
Configuration
—Daughter Cards
MPC5777C EVB User Guide, Rev. 0
36
Freescale
Table 20: Reset circuit jumper settings
Jumper
Description
Jumper Setting
J27
Connect reset switch circuit
to RESET pin
1-2: connect to MCU RESET_B
J523
Connect Power SBC reset
to MCU Reset
3-4: SBC_RSTB connect to RESET_B
5.3
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 21
.
Figure 21: 40 MHz crystal circuit
5.4
JTAG Connector
The EVB is fitted with 14-pin JTAG debug connector. The
Figure 22
shows the 14-pin JTAG connector
pinout (0.1in. keyed header). Jumper
J31
sets VDD_HV_IO_JTAG to either 3.3V or 5V supply. JTAG
jumper setting is detailed in