Freescale Semiconductor i.MX27 PDK 1.0 User Manual
Page 13
i.MX27 PDK 1.0 Hardware User's Guide, Rev. 1.0 Freescale
Semiconductor
2-2
Table 2-1 Debug Board, Top Components
Component
Description
S1
Power button, connected to the ON1B input of the MC13783 through the 500 pin connector.
The line is pulled up, and pushing it grounds the line. If MC13783 is in Off, User Off or
Memory Hold Mode, the board can be powered on by pushing the button
S2
Reset button, which resets the Debug board
S3
System reset switch, connected to the RESETB to MX27. The line is pulled up, and pushing it
grounds the line.
S4
Power on switch, which powers up the Debug board when set to 1.
J1
10/100 Base T Ethernet RJ45 Connector
J2
5.0V DC power connector
J3
Current measure connector; measures the current at various points of CPU Engine and
Personality board from the connector
F1
Re-settable fuse; re-settable over-current protection
D1 – D8
LEDs for CPLD debug
D9
LED for debug board 3.3V power; the LED will be bright when debug 3.3V is power on
D11
LED for DC power supply; the LED will be bright when 5.0V DC power is supplied
P1
WEIM Address measure connector; can support CodeTest Interface Probe
P2
WEIM Data measure connector; can support CodeTest Interface Probe
BT1, BT2
Test buttons for CPLD
CN1
i.MX27 JTAG connector
CN2
Debug board CPLD JTAG connector
CN3
Personality board CPLD JTAG connector (Reserved)
CN74
500 pins connector to Personality board
CON4
UART (DCE) DB9 female connector
Enable switch; the switch designation settings follow.
ON
Serial port UART (DTE) CON3 is selected
SW4-1 UART Port Select
OFF
Serial port UART (DCE) CON4 is selected
ON
Enable NorFlash on Debug board
SW4-2 NorFlash Enable
OFF
Disable Norflash on Debug board
ON
Power supply to three boards
SW4
SW4-8 Power Enable
OFF
Power supply to Debug board only
Boot mode setting switches; SW5 to SW10 settings determine where the processor begins
program execution; the valid combinations of the switch settings follow.
Boot mode device
SW5
Boot4
SW6
Boot3
SW7
Boot2
SW8
Boot1
SW9
Boot0
SW10
UART/USB Bootloader
X
0
0
0
0
0
SW5 – SW10
8-bit NAND Flash
(2KB page) Ext
X 0 0 0 1 0