Analog Devices ADSP-CM411F Manual de usuario

ABOUT ADSP-CM411F/412F/413F/416F/417F/418F/419F SILICON ANOMALIES

These anomalies represent the currently known differences between revisions of the ADSP-CM411F/412F/413F/416F/417F/418F/419F

product(s) and the functionality specified in the ADSP-CM411F/412F/413F/416F/417F/418F/419F data sheet(s) and the Hardware

Reference book(s).

PRODUCT REVISIONS

A product revision letter with the form "-x" is branded on all parts. The implementation field bits <31:28> of the JTAG0_IDCODE register

for the processor and <15:0> of the STATUSREG0 register for the Analog Front End (AFE) can be used to differentiate the revisions as

shown below.

Product REVISION JTAG0_IDCODE<31:28> AFE_STATUSREG0<15:0>

C 0x2 0x3082

0.0 0x1 0x3080

ANOMALY LIST REVISION HISTORY

The following revision history lists the anomaly list revisions and major changes for each anomaly list revision.

Date Anomaly List Revision Data Sheet Revision Additions and Changes

07/24/2017 C PrB Added Silicon Revision C

Added Anomalies: 17000067, 17000080, 17000082, 17000083

06/27/2016 B PrB Added Anomalies: 17000063, 17000064, 17000066, 17000075,

17000076, 17000077

Revised Anomalies: 17000040, 17000041, 17000042, 17000043,

17000046, 17000049, 17000059

12/17/2015 A PrA Initial Version

ADSP-CM411F/412F/413F/416F/417F/418F/419F

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Silicon Anomaly List

NR004483C

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Specifications subject to change without notice. No license is granted by implication or

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registered trademarks are the property of their respective owners.

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SUMMARY OF SILICON ANOMALIES

The following table provides a summary of ADSP-CM411F/412F/413F/416F/417F/418F/419F anomalies and the applicable product

revision(s) for each anomaly.

No. ID Description Rev

0.0 Rev

1 17000033 SMC Byte Enable Signals Tri-State during Read Operations x .

2 17000035 Timer0 Status Interrupt Is Not Functional x .

3 17000036 JTAG May Inadvertently Enter EXTEST Mode x .

4 17000038 M0 DMA Debug Halt Is Not Functional x .

5 17000040 Internal LDO Increases VDD_INT x .

6 17000041 Incorrect VMU Voltage Trip Values x .

7 17000042 Oscillator Watch Dog Frequency Is Not Correct x .

8 17000043 ADC Reference Voltages Do Not Match Specification x .

9 17000044 DAC Output Current Limit Is Less Than Specified x .

10 17000046 ADC Auxiliary Bypass Mode Cannot Be Cleared By Register Write x .

11 17000048 Monitor ADC Conversion Time Exceeds Specification x .

12 17000049 FOCP_LATCH_0/1/2 Latches Have Incorrect Power-Up Value x .

13 17000050 CRC On Over Voltage and Under Voltage DAC Are Incorrect x .

14 17000055 Flash Security Features Are Not Fully Operational x .

15 17000057 PLL Malfunctions at Higher Frequencies x .

16 17000059 Security Keys for Devices Connected in a JTAG Chain Require Leading Zeroes x .

17 17000060 adi_rom_MemCopy() ROM API Leaves MDMA Enabled x .

18 17000063 System Watchpoint Units 3 and 4 Incorrectly Alias Master IDs x .

19 17000064 Back-to-back Writes to Internal SRAM May Be Lost x .

20 17000066 Manual ECC Error Diagnostic Testing of Flash Memory Is Not Functional x .

21 17000067 ADCC Frame Interrupt Status Register Must Be Cleared Between Frames x .

22 17000075 Primary ADC Conversions May Fail with Higher Delays Between Subsequent Conversions x .

23 17000076 First Conversion of ADC0 Fails after AFE Registers Are Accessed x .

24 17000077 FOCP Over Voltage and Under Voltage DAC Output Limited by Offset and Gain Errors x .

25 17000080 Logic Block Array (LBA) Combinatorial Mode Is Not Functional x .

26 17000082 Primary ADC Gain Error Correction Is Not Functional . x

27 17000083 Floating Point Saturation Unit Is Not Functional x .

