Motorola DSP56301 User Manual

Page 135

DSP-Side Operating Modes

Host Interface (HI32)

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never changed. Therefore the upper 16 bits of the base address are written to every register
location, in this example.

Example 6-3. Self-Configuration Procedure for PCI Mode

Example 6-4. Self-Configuration Procedure for Universal Bus Mode

M_DCTR equ DCTR_ADDR ; HI32 via programmed address :$5

M_DPMC equ DPMC_ADDR ; HI32 via programmed address :$6

M_DPAR equ DPAR_ADDR ; HI32 via programmed address :$8

movep #$500000,x:M_DCTR ; enter self configuration mode

movep #BASE_ADDRESS,x:M_DPMC ; CBMA Data (location $10)

movep #CCMR_DATA,x:M_DPAR ; write CSTR & CCMR (location $04)

movep #$0,x:M_DPAR ; dummy write to location $08

movep #CLAT_DATA,x:M_DPAR ; write CLAT (location $0C)

movep #$0,x:M_DPAR ; write CBMA (location $10)

movep #>$012345,x:M_DPMC ; set SIDR value to $2345

movep #>$6789ab,x:M_DPAR ; set SVID value to $89ab and write

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