DK2000 High-Performance Demo Kit Motherboard

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Table 4. Chip Selects and Memory Map

CHIP SELECT

FUNCTION/DEVICE

STARTING ADDRESS

CS0

Flash Bank 0 (Boot ROM)

0x10000000

CS1

Flash Bank 1

0x20000000

CS2

SDRAM

0x00000000

CS3

Daughter Card Slot 0

0x30000000

CS4

Daughter Card Slot 1

0x40000000

CS5

Daughter Card Slot 2

0x50000000

CS6

Daughter Card Slot 3

0x60000000

CS7

STIM ID Control

0x70000000

CS8

STIM Device Control

0x80000000

CS9

Peripherals

0x90000000

CS10

Unused (pin assigned to different function)

CS11

EPLD

0xB0000000

Note 1: CS0 and CS1 can be swapped with jumper settings.

Note 2: The Dallas Semiconductor device is typically located at the daughter card address + 0x1000. Example: For a daughter card in slot 2,

the device address begins at 0x50001000 (0x50000000 plus the daughter card offset of 0x1000).

Table 5. Chip Select 7 Mapping

ADDRESS OFFSET

BIT 0

BIT 1

BIT 2

BIT 3

BIT 4

BIT 5

BIT 6

BIT 7

0x00

STIM ID

0x02

STIM LED

N/A

N/A

N/A

N/A

N/A

N/A

The STIM ID register contains the ID of the STIM board. Value is 0xFF if no STIM card is present.

The STIM LED register controls the LED on the STIM as follows:

00

LED is OFF

01

LED is ON and is RED

10

LED is ON and is GREEN

11

LED is OFF

Figure 5. Flash Bank Configurations

CS9. Chip select 9 is connected to the EPLD and is used to address several devices. The EPLD decodes CS9

accesses according to the Table 6.

Table 6. Chip Select 9 Mapping

ADDRESS OFFSET

BIT 0

BIT 1

BIT 2

BIT 3

BIT 4

BIT 5

BIT 6

BIT 7

0x0000

Slot 1 Daughter Card ID

Slot 0 Daughter Card ID

0x1000

Slot 3 Daughter Card ID

Slot 4 Daughter Card ID

0x2000

Slot 3 LED

Slot 2 LED

Slot 1 LED

Slot 0 LED

0x3000

FPGA

The Slot Daughter Card ID registers are used to determine the types of daughter cards present in the system.

Typical software implementation reads the daughter card ID values and assigns device drivers based on the

values. Daughter card IDs that are the value 0xE indicate an extended daughter card ID. The extended daughter

card ID can be read at offset 0 of the slot address. A value of 0xF indicates that a daughter card is not present in

the slot.

13

…

3 , 1

14

…

4 , 2

P7

13

…

3 , 1

14

…

4 , 2

CS0 TO BANK 0, CS1 TO BANK 1

CS0 TO BANK 1, CS1 TO BANK 0