Key: x = anomaly exists in revision

. = Not applicable

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Silicon Anomaly List

DETAILED LIST OF SILICON ANOMALIES

The following list details all known silicon anomalies for the ADSP-CM411F/412F/413F/416F/417F/418F/419F including a description,

workaround, and identification of applicable product revisions.

1. 17000033 - SMC Byte Enable Signals Tri-State during Read Operations:

DESCRIPTION:

During SMC read operations, the byte enable signals (SMC0_ABE0 and SMC0_ABE1) are tri-stated instead of being driven low. Therefore,

when an 8-bit SMC write access is followed by a 16-bit or 32-bit read access, the read access may fail if the device requires active low byte

enable signals during read operations.

WORKAROUND:

While interfacing with the external SRAM, the SRAM byte enable signals can be driven low during read operations using external logic as

shown in the figure.

For SMC read operations, the SMC0_AOE signal is low. This drives the SRAM_BHE and SRAM_BLE signals low.

This external logic does not affect the SMC write operations, as the SMC0_AOE signal is high during write operations.

APPLIES TO REVISION(S):

0.0

2. 17000035 - Timer0 Status Interrupt Is Not Functional:

DESCRIPTION:

SYSBLK_SISTAT15.TIMER0_STAT bit is always read as 0. Therefore, Timer0 Status Interrupt is not functional.

WORKAROUND:

None.

APPLIES TO REVISION(S):

0.0

3. 17000036 - JTAG May Inadvertently Enter EXTEST Mode:

DESCRIPTION:

When performing a JTAG instruction register scan in multiple parts using the Pause-IR JTAG state, the JTAG controller erroneously enters

the EXTEST state while in the Pause-IR state. The I/O pins may incorrectly drive the rest of the system for multiple JTAG cycles.

WORKAROUND:

Using Pause-IR to break the instruction scan into parts must be avoided. If Pause-IR is used, ensure the ADI JTAG Instruction Register does

not have a value of b'00000 at the pause point. When in the Exit-IR state, if the ADI JTAG Instruction Register contains a value of b'00000,

the JTAG clock must not be stopped. This leaves the I/O pins in an undetermined state until the JTAG clocks resume.

APPLIES TO REVISION(S):

0.0

ADSP-CM411F/412F/413F/416F/417F/418F/419F

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Silicon Anomaly List

4. 17000038 - M0 DMA Debug Halt Is Not Functional:

DESCRIPTION:

The M0 system's DMA debug logic that halts the DMA traffic does not function when a cross trigger unit halts. The DMA operations may

continue in real-time during debug halt.

WORKAROUND:

None.

APPLIES TO REVISION(S):

0.0

5. 17000040 - Internal LDO Increases VDD_INT:

DESCRIPTION:

The internal LDO increases VDD_INT by 250 mV (approximately).

WORKAROUND:

Run the flash info block initialization code each time the flash info block is erased. This modifies the internal LDO register to adjust the

voltage. It is available in the EVAL-CM41X-EZBRD/EVAL-CM41X-EZLITE evaluation platform Board Support Package (BSP). For more

information about how to program the flash info block, refer to the IAR projects located in the ProgramInfoSpace directory.

APPLIES TO REVISION(S):

0.0

6. 17000041 - Incorrect VMU Voltage Trip Values:

DESCRIPTION:

The most significant bit of the voltage trim values for the VDD_EXT and VDD_INT power supply trip levels are not programmed at power-

on-reset. As a result of this,

1. The VMU may detect a fault when the VDD_EXT and VDD_INT voltage levels are within specified range, and/or

2. The VMU may not detect the VDD_EXT and VDD_INT voltage levels operating outside the specified range.

WORKAROUND:

A software patch available in the startup.c file in the EVAL-CM41X-EZBRD/EVAL-CM41X-EZLITE evaluation platform Board Support

Package (BSP) trims the VMU.

APPLIES TO REVISION(S):

0.0

7. 17000042 - Oscillator Watch Dog Frequency Is Not Correct:

DESCRIPTION:

The trim values for the Oscillator Watch Dog (OSCWD) are not loaded properly at boot time, resulting in an incorrect OSCWD frequency.

