Motorola APX 1000 Detailed Service Manual page 864

7-24
Signal Name
NC NC
codec_cs DSP SPI chip select for
TI dual CODEC
abacus_cs DSP SPI chipselect for
Abacus IC
trident_cs DSP SPI chipselect for
Trident IC
synthesizer_lock RF synthesizer lock
detect
f2_timer_dmcs Timer output compare
for DMCS or SYNCB
mako_tx_rx Trigger for Mako DAC
ramp
On_Off_Switch Radio On_Off detection
option_spi_cs Option board SPI chip
select
dac_cs RF DAC chip select
push_to_talk Push to talk button input
mako_intx Mako main interrupt
mako_usb_intx Mako USB interrupt
mako_option_int Mako Option interrupt
x
Unused and Unwired
OMAP Pin
top_display_cs Top LCD SPI chip select
Unused and Unwired
OMAP Pin
mako_cs Mako IC SPI chip select
mortable Specifies Mobile or Por-
table hardware
gcai_gpio3 GPIO3
Table 7-10. Overall GPIO pin functions
Pin
Description or
Ball #
M8
Y1
L3
V6
V15
M20
L14
G19
W9
T19
T20
P15
AA9
Y12
M14
P3
V19
N15
W13
AA15
Troubleshooting Tables: List of Board and IC Signals
SW Initialized
Active
State
Direction
Output
0 Output
0 Output
0 Output
1=Lock Input
1 Output
1=TX Output
0 Output
0 Output
0 Output
0 Input
0 Input
0 Input
0 Input
Input
0 Output
Output
1 Output
0=Porta- Input
ble
Input
HW Reset
*
PU State Direction
0 Output
1 Output
0 Output
0 Output
None Input
Input
*Input
0 Output
0 Output
Input
None Input
None Input
None Input
None Input
Pull- Input
down
1 Output
0 Output
Input
None 0 Output
None 0 Output
*
PU
or
PD
None
Pull-
down
None
Pull-
down
Pull-
down
None
Pull-
down
None
Pull-
down
Pull-
down