ADSP-BF531SBBC400 Analog Devices Inc, ADSP-BF531SBBC400 Datasheet - Page 41

• 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

Silicon Anomaly List
71.
72.
DESCRIPTION:
When the VR_CTL register is programmed to contain VLEV values of 0xA, 0xB, or 0xC (1.05V, 1.10V, and 1.15V, respectively), the actual
Vddint applied to the core through the regulator may drop below the specified tolerance of -5%.
This issue only occurs on parts in LQFP packages.
WORKAROUND:
Either avoid programming these values or program the regulator to the next highest setting to ensure that the Vddint remains above the
minimum threshold for the core clock that the application is running.
APPLIES TO REVISION(S):
0.3, 0.4, 0.5
DESCRIPTION:
When configured in multi-channel mode with channel 0 disabled, DMA transmit data will be sent to the wrong SPORT channel if all of the
following criteria are met:
1) External Receive Frame Sync (IRFS = 0 in SPORTx_RCR1)
2) Window Offset = 0 (WOFF = 0 in SPORTx_MCMC1)
3) Multichannel Frame Delay = 0 (MFD = 0 in SPORTx_MCMC2)
4) DMA Transmit Packing Disabled (MCDTXPE = 0 in SPORTx_MCMC2)
When this specific configuration is used, the multi-channel transmit data gets corrupted because whatever is in the channel 0 placeholder
in non-packed mode gets sent first, even though channel 0 is disabled. The result is a one-word data shift in the output window, which
repeats for each subsequent window in the serial stream. For example, if the non-packed transmit buffer is {0, 1, 2, 3, 4, 5, 6, 7}, and the
window size is 8 channels with channel 0 disabled and channels 1-7 enabled to transmit, the expected data sequence in a series of output
windows is:
1234567--1234567--1234567--1234567
With this anomaly, the output looks like this instead:
0123456--7012345--6701234--5670123
WORKAROUND:
There are several possible workarounds to this:
1) Disable Multichannel Mode
2) Use Internal Receive Frame Syncs
3) Use a Multichannel Frame Delay > 0
4) Use a Window Offset > 0
5) Enable DMA Transmit Packing
6) Do not disable Channel 0
APPLIES TO REVISION(S):
0.3, 0.4, 0.5
05000319 - Internal Voltage Regulator Values of 1.05V, 1.10V and 1.15V Not Allowed for LQFP Packages:
05000357 - Serial Port (SPORT) Multichannel Transmit Failure when Channel 0 Is Disabled:
NR003532D | Page 41 of 45 | July 2008
ADSP-BF531/BF532/BF533