WORKAROUND:

Manually load the correct trim values for OSCWD as shown in the following code:

#define BITM_TEPADS_PCFG0_AUXTRMEN 0x00010000

*pREG_PADS1_PCFG0 |= BITM_TEPADS_PCFG0_AUXTRMEN;

*pREG_PADS1_PCFG0 &= ~BITM_TEPADS_PCFG0_AUXTRMEN;

APPLIES TO REVISION(S):

0.0

ADSP-CM411F/412F/413F/416F/417F/418F/419F

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Silicon Anomaly List

8. 17000043 - ADC Reference Voltages Do Not Match Specification:

DESCRIPTION:

The ADC reference voltages (VREF0, VREF1, and VREF2) are not calibrated to the specified 2.5 V.

WORKAROUND:

Use the actual ADC reference voltage values in ADC calculations, not the specified value.

APPLIES TO REVISION(S):

0.0

9. 17000044 - DAC Output Current Limit Is Less Than Specified:

DESCRIPTION:

The maximum DAC output current load specification is 5 mA. The actual DAC output current load is limited to 1 mA.

WORKAROUND:

None.

APPLIES TO REVISION(S):

0.0

10. 17000046 - ADC Auxiliary Bypass Mode Cannot Be Cleared By Register Write:

DESCRIPTION:

The auxiliary bypass bit cannot be cleared by a register write. If the ADC is set to enter auxiliary buffer bypass mode during operation, it

cannot subsequently be reverted to non-bypass mode.

WORKAROUND:

If the auxiliary bypass bit is set, a soft reset is required to take the AFE out of auxiliary buffer bypass mode. The ADCC drivers include the

adi_adcc_SetRegister() function to communicate with the AFE through the ADCC module. The ADCC drivers are furnished in the

EVAL-CM41X-EZBRD/EZLITE evaluation platform Board Support Package (BSP).

The following is an example to issue the soft reset to the Analog Front End:

#include <drivers/adcc/adi_adcc.h>

ADI_ADCC_HANDLE handle;

ADI_ADCC_RESULT result;

static char space[ADI_ADCC_MEMORY];

result = adi_adcc_Open(0, space, &handle, false);

result = adi_adcc_SetRegister(handle, REG_USER_CONFIG_REG0_USERCFG, 0x00400000);

if (result == ADI_ADCC_SUCCESS)

{

/* Success! */

}

else

{

/* Failure! */

}

For more information about the APIs, refer to Device Driver documentation and example codes in the Board Support Package (BSP).

APPLIES TO REVISION(S):

0.0

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Silicon Anomaly List

11. 17000048 - Monitor ADC Conversion Time Exceeds Specification:

DESCRIPTION:

The minimum conversion time of the Monitor ADC (ADC0) is 600 ns (instead of 500 ns as per the specifications). Therefore, the maximum

sampling rate of the ADC0 is 1.667 MSPS.

WORKAROUND:

None.

APPLIES TO REVISION(S):

0.0

12. 17000049 - FOCP_LATCH_0/1/2 Latches Have Incorrect Power-Up Value:

DESCRIPTION:

During power-up, the status bits of the FOCP_LATCH_0, FOCP_LATCH_1, and FOCP_LATCH_2 registers are set to 1.

WORKAROUND:

Reading the FOCP_LATCH_0, FOCP_LATCH_1, and FOCP_LATCH_2 registers after power-up clears the latches and allows normal

operation. The ADCC software drivers include the adi_adcc_GetRegister() function to read the Analog Front End (AFE) registers

through the ADCC module. The ADCC drivers are available in the EVAL-CM41X-EZBRD/EZLITE evaluation platform Board Support Package

(BSP).

The following is an example to read from the FOCP_LATCH_0, FOCP_LATCH_1, FOCP_LATCH_2 registers:

#include <drivers/adcc/adi_adcc.h>

ADI_ADCC_HANDLE handle;

ADI_ADCC_RESULT result;

uint32_t val;

static char space[ADI_ADCC_MEMORY];

result = adi_adcc_Open(0, space, &handle, false);

result = adi_adcc_GetRegister(handle, REG_USER_CONFIG_REG0_STATUSREG0, &val);

if (result == ADI_ADCC_SUCCESS)

{

/* Success! */

}

else

{

/* Failure! */

}

For more information about the APIs, refer to Device Driver documentation and example codes in the Board Support Package (BSP).

APPLIES TO REVISION(S):

0.0

13. 17000050 - CRC On Over Voltage and Under Voltage DAC Are Incorrect:

DESCRIPTION:

The CRC values on the Over Voltage (OV) DAC and Under Voltage (UV) DAC are incorrect.

