System Control Coprocessor

 

 

 

Table 4-55 Build Options 2 Register (continued)

 

 

 

Bits

Field

Function

 

 

 

[25:24]

BTCM_ES

Indicates whether an error scheme is implemented on the BTCM interface(s):

 

 

00 = no error scheme

 

 

01 = 8-bit parity logic

 

 

10 = 32-bit error detection and correction

 

 

11 = 64-bit error detection and correction.

 

 

 

[23]

NO_IE

Indicates whether the processor supports big-endian instructions:

 

 

0

= processor supports big-endian instructions

 

 

1

= processor does not support big-endian instructions.

 

 

 

[22]

NO_FPU

Indicates whether the processor contains a floating point unit:

 

 

0

= processor contains a floating point unit

 

 

1

= processor does not contain a floating point unit.

 

 

 

[21]

NO_MPU

Indicates whether the processor contains a Memory Protection Unit (MPU):

 

 

0

= processor contains an MPU

 

 

1

= processor does not contain an MPU.

 

 

 

[20]

MPU_REGIONS

Indicates the number of regions in the included MPU:

 

 

0

= 8

 

 

1

= 12.

 

 

If the processor does not contain an MPU (bit [21] set to 0), this bit is set to 0.

 

 

 

[19:17]

BREAK_POINTS

Indicates the number of break points implemented in the processor, minus 1.

 

 

 

[16:14]

WATCH_POINTS

Indicates the number of watch points implemented in the processor, minus 1.

 

 

 

[13]

NO_A_TCM_INF

Indicates whether the processor contains an ATCM port:

 

 

0

= processor contains ATCM port

 

 

1

= processor does not contain ATCM port.

 

 

 

[12]

NO_B0_TCM_INF

Indicates whether the processor contains a B0TCM port:

 

 

0

= processor contains B0TCM port

 

 

1

= processor does not contain B0TCM port.

 

 

 

[11]

NO_B1_TCM_INF

Indicates whether the processor contains a B1TCM port:

 

 

0

= processor contains B1TCM port

 

 

1

= processor does not contain B1TCM port.

 

 

 

[10]

TCMBUSPARITY

Indicates whether the processor contains TCM address bus parity logic:

 

 

0

= processor does not contain TCM address bus parity logic

 

 

1

= processor contains TCM address bus parity logic.

 

 

 

[9]

NO_SLAVE

Indicates whether the processor contains an AXI slave port:

 

 

0

= processor contains an AXI slave port

 

 

1

= processor does not contain an AXI slave port.

 

 

 

[8:7]

ICACHE_ES

Indicates whether an error scheme is implemented for the instruction cache:

 

 

00 = no error scheme

01 = 8-bit parity error detection

11 = 64-bit error detection and correction.

If the processor does not contain an i-cache, these bits are set to 00.

ARM DDI 0363E

Copyright © 2009 ARM Limited. All rights reserved.

4-74

ID013010

Non-Confidential, Unrestricted Access

 

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Image 158
ARM r1p3 Btcmes, Noie, Nofpu, Nompu, Mpuregions, Breakpoints, Watchpoints, Noatcminf, NOB0TCMINF, NOB1TCMINF, Tcmbusparity