JPS5541560A - Data transfer system of variable burst mode - Google Patents
Data transfer system of variable burst modeInfo
- Publication number
- JPS5541560A JPS5541560A JP11492178A JP11492178A JPS5541560A JP S5541560 A JPS5541560 A JP S5541560A JP 11492178 A JP11492178 A JP 11492178A JP 11492178 A JP11492178 A JP 11492178A JP S5541560 A JPS5541560 A JP S5541560A
- Authority
- JP
- Japan
- Prior art keywords
- data
- read
- inputted
- line
- data transfer
- 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.)
- Pending
Links
Landscapes
- Bus Control (AREA)
Abstract
PURPOSE: To increase the processing speed for read and write to I/O devices and reduce a buffer circuit by transferring data to a central processing unit (CPU) while reading data from I/O devices.
CONSTITUTION: When a read instruction is transferred from a CPU, a control circuit operates to turn on the read gate for a device by the control signal of 5-byte group buffer circuit 5. The device transfers read data from the turning-on time by this signal. Data is inputted to serial/parallel conversion circuit 9 through read data line 1 and is converted from serial to parallel by block line 4 and is inputted to buffer group 10 through data line 2. When one-byte components of data are inputted, they are set to B1 by the control signal of control line 6 and are shifted successively and are set to final-stage B6.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11492178A JPS5541560A (en) | 1978-09-19 | 1978-09-19 | Data transfer system of variable burst mode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11492178A JPS5541560A (en) | 1978-09-19 | 1978-09-19 | Data transfer system of variable burst mode |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5541560A true JPS5541560A (en) | 1980-03-24 |
Family
ID=14649952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11492178A Pending JPS5541560A (en) | 1978-09-19 | 1978-09-19 | Data transfer system of variable burst mode |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5541560A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS593597U (en) * | 1982-06-30 | 1984-01-11 | 日産自動車株式会社 | High frequency noise removal device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5361240A (en) * | 1976-11-12 | 1978-06-01 | Fujitsu Ltd | Data transfer control system |
JPS544028A (en) * | 1977-06-10 | 1979-01-12 | Nec Corp | Direct memory access unit |
-
1978
- 1978-09-19 JP JP11492178A patent/JPS5541560A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5361240A (en) * | 1976-11-12 | 1978-06-01 | Fujitsu Ltd | Data transfer control system |
JPS544028A (en) * | 1977-06-10 | 1979-01-12 | Nec Corp | Direct memory access unit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS593597U (en) * | 1982-06-30 | 1984-01-11 | 日産自動車株式会社 | High frequency noise removal device |
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