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Docs: define values for CVXIF in 60x and 65x configuration (#2721)

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Set values for X_NUM_RS in embedded configurations to 2.

Co-authored-by: JeanRochCoulon <jean-roch.coulon@thalesgroup.com>
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Guillaume Chauvon 2025-01-21 17:06:26 +01:00 • committed by GitHub
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39
docs/design/design-manual/source/CVX_Interface_Coprocessor.adoc
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@ -61,50 +61,65 @@ Supported Parameters
The following table presents CVXIF parameters supported by CVA6.
[cols=",,",options="header",]
[cols=",a,a",options="header",]
|=============================================
|Signal |Value |Description
|*X_NUM_RS* |int: 2 or 3 (configurable) a|
|*X_NUM_RS* |
int: 2 or 3 (configurable) +
* CV32A60X: 2
* CV32A65X: 2
|
[verse]
--
Number of register file read ports that can
be used by the eXtension interface
--
|
|*X_ID_WIDTH* |int: 3 a|
|*X_ID_WIDTH* |
int: 1 to 32 +
* CV32A60X: 2
* CV32A65X: 3
|
[verse]
--
Identification width for the eXtension
interface
--
|
|*X_MEM_WIDTH* |n/a (feature not supported) a|
|*X_MEM_WIDTH* |n/a (feature not supported) |
[verse]
--
Memory access width for loads/stores via the
eXtension interface
--
|
|*X_RFR_WIDTH* |int: `XLEN` (32 or 64) a|
|*X_RFR_WIDTH* |
int: `XLEN` (32 or 64) +
* CV32A60X: 32
* CV32A65X: 32
|
[verse]
--
Register file read access width for the
eXtension interface
--
|
|*X_RFW_WIDTH* |int: `XLEN` (32 or 64) a|
|*X_RFW_WIDTH* |
int: `XLEN` (32 or 64) +
* CV32A60X: 32
* CV32A65X: 32
|
[verse]
--
Register file write access width for the
eXtension interface
--
|
|*X_MISA* |logic[31:0]: 0x0000_0000 a|
|*X_MISA* |logic[31:0]: 0x0000_0000 |
[verse]
--
MISA extensions implemented on the eXtension