MB86290A Datasheet, PDF (28/184 Pages) Fujitsu Component Limited. – Graphics Controller Hardware Specifications

2.3.3 Graphics Memory Interface
Graphics Memory Interface Signals
Signal Name
I/O
Description
MD0-63
In/Out
Graphics memory bus data
MA0-13
Output
Graphics memory bus address
CKE
Output
Clock enable
MRAS
Output
Row address strobe
MCAS
Output
Column address strobe
MWE
Output
Write enable
MDQM0-7
MCLKO
MCLKI
Output
Output
Input
Data mask
Graphics memory clock output
Graphics memory clock input
♦ This interface is used to transfer data from/to external memory. 64-
Mbit SDRAM can be used without glue logic.
♦ The data bus width is set to either 64 or 32 bits. In the 32-bit mode,
MD32-63 and MDQM4-7 must be kept open.
♦ MCLKI and MCLKO are tied to each other externally.
28