7-50 Troubleshooting Tables: List of Board and IC Signals
none OMAP GPIO1 deter-
mines default state of
some EMIFS pins.
Latched on rising
edge of
PWR_ON_RESET.
Pulled low on PCB
R19 Input Pull-
down
0 Input Pull-
down
none "Unused, defaults to
UART2.BCLK in reset
mode 0. Pulldown on
PCB
"Y4 Output None 0 Output None
omap_mpu_boot Pin pulled high on
PCB to select exter-
nal boot on EMIFS
CS3 (flash memory)
J20 Input None 1 Input None
reset_mode Determines reset
mode of OMAP.
Latched on rising
edge of
PWR_ON_RESET.
Pulled low on PCB
(mode 0).
P12 Input None 0 Input None
mako_resetx "Master cold reset
input for entire 1710
chip, controlled by
Mako IC
"R12 0 Input None Input None
mako_resetx "MPU (ARM9) sub-
system reset input,
tied to
PWRON_RESET
(R12) on PCB
"U20 0 Input None Input None
omap_reset "Reset output from
OMAP used for
CODEC, CPLD,
Front Display, Light-
ing Controllers,
MACE Tamper ckt.
"AA20 0 Output None 0 Output None
RSW_Int** Rotary Interrupt to
OMAP
Y10 Input Pull-
down
Input Pull-
down
RSW_A** Rotary knob input to
OMAP
V11 Input Pull-
down
Input Pull-
down
RSW_B** Rotary knob input to
OMAP
R11 Input Pull-
down
Input Pull-
down
Table 7-18. Overall GPIO pin functions (Continued)
Signal Name Description
Pin
or
Ball #
Active
State
SW Initialized HW Reset
Direction
*
PU State Direction
*
PU
or
PD
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