Motorola APX 1000 Detailed Service Manual page 868

7-28
Signal Name
omap_mpu_boot Pin pulled high on PCB
to select external boot
on EMIFS CS3 (flash
memory)
reset_mode Determines reset mode
of OMAP. Latched on
rising edge of
PWR_ON_RESET.
Pulled low on PCB
(mode 0).
mako_resetx "Master cold reset input
for entire 1710 chip,
controlled by Mako IC
mako_resetx "MPU (ARM9) subsys-
tem reset input, tied to
PWRON_RESET (R12)
on PCB
omap_reset "Reset output from
OMAP used for
CODEC, CPLD, Front
Display, Lighting Con-
trollers, MACE Tamper
ckt.
RSW_Int Rotary Interrupt to
OMAP
RSW_A Rotary knob input to
OMAP
RSW_B Rotary knob input to
OMAP
NC NC
NC NC
NC NC
NC NC
NC NC
Table 7-10. Overall GPIO pin functions (Continued)
Pin
Description or
Ball #
J20
P12
"R12
"U20
"AA20
Y10
V11
R11
R18
Y8
W8
V8
W15
Troubleshooting Tables: List of Board and IC Signals
SW Initialized
Active
State
Direction
Input
Input
0 Input
0 Input
0 Output
Input
Input
Input
Input
I/O
I/O
I/O
I/O
HW Reset
*
PU State Direction
None 1 Input
None 0 Input
None Input
None Input
None 0 Output
Pull- Input
down
Pull- Input
down
Pull- Input
down
Pull- Input
down
Pul- Input
lup
Pul- Input
lup
Pul- Input
lup
Pul- Input
lup
*
PU
or
PD
None
None
None
None
None
Pull-
down
Pull-
down
Pull-
down
Pull-
down
Pull-
down
Pull-
down
Pull-
down
Pull-
down