EP1330726A2 - Datenpfadanordnung - Google Patents
DatenpfadanordnungInfo
- Publication number
- EP1330726A2 EP1330726A2 EP01987921A EP01987921A EP1330726A2 EP 1330726 A2 EP1330726 A2 EP 1330726A2 EP 01987921 A EP01987921 A EP 01987921A EP 01987921 A EP01987921 A EP 01987921A EP 1330726 A2 EP1330726 A2 EP 1330726A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- output
- input
- register
- arrangement
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
- G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
- G06F9/3885—Concurrent instruction execution, e.g. pipeline or look ahead using a plurality of independent parallel functional units
Definitions
- the invention relates to an arrangement of data paths of a CPU architecture, an RFU (register file unit) being connected to a link unit and this in turn being connected to a functional unit.
- linking unit With such a linking unit, different functional units are switched, which are arranged within a CPU architecture.
- the invention is based on the object of enabling functional expansions in the CPU architecture without having to significantly increase or otherwise design the networking effort of the linking unit which is arranged between the functional units and the controlling registers of the CPU.
- This linking unit consists of a processor bus arrangement, at least one input register assigned to the functional unit and at least one output register assigned to the functional unit.
- the processor bus arrangement is at least indirectly connected to an input of the input register and at least indirectly to an output of the output register.
- This input-side and output-side buffering of the respective functional unit enables data processing in the functional units to be carried out independently of the changing data content of the fast and complex switching processor bus arrangement.
- the desired data linkage can be realized as far as possible, without having to operate any additional effort, for example through the use of further multiplexers.
- An important embodiment of the solution to the problem according to the invention provides that a bus extension is connected between the processor bus arrangement, the input register and the output register. It is taken into account here that the data to be processed of the functional units of the CPU structure take place largely simultaneously or in parallel. This enables them to be loaded with data using a simplified and remote bus expansion.
- An advantageous embodiment of the solution of the task according to the invention provides that a first input link logic is connected between the bus extension and the input register. This advantageously realizes that simply structured logic, such as multiplexers for half Word processing or operators for barrel shifting or saturation for the purpose of hardware optimization can be arranged distributed within such an input link logic.
- a further advantageous embodiment of the solution to the problem according to the invention provides that a second input link logic is connected between the input register and an input of the functional unit.
- this solution preferably combines data that must be processed recursively.
- a special embodiment of the solution of the task according to the invention provides that an output link logic is connected between the functional unit and the output register.
- the intermediate results are preferably generated and made available for recursion.
- a further embodiment of the solution of the task according to the invention provides that a first output of the output link logic is connected to an input of the second input link logic and that a second output of the output link logic is connected to the first input link logic.
- a further special embodiment of the solution of the task according to the invention provides that the first output of the output link logic is switched with the first input and a second input of the second input link logic.
- This solution creates the advantageous distribution of the data to be processed that spans the respective data path.
- the invention will be explained below using an exemplary embodiment. In the drawing shows
- Fig. 1 is a block diagram of a strip of data paths
- the MIF 1 is in data exchange with the ICU 2.
- the data are output from the RFU 3 arranged in the ICU 2 to the processor bus arrangement 6. There they are tapped for the bus expansion 7 and arrive at the first input link logic 8.
- the data are assigned here and subsequently stored in the input register 10.
- the link to existing intermediate results of the output link logic 13 is carried out in the second input link logic 11. This is followed by the processing in the functional unit 12.
- the connected output link logic 13 there is a link to output values of adjacent data paths and the resulting value is buffered.
- the data of the first output of the output logic logic 13 are placed on an input of the second input logic logic 11.
- the data of the second output of the output logic logic 13 are passed to the input of the first input logic logic 8.
- FIG. 2 shows the data flow of a data path with its most important processing stages, which the blocks shown in FIG. 1 now implement as part of the individual data path.
- the data provided by the RFU 3 are switched to the processor bus arrangement 6. From there, they arrive at the bus extension 7, where they are detected by the multiplexers MUXl 15, MUX2 16, MUX3 17, MUX4 18, which are part of the first input logic logic 8.
- the data is stored by Register1 19 and Register2 20.
- the data stored in this way are processed in the multiplexers MUX5 21 and in the MUX6 22.
- the data is now made available for processing in the subsequently connected ALU functional unit 23, and on the other hand, the data is provided for the adjacent path.
- the data of neighboring paths in MUX5 21 and MUX6 22 are also linked.
- the output value in the accumulator multiplexer 24 is linked to a result value of the adjacent data path and at the same time the output value of the ALU functional unit 23 is branched off to a further adjacent data path.
- the output value of the accumulator multiplexer 24 is thus temporarily stored in the RAA accumulator register 25.
