ADSP-214xx SHARC Processor Hardware Reference 2-9
I/O Processor
Miscellaneous External Port Parameter registers. These registers, shown
in Table 2-8, used for the delay line and scatter/gather DMA to read from
tap list buffers, store counters and index pointers.
MLB Parameter registers. Note that the MLB interface does not have spe-
cific parameter registers like the other peripherals. Instead it has many
control registers whereby the base and offset addresses for a specific chan-
nel gets defined. For more information, see Chapter 8, Media Local Bus.
Table 2-7. Length Registers
Register Name Width (Bits) Description
ILFIR 19 Accelerator FIR input
OLFIR 19 Accelerator FIR output
ILIIR 19 Accelerator IIR input
OLIIR 19 Accelerator IIR output
ILFFT 19 Accelerator FFT input
OLFFT 19 Accelerator FFT output
ELEP0–1 26 External Port (external base)
Table 2-8. Miscellaneous External Port Parameter Registers
Register Name Width (Bits) Description
RCEP 16 Delay line DMA read block size
RIEP 19 Delay line DMA read internal index
RMEP 27 Delay line DMA read external modifier
TCEP 16 Delay line DMA tap list count
TPEP 19 Delay line DMA tap list pointer
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