MB86294 Datasheet, PDF (37/305 Pages) Fujitsu Component Limited. – Grraphiics Controller specifications

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
2.3.4 Graphics memory interface
Pin name
MD31-0
MD53-32
MD55-54
MD63-56
MA0-14
MRAS
MCAS
MWE
MDQM5-0
MDQM7-6
MCLK0
MCLK1
Table 2-3 Graphics memory interface pins
I/O
I/O
I/O
I/O
I/O
Output
Output
Output
Output
Output
Output
Output
Input
Description
Graphics memory bus data
Graphics memory bus data or digital R7-0, G7-0,
B7-2 output (when XRGBEN pin = 0)
Graphics memory bus data
Graphics memory bus data or video capture input
(when XRGBEN pin =0)
Graphics memory bus data
Row address strobe
Column address strobe
Write enable
Data mask
Data mask or digital B1-0 output(when XRGBEN=0)
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 SD RAM (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.
Connect MCLKI to MCLK0.
- When memory bus width is 32 bit and digital RGB output is used ( XRGBEN=”0”), MD54-63 pins are
set to “high level”, and MD32-53 pins and MDQM4-7 pins are set to open.
- When memory bus width is 32 bit and digital RGB output is not used ( XRGBEN=”1”), MD32-63 pins
and MDQM4-7 pins are set to open.
When XRGBEN is fixed at “1”, MD63-MD32 and MDQM7-MDQM6 can be used as graphics memory
interface.
When XRGBEN is fixed at “0”, these signals can be used as digital RGB output and video capture data
input.
MB86294/294S CORAL_LB
Graphics Controller
37
Specifications Rev. 1.0