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MB86293 Datasheet, PDF (43/285 Pages) Fujitsu Component Limited. – Grraphiics Conttrrollllerr Speciiffiicattiions | |||
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FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
4.5 I n t e r r u p t
Coral issues interrupt requests to the host CPU. Following shows the types of interrupt factor and they
can be enabled/disabled by IMASK (Interrupt Mask Register).
⢠Vertical synchronization detect
⢠Field synchronization detect
⢠External synchronization error detect
⢠Drawing command error
⢠Drawing command execution end
4.6 S H 3 M o d e
In the SH3 mode, operation is assured under the following conditions:
Normally not ready mode
⢠BCLK (CPU bus clock) is 50 MHz or less.
⢠The XWAIT setup time is 9.0 ns or less.
Normally ready mode
⢠Three cycles or more are set for the software wait.
4.7 W a i t
Software wait
The software wait is a wait performed on the CPU side; this wait specifies how many cycles of the
ready signal (XRDY) sampling timing is ignored.
Hardware wait
The hardware wait is a wait on the CORAL side that occurs when CORAL itself cannot read/write data
immediately.
MB86293 CORAL_LQ
Graphics Controller
43
Specifications Rev. 1.1
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