AM625: Difference between MAC ID and MAC ID Proxy register

Hello Tony, 

I checked the use case internally and the above explanation seems Ok.

As i understand, The Idea of Proxy registers was to have the capability of sharing MMR registers across cores.

Regards,

Sreenivasa

Hello Tony, 

Pls refer additional into that will be published in AM64 TRM for now and may be updated later on the AM62.

5.1.1.3.1.3 Proxy Addressing Registers The CTRL_MMR0 memory space is divided into several partitions. There are Kick and Proxy registers associated with each partition. This section describes the Proxy registers. For information about the Kick registers see Section 5.1.1.3.1.2.

The CTRL_MMR0 module has several registers that provide proxy addressing. This means, each of its registers may be accessed through two different addresses - Proxy0 and Proxy1. The Proxy0 address is intended as the normal read and write access address. The Proxy1 address provides exclusive register write control. When a bit from the Px_CLAIMy[31-0] PROXY1_CLAIMED, field is set to 1h, a register becomes read-only at its Proxy0 address and may only be written through its Proxy1 address.

The Proxy registers themselves may always be read through their Proxy0 address but may only be written through their Proxy1 address. The x and y indices can be calculated through the following equations:

• x = INT(HEX2DEC(address_offset)/16384))

• y = INT(MOD(HEX2DEC(address_offset),16384)/128)

where:

• INT() rounds down to the nearest integer

• HEX2DEC() converts from hexadecimal to decimal

• MOD() returns the reminder of HEX2DEC(address_offset)/16384

Regards,

Sreenivasa