ARM AMBA NIC-301 - Manual (Page 41)

Programmers Model
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3.2 Configuration programmers model
The AMBA Network Interconnect can contain configuration registers, partitioned into a number
of individual 4KB blocks that you can program using the GPV. The base address of each GPV
region is set at configuration time in AMBA Designer (ADR-301).
You can configure any slave interface to have access to all of the registers in the programmers
view.
Note
Any registers that a switch requires are implemented within the register block of the associated
Interface Block (IB) register block. If no IB is attached, then you can configure an IB to
specifically provide programmable registers.
Ensure that you access the Global Programmers View (GPV) using non-cacheable transactions.
3.2.1 Register block types
The following types of register block exist:
•
one register block for each AMBA Network Interconnect configuration
• one register block for each IB, where the IB can be:
—
AXI Slave Interface Block (ASIB), see Table 3-1 on page 3-4
— AXI Master Interface Block (AMIB), see Table 3-2 on page 3-5
— AXI internal network Interface Block (IB), see Table 3-3 on page 3-6.
Figure 3-1 shows the address map of the programmers model. It contains one fixed base
address, and all the other programmers model 4KB blocks are stacked.
Figure 3-1 Address map of the programmers model
Slave interface m registers
Slave interface 2 registers
Slave interface 1 registers
Slave interface 0 registers
Master interface n registers
Master interface 2 registers
Master interface 1 registers
Master interface 0 registers
ID registers
Address control registers
Maximum m = 127
Maximum n = 63
0x000C2000
0x000C1000
0x00042000
0x00044000
0x00043000
0x00041000
0x00003000
0x00002000
0x00001000
0x00000000 Configurable base address
0x00004000
Internal interface 0 registers
Internal interface 1 registers
Internal interface 2 registers
Internal interface p registers
0x000C3000
0x000C4000
0x000FF000
Maximum p = 61
Address offset
from base
0x00100000