Processing Time For Extended Intelligent I/O Service (Ei 2 Os) - Fujitsu F2MC-16LX Hardware Manual

CHAPTER 3 INTERRUPT
3.7.5 Processing Time for Extended Intelligent I/O Service
2
(EI OS)
The time required for the processing of the Extended Intelligent I/O service (EI
depends on the settings in the Extended Intelligent I/O service descriptor (ISD).
2
• Setting of the EI
• Address set by the I/O register address pointer register (I/OA)
• Address set by the buffer address pointer register (BAP)
• External data bus width for external access
• Transfer data length
As a hardware interrupt is activated upon completion of data transfer by EI
time for handling the interrupt is added.
I Processing time for Extended Intelligent I/O service (EI
❍ To continue data transfer
2
The EI OS processing time taken when EI
status register (ISCS) setting as shown in Table 3.7-2 "Execution time for Extended Intelligent
I/O service".
Table 3.7-2 Execution time for Extended Intelligent I/O service
2
Setting in EI OS termination control bit (SE)
Setting in I/OA update/fix bit (IF)
Setting in BAP address update/fix
selection bit (BF)
Unit: Machine cycle (One machine cycle corresponds to one clock cycle of the machine clock (φ).)
2
The EI OS processing time taken when EI
according to the EI
2
EI OS execution time for data transfer".
90
OS status register (ISCS)
Fix
Update
2
OS execution conditions as shown in Table 3.7-3 "Correction values for
2
OS) (Time for each transfer)
2
OS continues data transfer depends on the EI
Terminates due to
termination request from
the peripheralI
Fix Update
32 34
34 36
2
OS continues data transfer must be corrected
2
OS)
2
OS, the
2
OS
Ignores termination
request from the
peripheral
Fix Update
33 35
35 37