ARM NIC-301 User Manual

ARM DDI 0397G

3-3

ID031010

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.

 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.

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.

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