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EEPROM

4.2 Program the LMK04806 Device from EEPROM

Program the LMK04806 from a saved configuration setting on the EEPROM:

(a) Power up the board with a 5-V supply

(b) Set the DIPSWITCH (SW1) to the address where the configuration settings were saved. For example,

if the settings were saved to address 9, set DIPSWITCH to 1001.

Note: Red LED On indicates a high bit (or bit 1).

Note: Switch 4 is MSB and Switch 1 is LSB

Figure 7. EEPROM Programming Interface

The EVM comes with two configurations stored in the EEPROM from the factory. The first configuration is

loaded under address 0000 and the second resides in address 0001. When loaded with address 0000, the

outputs are as described in Section 1.2.1. When loaded with the settings from address 0001, the outputs

are as follows:

J7 – 76.8-MHz CMOS output. AC coupled, from CLKOUT10P of LMK04806.

J15 – 76.8-MHz CMOS output. AC coupled, from CLKOUT10N of LMK04806.

J17 – 76.8-MHz CMOS output from CLKOUT11P of LMK04806.

J4 – 153.6-MHz CMOS output from CLKOUT0P of LMK04806.

J1 – 307.2-MHz CMOS output from CLKOUT5P of LMK04806.

J2 – 614.4-MHz CMOS output. AC coupled, from CLKOUT3P of LMK04806.

J3 – 614.4-MHz CMOS output. AC coupled, from CLKOUT3N of LMK04806.

J6 – 614.4-MHz CMOS output from CLKOUT2P of LMK04806.

Table 5 shows all of the available factory-set frequencies stored inside the EEPROM and the DIPSWITCH

settings required to load them.

Table 5. Output SMA's

DIPSWITCH Setting J1 J2, J3, J6 J4 J7, J15, J17

MSB - LSB

0000 245.76 MHz 491.52 MHz 122.88 MHz 61.44 MHz

0001 307.2 MHz 614.4 MHz 153.6 MHz 76.8 MHz

0010 Factory only, not used Factory only, not used Factory only, not used Factory only, not used

. " " " "

0111 Factory only, not used Factory only, not used Factory only, not used Factory only, not used

1000 User configuration 8 User configuration 8 User configuration 8 User configuration 8

. " " " "

1111 User configuration 15 User configuration 15 User configuration 15 User configuration 15

SLAU454–July 2012 TSW4806EVM

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