Micrel Confidential
13
CENTAUR
KS8695PX Demo Board Description
Integrated Multi-Port PCI Gateway Solution
4.2 Flash
The KS8695PX provides a glueless interface to flash memory as shown in Figure 4. The
KS8695PX Demo Board supports 1 flash memory chip either in a socket or mounted
directly. The socketed chip makes for easier development. The layout supports either a
2Mx8 or 4Mx8 bit flash chip. The flash memory occupies external static memory bank
0. The KS8695PX flash data bus width is programmable for 8, 16, or 32 bits. The
system addressing is determined by the WLED[1:0]/B0SIZE[1:0] inputs. The
KS8695PX will automatically adjust the system addressing for byte wide, half word wide
(16 bit), or word wide (32 bit) flash configurations. B0SIZE[1:0] is hard coded to “01”
for 8 bit flash on the KS8695PX Demo Board.
Figure 4 KS8695PX Flash Interface
DATA[31..0]
ADDR[20..0]
RCSN0
B0SIZE[1..0]
KS8695P
EROEN
ERWEN0
32
2
FLASH(U3)
2M x 8 or
4M x8
WE#
CE#
A[20..0]
DQ[7..0]
OE#
RESET#
RY/BY#
WRSTO
21
DATA[7..0]
ADDR[20..0]
ERWEN1
ERWEN2
ERWEN3
B0SIZE[1:0]
"01" = 8 bits
"10" = 16 bits
"11" = 32 bits