WORKAROUND:

Do not use CRC on the OV DAC or UV DAC.

APPLIES TO REVISION(S):

0.0

ADSP-CM411F/412F/413F/416F/417F/418F/419F

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Silicon Anomaly List

14. 17000055 - Flash Security Features Are Not Fully Operational:

DESCRIPTION:

All the security features and key management processes may be exercised. However, flash memory contents are not fully protected by

the security measures even if the part is locked. Security measures are planned to be fully functional in production silicon.

WORKAROUND:

None.

APPLIES TO REVISION(S):

0.0

15. 17000057 - PLL Malfunctions at Higher Frequencies:

DESCRIPTION:

The Clock Generation Unit (CGU) derives all the processor clocks from the phase-locked loop (PLL) voltage-controlled oscillator (VCO)

output, called PLLCLK. When PLLCLK is configured to operate at frequencies above 600 MHz, it may malfunction.

WORKAROUND:

Configure the processor PLL such that the PLLCLK frequency does not exceed 600 MHz.

For example, consider an application that requires a CCLK:SYSCLK ratio of 240:96, with a SYS_CLKIN of 24 MHz. Set CGU_CTL.MSEL = 20

(480 MHz), and adjust the divisors by setting CGU_DIV.CSEL = 2 and CGU_DIV.SYSSEL = 5. This ensures that the PLL clock frequency

does not exceed 600 MHz and the core clock/system clock frequency requirements are met.

APPLIES TO REVISION(S):

0.0

16. 17000059 - Security Keys for Devices Connected in a JTAG Chain Require Leading Zeroes:

DESCRIPTION:

When multiple ADSP-CM41x controllers are placed in a JTAG scan chain, the first part in the chain uses all 128 user debug security bits. For

all other parts, zeroes are appended with respect to the position of the part in the scan chain. This issue occurs when security keys are

provided through the TAPC security scan path.

For example, if three ADSP-CM41x parts are connected in series in the JTAG chain:

• The first part in the chain uses all 128 security bits ([127:0]).

• The second part in the chain uses 127 security bits ([127:1]). Bit 0 is set to 0.

• The third part in the chain uses 126 security bits ([127:2]). Bits 0 and 1 are both set to 0.

The example assumes that the parts are connected as individual JTAG controllers. The issue can also occur if multiple tap controllers are

enabled in the scan chain, resulting in multiple zeroes from each part, and when non-ADSP-CM41x devices are included in the scan chain.

WORKAROUND:

Use memory-mapped writes through the DAP instead of the TAPC security scan path to provide security keys.

APPLIES TO REVISION(S):

0.0

17. 17000060 - adi_rom_MemCopy() ROM API Leaves MDMA Enabled:

DESCRIPTION:

The adi_rom_MemCopy() function in the ROM does not disable the MDMA channels upon completion. This may result in MDMA errors

when the application attempts to reprogram the MDMA channels. This issue occurs with both ROM API and application code.

WORKAROUND:

Application code must manually disable the MDMA source and destination channels after calling the adi_rom_MemCopy() routine by

setting DMA12_CFG.EN = 0 and DMA13_CFG.EN = 0.

APPLIES TO REVISION(S):

0.0

ADSP-CM411F/412F/413F/416F/417F/418F/419F

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Silicon Anomaly List

18. 17000063 - System Watchpoint Units 3 and 4 Incorrectly Alias Master IDs:

DESCRIPTION:

SWU3 and SWU4 only monitor the 6 LSBs of the SWU ID instead of 9 bits. As a result, the Master ID of the masters that share the same 6

LSBs, but have different MSBs, are incorrectly aliased. The SWUs cannot exactly track the master write to the FFT (monitored by SWU3) or

SMC (monitored by SWU4).

Table 1 shows the SWU IDs with respect to various masters. The bits highlighted in the table are not monitored by the SWU. An "X" in the

table indicates "don't care".

