Micrel Confidential
9
CENTAUR
KS8695PX Demo Board Description
Integrated Multi-Port PCI Gateway Solution
The default base address for the KS8695PX system configuration registers is 0x03ff0000.
After power up, the user is free to re-map the memory for his/her specific application.
Here is an example of the memory space remapped for operation:
Table 2 Memory Map Example
Address Range
Region Size
Description
0x03FF0000-0x04000000
64 kbyte
KS8695PX Configuration Register
Space
0x03E00000-0x03FEFFFF
2 Mbyte
Spare
0x03A00000-0x03DFFFFF 4
Mbyte
External I/O bank 2
0x03600000-0x039FFFFF 4
Mbyte
External I/O bank 1
0x03200000-0x0381FFFF 4
Mbyte
External I/O bank 0
0x02800000-0x031FFFFF 10
Mbyte Space
0x01480000-0x027FFFFF 32
Mbyte
FLASH
Expansion Space
0x01400000-0x0147FFFF 500
kbyte
FLASH
0x01000000-0x013FFFFF 4
Mbyte
SDRAM
Expansion Space
0x00000000-0x00FFFFFF 16
Mbyte SDRAM
Please see the KS8695PX Detailed Register Description document for more information.
4.1 KS8695PX
4.1.1 Board
Reset
The KS8695PX reference board provides both a power on reset and a push button reset,
as well as circuitry to reset the board using the Multi-ICE. At power on, the board is
automatically reset. The user can also press S1, the reset button on the board for a
manual reset. After any reset, expect the LEDs to flash indicating the power on self test.
4.1.2 System
Clock
The system clock is generated using a 25 MHz crystal (Y1). The crystal is connected to
the XCLK1 and XCLK2 inputs on the KS8695PX. The clock is specified as 3.3V
tolerant, +/- 100 ppm.
4.1.3 Jumpers
There are a number of jumpers and test points on the board to facilitate configuration and
testing of the KS8695PX. Below is a table that lists the jumpers and test points, their
purpose, and the recommended configuration on the board.
