ADSP-BF531SBBC400 Analog Devices Inc, ADSP-BF531SBBC400 Datasheet - Page 8

• Manufacturer Part Number: ADSP-BF531SBBC400
• Description: IC,MICROPROCESSOR,32-BIT,CMOS,BGA,160PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Series: Blackfin®r
• Type: Fixed Pointr

Specifications of ADSP-BF531SBBC400

• Rohs Status: RoHS non-compliant
• Interface: SPI, SSP, UART
• Clock Rate: 400MHz
• Non-volatile Memory: ROM (1 kB)
• On-chip Ram: 52kB
• Voltage - I/o: 1.8V, 2.5V, 3.3V
• Voltage - Core: 1.20V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 160-CSPBGA
• Device Core Size: 16b
• Architecture: Modified Harvard
• Format: Fixed Point
• Clock Freq (max): 400MHz
• Mips: 400
• Device Input Clock Speed: 400MHz
• Operating Supply Voltage (typ): 1.2/1.8/2.5/3.3V
• Operating Supply Voltage (min): 0.8/1.75V
• Operating Supply Voltage (max): 1.32/3.6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 160
• Package Type: CSPBGA
• Package: 160CSP-BGA
• Numeric And Arithmetic Format: Fixed-Point
• Maximum Speed: 400 MHz
• Device Million Instructions Per Second: 400 MIPS
• For Use With: ADZS-BF533-EZLITE - KIT W/BOARD EVAL FOR ADSP-BF533
• Lead Free Status / Rohs Status: Not Compliant

ADSP-BF531/BF532/BF533
7.
8.
9.
10.
05000166 - PPI Data Lengths between 8 and 16 Do Not Zero Out Upper Bits:
05000167 - Turning SPORTs on while External Frame Sync Is Active May Corrupt Data:
05000179 - PPI_COUNT Cannot Be Programmed to 0 in General Purpose TX or RX Modes:
DESCRIPTION:
For PPI data lengths greater than 8 and less than 16, the upper bits received into memory that are not part of the PPI data should be zero.
For example, if the user is using 10-bit PPI data length, the upper 6 bits in memory should be zero. Instead, the PPI captures whatever
data is on the upper 6 PPI data pins (muxed as PFx pins).
WORKAROUND:
The software workaround is to mask out the upper 6 bits when processing received data.
APPLIES TO REVISION(S):
0.3, 0.4, 0.5, 0.6
DESCRIPTION:
The SPORTs are level sensitive to External Frame Syncs. If a SPORT is configured for External Frame Syncs and the frame sync is active
when the SPORT is first enabled, the SPORT will start receiving data immediately when enabled. This may occur in the middle of a frame,
causing incorrect data to be received.
This anomaly also applies to Stereo Serial Modes (I2S and variants), except in the case where either the LRFS or the RRFST bit is set (not
both).
WORKAROUND:
Hold off external Frame syncs until the SPORT is fully enabled. If you use a serial device with external frame syncs that can't be held off
until the SPORT is enabled, a programmable flag pin can be connected to the Frame Sync. The PFx pin can be programmed to continually
sample the SPORT Frame Sync and then enable the SPORT when the RFS / TFS signals are in the inactive state.
For Stereo Serial Modes, either set the LRFS or the RRFST bit (not both), if possible.
APPLIES TO REVISION(S):
0.3, 0.4, 0.5, 0.6
DESCRIPTION:
In General Purpose modes, the PPI must receive or transmit blocks of at least 2 words. Single word transfers (PPI_COUNT value of 0) are
not functional.
WORKAROUND:
None
APPLIES TO REVISION(S):
0.3, 0.4
DESCRIPTION:
In self-triggered, continuous sampling operation of the PPI, the delay count specified in the PPI_DELAY register is ignored. As soon as this
mode is enabled, data is transferred.
WORKAROUND:
If a delay is needed, either ignore received data in software or use a mode with at least one frame sync.
APPLIES TO REVISION(S):
0.3, 0.4, 0.5, 0.6
05000180 - PPI_DELAY Not Functional in PPI Modes with 0 Frame Syncs:
NR003532D | Page 8 of 45 | July 2008
Silicon Anomaly List