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
Summary of Contents for Astro APX 3000
Page 1: ...APXTM TWO WAY RADIOS APX 3000 DETAILED SERVICE MANUAL ...
Page 2: ......
Page 4: ...Notes ...
Page 6: ...vi Document History Notes ...
Page 10: ...x Table of Contents Notes ...
Page 12: ...xii List of Tables Notes ...
Page 18: ...xviii List of Figures Notes ...
Page 22: ...xxii CommercialWarranty Notes ...
Page 46: ...3 20 Theory of Operation Main Board Notes ...
Page 84: ...3 58 Theory of Operation Bluetooth Notes ...
Page 208: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 222: ...7 14 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 282: ...8 60 Schematics Boards Overlays and Parts Lists Main Board Block UHF1 84012513001_A Notes ...
Page 390: ...8 168 Schematics Boards Overlays and Parts Lists Main Board Block VHF 84012512001_A Notes ...
Page 456: ...9 8 Debugging Fixture Powering up Covert Board Notes ...
Page 468: ...Glossary 10 Glossary Notes ...
Page 472: ...Index 4 Index Notes ...
Page 473: ......