9.13. Interface register block

The interface register block has a header with type 0x0000C000, version 0x00000100, and indicates the number of interfaces present and where they are located in the control register space.

Address	Field	31..24	23..16	15..8	7..0	Reset value
RBB+0x00	Type	Vendor ID		Type		RO 0x0000C000
RBB+0x04	Version	Major	Minor	Patch	Meta	RO 0x00000100
RBB+0x08	Next pointer	Pointer to next register block				RO -
RBB+0x0C	Offset	Offset to first interface				RO -
RBB+0x10	Count	Interface count				RO -
RBB+0x14	Stride	Interface stride				RO -
RBB+0x18	CSR offset	Interface CSR offset				RO -

See Register blocks for definitions of the standard register block header fields.

Offset

The offset field contains the offset to the start of the first interface region, relative to the start of the current region.

Address	31..24	23..16	15..8	7..0	Reset value
RBB+0x0C	Offset to first interface				RO -

Count

The count field contains the number of interfaces.

Address	31..24	23..16	15..8	7..0	Reset value
RBB+0x10	Interface count				RO -

Stride

The stride field contains the size of the region for each interface.

Address	31..24	23..16	15..8	7..0	Reset value
RBB+0x14	Interface stride				RO -

CSR offset

The CSR offset field contains the offset to the head of the register block chain inside of each interface’s region.

Address	31..24	23..16	15..8	7..0	Reset value
RBB+0x18	Interface CSR offset				RO -