mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 483

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

FDBASE—Function Descriptor Table Base Address
This index pointer defines the location in system memory where the function descriptor
starts. However, you must initialize it.
FD_PTR—Function Descriptor Pointer
This pointer points to the current function descriptor address. It is only used by the RISC
microcontroller, so you do not need to modify it in any way.
DSTATE—Current State
This bit defines the internal state of the RISC microcontroller. It is only used by the RISC
microcontroller, so you do not need to modify it in any way.
DSTATUS—Current Function Descriptor Status
This bit defines the current status of the current function descriptor. It is only used by the
RISC microcontroller, so you do not need to modify it in any way.
NOTE: You are only responsible for initializing the items in bold.
DSP Base + 0x0C to 0x0F
DSP Base + 0x1C
DSP Base + 0x1A
DSP Base + 0x1E
DSP Base + 0x00
DSP Base + 0x04
DSP Base + 0x08
DSP Base + 0x10
DSP Base + 0x12
DSP Base + 0x14
DSP Base + 0x16
DSP Base + 0x18
DSP Base + 0x20
DSP Base + 0x22
DSP Base + 0x24
DSP Base + 0x26
DSP Base + 0x28
DSP Base + 2A
ADDRESS
DSP Base = (IMMR & 0xFFFF0000) + 0x3EC0 (DSP1) and 0x3FC0 (DSP2).
Table 16-7. DSP Parameter RAM Memory Map
Freescale Semiconductor, Inc.
DSTATUS
FDBASE
DSTATE
FD_PTR
CBASE
NAME
For More Information On This Product,
XPTR
YPTR
RES
TAP
—
—
—
—
—
M
N
K
I
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
Half-word
WIDTH
Word
Word
Word
Word
Current Function Descriptor Pointer to Output Buffer Pointer
Current Function Descriptor Pointer to Sample Pointer
Current Function Descriptor Coefficient Buffer Pointer
Current Function Descriptor Coefficient Buffer Size-1
Current Function Descriptor Sample Buffer Pointer
Current Function Descriptor Sample Buffer Size-1
Current Function Descriptor Sample Buffer Size-1
Current Function Descriptor Output Buffer Pointer
Current Function Descriptor Number of Iterations
Current Function Descriptor Output Buffer Size-1
Current Function Descriptor Output Buffer Size-1
Current Function Descriptor Number of TAPs
Current Function Descriptor Cbase Pointer
Function Descriptor Table Base Address
Current Function Descriptor Status
Function Descriptor Pointer
Communication Processor Module
DESCRIPTION
DSP State
Reserved
16-31