Texas Instruments TSW4806EVM: Low Cost Programmable Clock Source TSW4806EVM TSW4806EVM 데이터 시트
제품 코드
TSW4806EVM
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
(c) Program the EVM by pushing the Reset button (SW2)
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
loaded under address 0000 and the second resides in address 0001. When loaded with address 0000, the
outputs are as described in
. 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.
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.
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
9
SLAU454 – July 2012
TSW4806EVM
Copyright © 2012, Texas Instruments Incorporated