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147
CHAPTER 7 INTERRUPT
7.6.5
Processing Time of the Extended Intelligent I/O Service
(EI
2
OS)
The time required for processing the extended intelligent I/O service (EI
2
OS) changes
according to the following factors:
• EI
2
OS status register (ISCS) setting
• Address (area) pointed to by the I/O register address pointer (IOA)
• Address (area) pointed to by the buffer address pointer (BAP)
• External data bus length for external access
• Transfer data length
Because the hardware interrupt is activated when data transfer by EI
2
OS terminates, the
interrupt handling time is added.
■
Processing Time (one transfer time) of the Extended Intelligent I/O Service (EI
2
OS)
●
When data transfer continues
The EI
2
OS processing time for data transfer continuation is shown in Table 7.6-2 based on the EI
2
OS status
register (ISCS) setting.
Unit:Machine cycle (One machine cycle corresponds to one clock cycle of the machine clock,
φ
).
As shown in Table 7.6-3, interpolation is necessary depending on the EI
2
OS execution condition.
Table 7.6-2 Extended Intelligent I/O Service Execution Time
EI
2
OS termination control bit (SE) setting
Terminates due to termination
request from the peripheral
Ignores termination request
from the peripheral
IOA update/fixed selection bit (IF) setting
Fixed
Update
Fixed
Update
BAP address update/fixed selec-
tion bit (BF) setting
Fixed
32
34
33
35
Update
34
36
35
37
Table 7.6-3 Data Transfer Interpolation Value for EI
2
OS Execution Time
I/O register address pointer
Internal access
External access
B/Even
Odd
B/Even
8/Odd
Buffer address
pointer
Internal access
B/Even
0
+2
+1
+4
Odd
+2
+4
+3
+6
External access
B/Even
+1
+3
+2
+5
8/Odd
+4
+6
+5
+8
B:
Byte data transfer
8:
External bus using the 8-bit word transfer
Even: Even-numbered address word transfer
Odd: Odd-numbered address word transfer
Summary of Contents for MB90460 Series
Page 1: ...The following document contains information on Cypress products ...
Page 3: ......
Page 5: ......
Page 9: ...iv ...
Page 41: ...22 CHAPTER 1 OVERVIEW ...
Page 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Page 83: ...64 CHAPTER 3 CPU ...
Page 95: ...76 CHAPTER 4 RESET ...
Page 107: ...88 CHAPTER 5 CLOCK ...
Page 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 175: ...156 CHAPTER 7 INTERRUPT ...
Page 181: ...162 CHAPTER 8 MODE SETTING ...
Page 223: ...204 CHAPTER 9 I O PORT ...
Page 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Page 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Page 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Page 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Page 485: ...466 CHAPTER 16 PWC Timer ...
Page 531: ...512 CHAPTER 17 UART ...
Page 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Page 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Page 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Page 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Page 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Page 715: ...696 APPENDIX ...
Page 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 739: ......