Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

MC68340 Datasheet(PDF) 202 Page - Freescale Semiconductor, Inc

Part # MC68340
Description  Integrated Processor with DMA User?셲 Manual
PDF  441 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC68340 Datasheet(HTML) 202 Page - Freescale Semiconductor, Inc

Back Button MC68340 Datasheet HTML 198Page - Freescale Semiconductor, Inc MC68340 Datasheet HTML 199Page - Freescale Semiconductor, Inc MC68340 Datasheet HTML 200Page - Freescale Semiconductor, Inc MC68340 Datasheet HTML 201Page - Freescale Semiconductor, Inc MC68340 Datasheet HTML 202Page - Freescale Semiconductor, Inc MC68340 Datasheet HTML 203Page - Freescale Semiconductor, Inc MC68340 Datasheet HTML 204Page - Freescale Semiconductor, Inc MC68340 Datasheet HTML 205Page - Freescale Semiconductor, Inc MC68340 Datasheet HTML 206Page - Freescale Semiconductor, Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 202 / 441 page
background image
MOTOROLA
MC68340 USER’S MANUAL
5- 65
memory access. Off-chip address comparators will not detect breakpoints on internal
accesses unless show cycles are enabled. Breakpoints on prefetched instructions, which
are flushed from the pipeline before execution, are not acknowledged, but operand
breakpoints are always acknowledged. Acknowledged breakpoints can initiate either
exception processing or BDM. See 5.5.2.6 Hardware Breakpoints for more information.
5.6.2 Background Debug Mode
BDM is an alternate CPU32 operating mode. During BDM, normal instruction execution is
suspended, and special microcode performs debugging functions under external control.
Figure 5-20 is a BDM block diagram.
BDM can be initiated in several ways—by externally generated breakpoints, by internal
peripheral breakpoints, by the background instruction (BGND), or by catastrophic
exception conditions. While in BDM, the CPU32 ceases to fetch instructions via the
parallel bus and communicates with the development system via a dedicated, high-speed,
SPI-type serial command interface.
.
. . ....
SEQUENCER
MICROCODE
SERIAL
INTERFACE
BUS
CONTROL
IRC
BERR
BKPT
EXECUTION
UNIT
IPIPE/DSO
IFETCH/DSI
DATA BUS
BERR
BKPT/DSCLK
ADDRESS BUS
IRB
BERR
BKPT
IR
BERR
BKPT
FREEZE
Figure 5-20. BDM Block Diagram
5.6.2.1 ENABLING BDM. Accidentally entering BDM in a nondevelopment environment
could lock up the CPU32 since the serial command interface would probably not be
available. For this reason, BDM is enabled during reset via the
BKPT signal.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com