User`s manual

HARDWARE PREPARATION AND INSTALLATION

2-8 MPC505EVBUM/D

2.2.6 System Clock Selection Headers (J6 and J7)

Jumper headers J6 and J7 let you define the system clock source. The factory configuration

(shown below) is for normal operation; a fabricated jumper on J6 and J7 pins 1 and 2. Refer to

Table 2-4 for configuring the system clock source.

Table 2-4. System Clock Source Configuration

MODCLK (J6)

Jumper Settings

VDDSYN (J7)

Jumper Settings

System Phase-Lock-

Loop Options

1 and 2 (default) 1 and 2 (default) Normal Operation

2 and 3 1 and 2 1:1 Mode

1 and 2 2 and 3 SPLL Bypass Mode

2 and 3 2 and 3 Special Test Mode

Fabricated Jumpers