Troubleshooting Tables: List of Board and IC Signals 7-9
none OMAP GPIO1
determines 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
external 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) subsys-
tem 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, Lighting
Controllers, MACE
Tamper ckt.
"AA20 0 Output None 0 Output None
NC NC R18 Input Pull-
down
Input Pull-
down
NC NC Y8
I/O Pullup Input Pull-
down
NC NC W8
I/O Pullup Input Pull-
down
NC NC V8
I/O Pullup Input Pull-
down
Table 7-7. 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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