56F8322 datasheet(38/136 Pages) FREESCALE

38 / 136 page

56F8322 Techncial Data, Rev. 16

Freescale Semiconductor

Preliminary

4.6 EOnCE Memory Map

4.7 Peripheral Memory Mapped Registers

On-chip peripheral registers are part of the data memory map on the 56800E series. These locations may

be accessed with the same addressing modes used for ordinary Data memory, except all peripheral

registers should be read/written using word accesses only.

Table 4-7 summarizes base addresses for the set of peripherals on the 56F8322 and 56F8122 devices.

Peripherals are listed in order of the base address.

Table 4-6 EOnCE Memory Map

Address

Reserved

X:$FF FF8A

OESCR

External Signal Control Register

Reserved

X:$FF FF8E

OBCNTR

Breakpoint Unit [0] Counter

Reserved

X:$FF FF90

OBMSK (32 bits)

Breakpoint 1 Unit [0] Mask Register

X:$FF FF91

—

Breakpoint 1 Unit [0] Mask Register

X:$FF FF92

OBAR2 (32 bits)

Breakpoint 2 Unit [0] Address Register

X:$FF FF93

—

Breakpoint 2 Unit [0] Address Register

X:$FF FF94

OBAR1 (24 bits)

Breakpoint 1 Unit [0] Address Register

X:$FF FF95

—

Breakpoint 1 Unit [0] Address Register

X:$FF FF96

OBCR (24 bits)

Breakpoint Unit [0] Control Register

X:$FF FF97

—

Breakpoint Unit [0] Control Register

X:$FF FF98

OTB (21-24 bits/stage)

Trace Buffer Register Stages

X:$FF FF99

—

Trace Buffer Register Stages

X:$FF FF9A

OTBPR (8 bits)

Trace Buffer Pointer Register

X:$FF FF9B

OTBCR

Trace Buffer Control Register

X:$FF FF9C

OBASE (8 bits)

Peripheral Base Address Register

X:$FF FF9D

OSR

Status Register

X:$FF FF9E

OSCNTR (24 bits)

Instruction Step Counter

X:$FF FF9F

—

Instruction Step Counter

X:$FF FFA0

OCR (bits)

Control Register

Reserved

X:$FF FFFC

OCLSR (8 bits)

Core Lock / Unlock Status Register

X:$FF FFFD

OTXRXSR (8 bits)

Transmit and Receive Status and Control Register

X:$FF FFFE

OTX / ORX (32 bits)

Transmit Register / Receive Register

X:$FF FFFF

OTX1 / ORX1

Transmit Register Upper Word

Receive Register Upper Word

56F8322 Datasheet(PDF) 38 Page - Freescale Semiconductor, Inc

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