Samsung S5PC110 Manual page 615

S5PC110_UM
Figure 3-4
NOTE: This dummy halfword read is necessary to confirm that new configuration value is written to the OneNAND device
before updating the ONENAND_IF_CTRL register. We recommend 0x0000 for this dummy read address from
OneNAND device.
ONENAND_IF_CTRL Reg ister
NO
Write New Configu ratio n t o th e
(NOTE)
On eN AND In terface is Ready to
ONENAND_IF_CTRL Reg ist er
ONENAND_IF_CTRL (OneNAND Interface Control) Register Update Flow
U pdate Start
Read ONENAN D _IF_STAT US
ORWB = 0 ?
YES
"System Con figu rat io n 1"
Reg ister o f All th e On eNAND
Devices Conn ect ed with th e
On eN AND Cont ro ller
Read One Dummy Half word
f ro m an On eNAND Device
Write New Con figu rat ion to
ONENAND_IF_CT RL
Accep t t he AHB Read /Wit e
Requ st to Access t he
On eNAND Device
Upd ate Complete
3 ONENAND CONTROLLER
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