Table 1: SWU3 and SWU4 Master IDs

ID Bits [8:0] Masters

00000X000 DMA4 (UART1_TX)

00000X001 DMA5 (UART1_RX)

00000X010 DMA6 (SPI1_TX/UART2_TX)

00000X011 DMA7 (SPI1_RX/UART2_RX)

00000X100 DMA8 (HAE_IN0/UART3_TX)

00000X101 DMA9 (HAE_OUT/UART3_RX)

00000X110 DMA10 (HAE_IN1/UART4_TX/SPORT0A)

00000X111 DMA11 (SPORT0B/UART4_RX)

01000X000 DMA12 (MDMA0_RD)

01000X001 DMA13 (MDMA0_WR)

10000X000 SINC

10000X001 ADCC0/DACC0

10000X010 FFT

11000X011 CONT_MST

11000X100 SUPER_MST

Table 2 shows the masters with ID bits [5:0] in common that are affected by this anomaly.

Table 2: SWU3 and SWU4 Aliased Master IDs

ID Bits [5:0] Aliased Masters

00X000 DMA4 (UART1_TX), DMA12 (MDMA0_RD), SINC

00X001 DMA5 (UART1_RX), DMA13 (MDMA0_WR), ADCC0/DACC0

00X010 DMA6 (SPI1_TX/UART2_TX), FFT

00X011 DMA7 (SPI1_RX/UART2_RX), CONT_MST (M4 Controller)

00X100 DMA8 (HAE_IN0/UART3_TX), SUPER_MST (M0 Master (DMA0: SPI0_TX, DMA1: SPI0_RX))

WORKAROUND:

None.

APPLIES TO REVISION(S):

0.0

ADSP-CM411F/412F/413F/416F/417F/418F/419F

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Silicon Anomaly List

19. 17000064 - Back-to-back Writes to Internal SRAM May Be Lost:

DESCRIPTION:

When back-to-back writes are performed to the same 32 KB bank of the internal SRAM, the first write may be lost if address bit 14 is

different (all other bits are the same) on the second write.

The figure shows an example where address bit 14 is different for two accesses.

WORKAROUND:

The following workarounds utilize memory placement strategies, where two consecutive write addresses are not 16 KB apart.

For core-based accesses, the anomaly can occur on adjacent writes on the same bus between a local and global variable with addresses

16 KB apart and in the same bank.

In this case, the workaround is to use linker segments for code and variables to segregate them in a single 16 KB bank. If the total size is

greater than 16 KB, place the variables in a separate 32 KB bank.

For DMA-based accesses, there are several cases to consider:

1. If DMA requires less than 16 KB of data space or DMA requires between 16 KB and 32 KB of data space, but less than 16 KB for DMA

writes, the workaround is to place the segregated write buffers either at the top or bottom half of the 32 KB bank. Ensure that the

writable DMA data regions and read-only DMA data regions are in different half banks. Core-writable variables may be placed in the

other half of the 32 KB bank that contains read-only DMA regions.

The figure shows the memory placement when DMA and Core write buffers are less than 16 KB.

2. If DMA requires more than 16 KB but less than 32 KB for writes, and DMA writes are a single linear stream, the workaround is to place

the write data buffer in a single bank that has data in both halves of the bank. This issue does not exist in case of a linear addressed

DMA.

If DMA writes are not sequential and ordered and the DMA buffer requires more than 16 KB, the region must start from the higher

half of the bank and continue into the lower half of the next bank. Core-writable variables may be placed in the other half of the 32

KB bank that contains read-only DMA regions.

The figure shows the memory placement when DMA write buffers are between 16 KB and 32 KB.

ADSP-CM411F/412F/413F/416F/417F/418F/419F

NR004483C | Page 9 of 12 | July 2017

Silicon Anomaly List

3. If DMA requires more than 32 KB for writes, ensure that the writes are linear. This issue does not exist in case of a linear addressed

DMA.

4. If Read-only DMA buffer has to be initialized, the code and variables of the function performing the initialization must reside in a

separate 32 KB bank.

For DMA-based accesses, a high DMA latency value (M4P_SRAM_CFG_DMAMAXLAT) decreases the probability of writes getting lost

when back-to-back writes are performed to SRAM.

APPLIES TO REVISION(S):

0.0

20. 17000066 - Manual ECC Error Diagnostic Testing of Flash Memory Is Not Functional:

DESCRIPTION:

The FLC_CTL.MECC bit is intended to induce a Flash ECC error. This bit is not functional.

WORKAROUND:

None.

APPLIES TO REVISION(S):

0.0

ADSP-CM411F/412F/413F/416F/417F/418F/419F

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Silicon Anomaly List

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