4.4.1. PrimeCell Modifications

The AACI PrimeCell in the baseboard has a different FIFO depth than the standard PL041. Therefore, the AACIPeriphID3 register contains the values listed in Table 4.30.

Figure 4.16. AACI ID register

AACI ID register

Table 4.30. Modified AACI PeriphID3 register

BitAccessDescription
[31:8]-Not used.
[7:6]-

Reserved. Use read-modify-write to preserve value.

[5:3]Read-only

FIFO depth in compact mode:

b000 8
b001 16
b010 32
b011 64
b100 128
b101 256 (default)
b110 512 
b111 1024
[2:0]Read-only

Number of channels:

b000 4
b001 1 (default)
b010 2
b011 3
b100 4
b101 5
b110 6
b111 7

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