Specifications

Programmers Model

ID052914 Non-Confidential

4.5 IO Peripherals and interfaces

This section describes the following peripherals and interfaces in the memory map:

• Advanced Audio CODEC Interface

• Color LCD Controller on page 4-27

• Compact Flash interface on page 4-29

• Ethernet on page 4-30

• Keyboard and Mouse Interface, KMI on page 4-32

• MultiMedia Card Interface, MCI on page 4-32

• Real Time Clock, RTC on page 4-33

• Two-wire serial bus interface, SBCon on page 4-34

• Timers on page 4-36

• UART on page 4-37

• USB interface on page 4-39

• Watchdog on page 4-40.

4.5.1 Advanced Audio CODEC Interface

The PL041 PrimeCell Advanced Audio CODEC Interface (AACI) is an AMBA

-compliant SoC

peripheral that is developed, tested, and licensed by ARM. Table 4-21 shows the AACI

implementation.

PrimeCell Modifications

The AACI PrimeCell in the motherboard FPGA has a different FIFO depth than the standard

PL041. Figure 4-15 on page 4-27 shows the register bit assignments.

Table 4-21 AACI implementation

Property Value

Location Motherboard IO FPGA

Memory base address • ARM Legacy memory map:

— SMB CS7 base address +

0x4000

•ARM Cortex-A Series memory map:

— SMB CS3 base address +

Ox40000

Interrupt 11

DMA mapping See Table 4-14 on page 4-18.

Release version ARM AACI PL041 r0p0, modified to one channel and 256 FIFO depth in compact mode, and 512 FIFO

depth in non-compact mode.

Platform Library support No support provided.

Reference documentation

ARM

PrimeCell Advanced Audio CODEC Interface (PL041) Technical Reference Manual and National

Semiconductor LM4549 Data Sheet. See also the Modified AACI PeriphID3 register Table 4-22 on

page 4-27.