AWR2944 datasheet(80/93 Pages) TI

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Table 10-1. Monitoring and Diagnostic Mechanisms for AWR294x (continued)

FEATURE

DESCRIPTION

End to End ECC for BIST R4F TCM

Memories, Mailbox

BIST R4F TCMs, Mailbox diagnostic is supported by Single error correction double

error detection (SECDED) ECC diagnostic. Single bit error is communicated to the BIST

R4FCPU while double bit error is communicated to MSS R5F as an interrupt so that

application code becomes aware of this and takes appropriate action.

BIST R4F TCM bit multiplexing

Logical TCM word and its associated ECC code is split and stored in two physical SRAM

banks. This scheme provides an inherent diagnostic mechanism for address decode

failures in the physical SRAM banks and helps to reduce the probability of physical multi-

bit faults resulting in logical multi-bit faults.

Temperature Sensors

Device architecture supports various temperature sensors all across the device (next

to power hungry modules such as PAs, etc) which is monitored during the inter-frame

period(1).

Tx Power Monitors

Device architecture supports power detectors at the Tx output(2).

Synthesizer (Chirp) frequency

monitor

Monitors Synthesizer’s frequency ramp by counting (divided-down) clock cycles and

comparing to ideal frequency ramp. Excess frequency errors above a certain threshold,

if any, are detected and reported.

Ball break detection for TX ports

(TX Ball break monitor)

Device architecture supports a ball break detection mechanism based on Impedance

measurement at the TX output(s) to detect and report any large deviations that can

indicate a ball break.

Monitoring is done by TIs code running on BIST R4F and failure is reported to the MSS

R5F via Mailbox.

It is completely up to customer SW to decide on the appropriate action based on the

message from BIST R4F

RX loopback test

Built-in TX to RX loopback to enable detection of failures in the RX path(s), including Gain,

inter-RX balance, etc. This monitor also covers ball breaks on the RX pins.

IF loopback test

Built-in IF (square wave) test tone input to monitor IF filter’s frequency response and

detect failure.

RX saturation detect

Provision to detect ADC saturation due to excessive incoming signal level and/or

interference.

(1)

Monitoring is done by the TI's code running on BIST R4F. There are two modes in which it could be configured to report the

temperature sensed via API by customer application.

Report the temperature sensed after every N frames

Report the condition once the temperature crosses programmed threshold.

It is completely up to customer SW to decide on the appropriate action based on the message from BIST R4Fvia Mailbox.

(2)

Monitoring is done by the TI's code running on BIST R4F.

There are two modes in which it could be configured to report the detected output power via API by customer application.

Report the power detected after every N frames

Report the condition once the output power degrades by more than configured threshold from the configured.

It is completely up to customer SW to decide on the appropriate action based on the message from BIST R4F.

AWR2944

SWRS273 – NOVEMBER 2021

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