levelset_serialize_configuration \
-test_mode my_serial \-parallel_mode my_parallel \-input 1 -output 1 \
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scan_out(serial)
scan_out(parallel)
scan_out(serial)
scan_out(parallel) -update_stage true
HASS Integration Flow With a Parallel ModeChip Level Serial mode
scan_in(serial)
scan_in(parallel)
scan_in(serial)
scan_in(parallel)
Chip Level Serial mode2 scan-in/out
Parallel mode16 (8+8) scan-in/out
Standard scan mode2 scan-in/out
DeserializerDeserializer
D D
### top levelfor {set i 0} {$i < 16} {incr i} {
set_dft_signal -view spec -type ScanDataIn \$
……
Decompressor Decompressor-port SI_${i} –test_mode all set_dft_signal -view spec -type ScanDataOut \-port SO_${i} –test_mode all
}define test mode my regular -usage scan
Serializer
Compressor Compressor
_ _ y_ g gdefine_test_mode my_serial -usage scan_compression define_test_mode my_parallel -usage scan_compression set scan configuration chain count 2
Serializer
scan out
SerializerSerializer
Clock Controller
scan outscan outscan out
set_scan_configuration –chain_count 2 set_dft_configuration -scan_compression enable set_scan_compression_configuration \
-integration_only true \-serialize chip_level
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scan_out(serial)
scan_out(parallel)
scan_out(serial)
scan_out(parallel)
_
HASS Integration Flow With a Parallel ModeLimitation
• Parallel mode is not supported with Serializer
Limitation
ppchain concatenation (block-to-block)
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Hybrid Flow
scan_in
Decompressor DecompressorDecompressor
DeserializerDeserializer Deserializer
…
Decompressor
U_core_1 …
Decompressor
U_core_2
Decompressor
Compressor CompressorCompressorSerializer
Clock Controller
SerializerSerializer Serializer
scan_out
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Hybrid Flowset test_serializer_ip_insertion_concat trueset_scan_configuration -chain_count 3 \
–clock_mixing mix_clocks set_dft_configuration
-scan compression enable
set_serialize_configuration \-input 1 \
scan_in
scan_compression enable set_scan_compression_configuration \
-xtol high -chain_count 50 \-input 6 -output 6 \-hybrid true -serialize chip_level
-output 1 \-ip_inputs [list U_core_1 1 U_core_2 1] \-ip_outputs [list U_core_1 1 U_core_2 1]
Decompressor DecompressorDecompressor
DeserializerDeserializer Deserializer
…
Decompressor
U_core_1 …
Decompressor
U_core_2
Decompressor
Compressor CompressorCompressor
Serializer Clock
Controller
SerializerSerializer Serializer
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Hybrid Flow with Partitions
scan_in
Decompressor DecompressorDecompressor
Deserializer
Decompressor
DeserializerDeserializer Deserializer
…
Decompressor
U_core_1 …
Decompressor
U_core_2
Decompressor Decompressor
Compressor CompressorCompressorSerializer
CompressorSerializer
Serializer Serializer
scan_out
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Hybrid Flow with Partitions
scan_in
default partitionpart 1
Decompressor DecompressorDecompressor
Deserializer
Decompressor
DeserializerDeserializer Deserializer
default_partitionpart_1
…
Decompressor
U_core_1 …
Decompressor
U_core_2
Decompressor Decompressor
Compressor CompressorCompressorSerializer
CompressorSerializer
Serializer Serializer
scan_out
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Hybrid Flow with Partitions
scan_in
default partitionpart 1
# -- global setting -- #set test_serializer_ip_insertion_concat true set_dft_configuration -scan_compression enable
t i fi ti \
Decompressor DecompressorDecompressor
Deserializer
Decompressor
DeserializerDeserializer Deserializer
default_partitionpart_1 set_scan_compression_configuration \-hybrid true \-serialize chip_level
…
Decompressor
U_core_1 …
Decompressor
U_core_2
Decompressor Decompressor
Compressor CompressorCompressorSerializer
CompressorSerializer
Serializer Serializer
scan_out
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Hybrid Flow with Partitions
# --- part_1 ---define_dft_partition part_1 –include [list TOP_UDL_1]
scan_in
default_partitionpart_1
current_dft_partition part_1 set_scan_configuration \
-chain_count 1 \-clock_mixing mix_clocks
set scan compression configuration \
Decompressor DecompressorDecompressor
Deserializer
Decompressor
DeserializerDeserializer Deserializer
_ _ p _ g \-xtol high \-input 8 -output 8 \-chain_count 200
set_serialize_configuration \i t 1 t t 1
…U_core_1 …U_core_2
-input 1 -output 1
# Define 1 scan-in and scan-out port with set_dft_signal
Compressor CompressorCompressorSerializer
CompressorSerializer
Serializer Serializer
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scan_out
Hybrid Flow with Partitions
# --- default partition ---current_dft_partition default_partition set scan configuration \
scan_in
default_partitionpart_1
set_scan_configuration \-chain_count 3 -clock_mixing mix_clocks
set_scan_compression_configuration \-input 8 -output 8 \-chain_count 200 –xtol high
Decompressor DecompressorDecompressor
Deserializer
Decompressor
DeserializerDeserializer Deserializer
set_serialize_configuration \-input 1 -output 1 \-ip_inputs [list U_core_1 1 U_core_2 1] \-ip_outputs [list U_core_1 1 U_core_2 1]
…U_core_1 …U_core_2# Define 3 scanins/outs with set_dft_signal
Compressor CompressorCompressorSerializer
CompressorSerializer
Serializer Serializer
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scan_out
Hybrid Flow with PartitionsLimitations
• Parallel access mode is not supported
Limitations
pp• Serializer chain concatenation is not
supportedsupported
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Predictable Success
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