JPS5475956A - Communication control unit - Google Patents
Communication control unitInfo
- Publication number
- JPS5475956A JPS5475956A JP14342777A JP14342777A JPS5475956A JP S5475956 A JPS5475956 A JP S5475956A JP 14342777 A JP14342777 A JP 14342777A JP 14342777 A JP14342777 A JP 14342777A JP S5475956 A JPS5475956 A JP S5475956A
- Authority
- JP
- Japan
- Prior art keywords
- line
- control section
- speed
- buffer
- bit length
- 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
Abstract
PURPOSE: To obtain the processing speed in matching with the line speed from super high speed to ultra low speed, by constituting the communication control unit with the host interface control section, program control section, line control section and memory section.
CONSTITUTION: When command is inputted from CPU 101, control is transferred to the line control section LUG 203 via the host interface control section 201 are program control section 202. The LUC 203 stores the data buffer at the memory section MM 204 every allocation line from super high speed to ultra low speed. In picking up the data from the buffer with scanning in bit period, a given criterion is set to the bit length in the buffer, and when the data of a given bit length is held, since interruption is made from MM204 to LCU 203, the bit length reaches the criterion faster in the high speed line buffer than the low speed line, the number of interrpution is increased than the lower line, and the buffer storage time can be reduced. Accordingly, the processing speed in matching with the line speed can be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14342777A JPS5475956A (en) | 1977-11-29 | 1977-11-29 | Communication control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14342777A JPS5475956A (en) | 1977-11-29 | 1977-11-29 | Communication control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5475956A true JPS5475956A (en) | 1979-06-18 |
Family
ID=15338466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14342777A Pending JPS5475956A (en) | 1977-11-29 | 1977-11-29 | Communication control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5475956A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60120452A (en) * | 1983-12-02 | 1985-06-27 | Advantest Corp | Data transmitting device |
JPS63237645A (en) * | 1987-03-25 | 1988-10-04 | Nec Yamagata Ltd | Communication controller |
JPH01276257A (en) * | 1988-04-27 | 1989-11-06 | Yamatake Honeywell Co Ltd | Communication control device |
US6137795A (en) * | 1997-03-19 | 2000-10-24 | Fujitsu Limited | Cell switching method and cell exchange system |
-
1977
- 1977-11-29 JP JP14342777A patent/JPS5475956A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60120452A (en) * | 1983-12-02 | 1985-06-27 | Advantest Corp | Data transmitting device |
JPS63237645A (en) * | 1987-03-25 | 1988-10-04 | Nec Yamagata Ltd | Communication controller |
JPH01276257A (en) * | 1988-04-27 | 1989-11-06 | Yamatake Honeywell Co Ltd | Communication control device |
US6137795A (en) * | 1997-03-19 | 2000-10-24 | Fujitsu Limited | Cell switching method and cell exchange system |
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