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DSP56857 Datasheet(PDF) 97 Page - Freescale Semiconductor, Inc

Part # DSP56857
Description  Digitial Signal Controller
PDF  662 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

DSP56857 Datasheet(HTML) 97 Page - Freescale Semiconductor, Inc

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Memory Maps
Overview, Rev. 4
Freescale Semiconductor
3-9
Note:
The X (data) address space for all parts is actually 24 bits ($000000 - $FFFFFF) but
only 21 bits are brought out externally. The chip selects can be programmed to allow
data accesses above $1FFFFF. In this case the data space can be thought of as multiple
2M word pages.
3.3.1 Memory Register Summary
This summary lists all accessible EOnCE Memory mapped registers in the 5685x devices, in
Table 3-1. The Peripheral System Configurations are listed in Table 3-15.
3.3.1.1 Memory Mapped Registers
Table 3-1 lists all of the EOnCE Memory mapped registers in the 5685x devices. Please consult
the DSP56800E Reference Manual (DSP56800ERM) for complete details of the following table.
Table 3-1. EOnCE Memory Map (EOnCE_BASE = $FFFF00)
Address Offset
Register Acronym
Register Name
Base + $FF
OTX1/ORX1
Transmit Register Upper Word
Receive Register Upper Word
Base + $FE
OTX/ORX
Transmit Register
Receive Register
Base + $FD
OTXRXSR
Transmit /Receive Status/ Control Reg.
Base + $FC
OCLSR
Core Lock/Unlock Status Register
Reserved
Base + $A0
OCR
Control Register
Base + $9F
—
Instruction Step Counter
Base + $9E
OSCNTR
Instruction Step Counter
Base + $9D
OSR
Status Register
Base + $9C
OBASE
Peripheral Base Address Register
Base + $9B
OTBCR
Trace Buffer Control Register
Base + $9A
OTBPR
Trace Buffer Pointer Register
Base + $99
—
Trace Buffer Register Stages
Base + $98
OTB
Trace Buffer Register Stages
Base + $97
—
Breakpoint Unit [0] Control Register
Base + $96
OBCR
Breakpoint Unit [0] Control Register
Base + $95
—
Breakpoint 1 Unit [0] Address Register
Base + $94
OBAR1
Breakpoint 1 Unit [0] Address Register
Base + $93
—
Breakpoint 2 Unit [0] Address Register
Base + $92
OBAR2
Breakpoint 2 Unit [0] Address Register
Base + $91
—
Breakpoint 1 Unit [0] Mask Register
Base + $90
OBMSK
Breakpoint 1 Unit [0] Mask Register



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