Datasheet

Configuration—Daughter Cards
MPC5777C EVB User Guide, Rev. 0
25 Freescale
4.3 MCU External Clock Circuit
In addition to the internal 16 MHz oscillator, the MCU can also be clocked by external oscillator (Y1).
The clock circuitry for the 40 MHz crystal is shown in Figure 15.
Figure 15: 40 MHz crystal circuit
4.4 JTAG Connector
The EVB is fitted with 14-pin JTAG debug connector. The Figure 16 shows the 14-pin JTAG connector
pinout (0.1in. keyed header). Jumper J32 sets VDD_HV_IO_JTAG to either 3.3V or 5V supply. JTAG
jumper setting is detailed in
Table 13.
Table 13:
JTAG jumper settings
Jumper
Description
Jumper Setting
J32
JTAG Power
1-2: Connect 3.3V to VDD_HV_IO_JTAG
2-3: Connect 5.0V to VDD_HV_IO_JTAG
Figure 16: JTAG connector point