Motorola APX 1000 - Page 864

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