mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 489

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

16.3.3.5.2 DSP Programming Example (Core and CPM). Figure 16-11 illustrates the
organization of the data buffer and function descriptor data in system memory and dual-port
RAM. The function descriptor resides in system memory and all input, ouput, and coefficient
data must reside in dual-port RAM. The transmit and modulation function descriptor chain
can reside in either system memory or dual-port RAM.
OUTPUT
BUFFER
OUTPUT
BUFFER
DUAL-PORT RAM
Figure 16-11. Core and CPM Implementation
Freescale Semiconductor, Inc.
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OUTPUT POINTER
OUTPUT POINTER
BUFFER
MOD TABLE PTR
INPUT
INPUT POINTER
INPUT POINTER
MPC823 REFERENCE MANUAL
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TABLE
MOD
COEFF
TABLE
Communication Processor Module
# OF ITTERATIONS
# OF ITTERATIONS
OUT BUFFER SIZE
OUT BUFFER SIZE
MODULATION FD
SYSTEM MEMORY
MOD TABLE SIZE
IN BUFFER SIZE
OPCODE = MOD
OPCODE = FIR2
IN BUFFER SIZE
COEFF BASE
TX FILTER FD
# OF TAPS
XYPTR
XYPTR
MPTR
16-37