MB86293 Datasheet, PDF (36/285 Pages) Fujitsu Component Limited. – Grraphiics Conttrrollllerr Speciiffiicattiions

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
3 PROCEDURE OF THE HARDWARE INITIALIZATION
3.1 H a r d w a r e r e s e t
1.Do the hardware reset. (see section 11.3.2)
2.After the hardware reset, set the CCF(Change of Frequency) register (section 9.2.1).
In being unstable cycle after the hardware reset, keep 32 bus cycles open.
3.Set the graphics memory interface register, MMR (Memory I/F Mode Register).
After setting the CCF register, take 200 us to set the MMR register.
In being unstable memory access cycle, keep 32 bus cycles open.
4.Other registers, except for the CCF register and the MMR register, should be set after
setting the CCF register.
In case of not using memory access, the MMR register could be set in any order after
the CCF register is set.
3.2 R e -r e s e t
1. Reset XRST signal.
2. See section 3.1 for registers setting after the procedure of re-reset.
3.3 S o f t w a r e r e s e t
1. Set the value of the SRST register (see section 9.2.1) for re-reset.
2. It is not necessary to reset the CCF register and the MMR register again.
MB86293 CORAL_LQ
Graphics Controller
36
Specifications Rev. 1.1