Chapter 10 Memory Subsystem.pdf
Chapter 10 Memory Subsystem.pdf
Chapter 10 Memory Subsystem.pdf
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Public Version<br />
www.ti.com SDRAM Controller (SDRC) <strong>Subsystem</strong><br />
Bits Field Name Description Type Reset<br />
<strong>10</strong> UNEXPECTEDADD Request targeting non-defined rotation contexts (such as contexts RW 0x0<br />
12, 13, 14, or 15) or non-defined L3 Interconnect request signals<br />
used for context number decoding.<br />
Read 0x0: No unexpected request received<br />
Write 0x0: No effect<br />
Read 0x1: A request has been received on the interconnect with<br />
address decoding targeting rotation contexts 12, 13, 14, or 15, or a<br />
signal used for context number decoding was undefined.<br />
Write 0x1: Clear UNEXPECTEDADD bit.<br />
9 UNEXPECTEDREQ Unexpected request received during SMS idle state RW 0x0<br />
Read 0x0: No unexpected request received<br />
Write 0x0: No effect<br />
Read 0x1: A request has been received on the interconnect after the<br />
SMS was put in idle mode by the system power manager.<br />
Write 0x1: Clear the UNEXPECTEDREQ bit field.<br />
8 ILLEGALCMD Illegal command on the L3 interface RW 0x0<br />
Read 0x0: No illegal command received<br />
Write 0x0: No effect<br />
Read 0x1: Illegal command has been received.<br />
Write 0x1: Clear ILLEGALCMD bit field.<br />
7:4 RESERVED Write 0s for future compatibility. RW 0x0<br />
Read returns 0s.<br />
3 ERRORSECOVERLAP Protection region overlapping error RW 0x0<br />
Read 0x0: No overlap violation detected<br />
Write 0x0: No effect<br />
Read 0x1: A protection region overlap violation has been detected.<br />
Write 0x1: Clear ERRORSECOVERLAP bit field.<br />
2 RESERVED Reserved for non-GP devices. RW 0x0<br />
1 RESERVED Reserved for non-GP devices. RW 0x0<br />
0 ERRORVALID Error validity status - Must be explicitly cleared with a write RW 0x0<br />
transaction<br />
SDRAM Controller (SDRC) <strong>Subsystem</strong><br />
• Violation Reporting: [0]<br />
• Error Logging: [1] [2]<br />
• SMS Register Summary: [3]<br />
Read 0x0: No effect<br />
Write 0x0: All error fields no longer valid<br />
Read 0x1: Error detected and logged in the other error fields<br />
Write 0x1: Clear ERRORVALID bit field<br />
Table <strong>10</strong>-142. Register Call Summary for Register SMS_ERR_TYPE<br />
SPRUGN4L–May 20<strong>10</strong>–Revised June 2011 <strong>Memory</strong> <strong>Subsystem</strong><br />
Copyright © 20<strong>10</strong>–2011, Texas Instruments Incorporated<br />
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