- the buffered value of the RAA accumulator register 25 is placed on the one hand on an input of the MUX6 22 and is also made available to the adjacent data path.
- this value is fed via a line driver 26 to the SATMUX 29, which links it to output data of a further data path.
- a buffered value for output storage is stored in the XRF output register 27 for output and is fed to the SAT BSH operator 28 via a data bus. This is processed together with the output data of the SATMUX 29 in the SAT BSH operator 28. Its output data are linked together with the extended data path signal 31 in the EXPMUX 30.
- the data processed in the data path is output to the processor bus arrangement 6 and thus also for further processing in the RFU 3.
- MIF Memory Interface
- ICU Inter Connecting Unit
- RFU Registered Function Unit
- LCU Logical Connection Unit Linking Unit Processor Bus Arrangement Bus Expansion First Input Linking Logic DPX (Data Path Group) Input Register Second Input Linking Logic Functional Unit Output Linking Logic Output Register MUX1 MUX2 MUX3 MUX4 Registerl Register2 MUX4 MUX5
- ALU functional unit Accumulator-Multiplexer RAA-Accumulator-Register Line driver
Landscapes
- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multi Processors (AREA)
- Bus Control (AREA)
- Executing Machine-Instructions (AREA)
- Microcomputers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10051284 | 2000-10-16 | ||
| DE10051284A DE10051284A1 (de) | 2000-10-16 | 2000-10-16 | Datenpfadanordnung |
| PCT/DE2001/003915 WO2002033569A2 (de) | 2000-10-16 | 2001-10-15 | Datenpfadanordnung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1330726A2 true EP1330726A2 (de) | 2003-07-30 |
Family
ID=7659995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01987921A Withdrawn EP1330726A2 (de) | 2000-10-16 | 2001-10-15 | Datenpfadanordnung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20040044818A1 (de) |
| EP (1) | EP1330726A2 (de) |
| JP (1) | JP2004512598A (de) |
| AU (1) | AU2002218136A1 (de) |
| DE (1) | DE10051284A1 (de) |
| WO (1) | WO2002033569A2 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4203157A (en) * | 1978-09-05 | 1980-05-13 | Motorola, Inc. | Carry anticipator circuit and method |
| US4272828A (en) * | 1979-01-03 | 1981-06-09 | Honeywell Information Systems Inc. | Arithmetic logic apparatus for a data processing system |
| JPS5757345A (en) * | 1980-09-24 | 1982-04-06 | Toshiba Corp | Data controller |
| JPS60258671A (ja) * | 1984-06-05 | 1985-12-20 | Nec Corp | プロセツサ |
| US4641276A (en) * | 1984-10-22 | 1987-02-03 | General Electric Company | Serial-parallel data transfer system for VLSI data paths |
| KR860007588A (ko) * | 1985-03-25 | 1986-10-15 | 미쓰다 가쓰시게 | 데이터 처리장치 |
| US5692139A (en) * | 1988-01-11 | 1997-11-25 | North American Philips Corporation, Signetics Div. | VLIW processing device including improved memory for avoiding collisions without an excessive number of ports |
| JPH0758460B2 (ja) * | 1988-05-25 | 1995-06-21 | 日本電気株式会社 | 浮動小数点演算の正規化制御方式 |
| US5301340A (en) * | 1990-10-31 | 1994-04-05 | International Business Machines Corporation | IC chips including ALUs and identical register files whereby a number of ALUs directly and concurrently write results to every register file per cycle |
| US7114056B2 (en) * | 1998-12-03 | 2006-09-26 | Sun Microsystems, Inc. | Local and global register partitioning in a VLIW processor |
-
2000
- 2000-10-16 DE DE10051284A patent/DE10051284A1/de not_active Withdrawn
-
2001
- 2001-10-15 AU AU2002218136A patent/AU2002218136A1/en not_active Abandoned
- 2001-10-15 EP EP01987921A patent/EP1330726A2/de not_active Withdrawn
- 2001-10-15 US US10/399,243 patent/US20040044818A1/en not_active Abandoned
- 2001-10-15 WO PCT/DE2001/003915 patent/WO2002033569A2/de not_active Ceased
- 2001-10-15 JP JP2002536887A patent/JP2004512598A/ja active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0233569A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10051284A1 (de) | 2002-04-25 |
| US20040044818A1 (en) | 2004-03-04 |
| WO2002033569A3 (de) | 2003-01-03 |
| AU2002218136A1 (en) | 2002-04-29 |
| JP2004512598A (ja) | 2004-04-22 |
| WO2002033569A2 (de) | 2002-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20030514 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB |
|
| 17Q | First examination report despatched |
Effective date: 20071105 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NXP SEMICONDUCTORS GERMANY GMBH |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NXP B.V. |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20110503 |