LMK04000BEVAL/NOPB National Semiconductor, LMK04000BEVAL/NOPB Datasheet - Page 53

• Manufacturer Part Number: LMK04000BEVAL/NOPB
• Description: BOARD EVAL PRECISION CLOCK PLL
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LMK04000BEVAL/NOPB

• Main Purpose: Timing, Clock Conditioner
• Embedded: No
• Utilized Ic / Part: LMK04000
• Primary Attributes: 122.88 MHz VCXO
• Secondary Attributes: Integrated PLL & VCO
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMK04000BEVAL; LMK04000BEVAL

Appendix I: Properly Configuring LPT Port
When trying to solve any communications issue, it is convenient to program the POWERDOWN
bit to confirm high/low current draw of the evaluation board or the PLL_MUX between “Logic
Low” and “Logic High” LD output to confirm successful communications.
LPT Driver Loading
The parallel port must be configured for proper operation. To confirm that the LPT port driver is
successfully loading click “LPT/USB”
the following message is displayed:
Figure 30 - Successfully Opened LPT Driver
Successful loading of LPT driver does not mean LPT communications in CodeLoader are setup
properly. The proper LPT port must be selected and the LPT port must not be in an improper
mode.
The PC must be rebooted after install for LPT support to work properly.
Correct LPT Port/Address
To determine the correct LPT port in Windows, open the device manager (On Windows XP,
Start
the LPT port under the Ports (COM & LPT) node of the tree. It can be helpful to confirm that
the LPT port is mapped to the expected port address, for instance to confirm that LPT1 is really
mapped to address 0x378. This can be checked by viewing the properties of the LPT1 port and
viewing resources tab to verify that the I/O Range starts at 0x378. CodeLoader expects the a
traditional port mapping:
If a non-standard address is used, use the “Other” port address in CodeLoader and type in the
port address in hexadecimal. It is possible to change the port address in the computer’s BIOS
settings. The port address is set in CodeLoader at the Port Setup tab as shown in Figure 31.
Settings
L M K 0 4 0 X X - R E V 3
Control Panel
E V A L U A T I O N
System
LPT1
LPT2
LPT3
Port
“Check LPT Port.” If the driver properly loads then
53
Hardware Tab
Address
0x3BC
0x378
0x278
B O A R D
O P E R A T I N G
Device Manager) and check
I N S T R U C T I O N S