ARM ARM DUI 0224I manual PrimeCell Modifications, Aaci implementation

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Programmer’s Reference

4.5Advanced Audio CODEC Interface, AACI

The PrimeCell Advanced Audio CODEC Interface (AACI) is an AMBA compliant SoC peripheral that is developed, tested, and licensed by ARM Limited.

 

Table 4-22 AACI implementation

 

 

Property

Value

 

 

Location

FPGA (the CODEC is an external LM4549).

 

 

Memory base address

0x10004000

 

 

Interrupt

24 on secondary controller.

 

 

DMA

Selectable as channel 0,1, or 2. See DMA peripheral map

 

registers, SYS_DMAPSRx on page 4-37.

 

 

Release version

ARM AACI PL041 r1p0 (256 FIFO depth in compact mode).

 

 

Reference documentation

ARM PrimeCell Advanced Audio CODEC Interface (PL041)

 

Technical Reference Manual and National Semiconductor

 

LM4549 Data Sheet. See also changed PrimeCell ID listed in

 

Table 4-23 on page 4-43 and Advanced Audio Codec Interface,

 

AACI on page 3-56.

 

 

4.5.1PrimeCell Modifications

The AACI PrimeCell in the PB926EJ-S has a different FIFO depth than the standard PL041. Therefore, the AACIPeriphID3 register contains the values listed in Table 4-23 on page 4-43.

Figure 4-20 AACI ID register

4-42

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ARM DUI 0224I

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ARM ARM DUI 0224I manual PrimeCell Modifications, Aaci implementation