MB86293 Datasheet, PDF (33/285 Pages) Fujitsu Component Limited. – Grraphiics Conttrrollllerr Speciiffiicattiions

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
2.3.3 Graphics memory interface
Table 2-3 Graphics memory interface pins
Pin name
MD0 to 57
MD58 to 63/RGB
MA0 to 14
MRAS
MCAS
MWE
MDQM0 to 7
MCLK0
MCLK1
I/O
I/O
I/O
Output
Output
Output
Output
Output
Output
Input
Description
Graphics memory bus data
Graphics memory bus data or RGB0 to 1 output
Graphics memory bus data
Row address strobe
Column address strobe
Write enable
Data mask
Graphics memory clock output
Graphics memory clock input
Connect the interface to the external memory used as memory for image data. The interface can be
connected to 64-/128-/256-Mbit SDRAM (16- or 32-bit length data bus) without using any external
circuit.
64 bits or 32 bits can be selected for the memory bus data. When 32-bit memory bus data is used
and 6-bit output is used for R, G, and B (XRGBEN pin = 1), set MD32 to 63 and MDQM4 to 7 to the
open state. When 32-bit memory bus data is used and 8-bit output is used for R, G, and B (XRGBEN
pin = 0), set MD32 to 39 to “High” level input and set MD40 to 57 and MDQM4 to 7 to the open state.
Connect MCLKI to MCLK0.
When XRGBEN is fixed at “1”, MD58 to 63 can be used as graphics memory bus data.
When XRGBEN is fixed at “0”, MD58 to 63 can be used as digital RGB0 to 1 outputs.
MB86293 CORAL_LQ
Graphics Controller
33
Specifications Rev. 1.1