Motorola APX 5000 Service Manual page 270

7-20
Table 7-12. Overall GPIO pin functions across multiple boards (Continued)
Signal Name
ALL_RX_ACTIV Route LO to the mixer.
E Must be on for all RX
modes.
H65_VCO_PATH Enables the path for
_ON VCO H65. Should be
enabled for 700TX TA,
700 RX, 800 RX, and
800 TX TA
H68_VCO_PATH Selects the path for
_ON VCO H68. Must be on
for VHF TX, UHFR1,
and UHFR2.
VHF_RX_ON Enables H67 VHF RX
VCO. Also turns on VHF
LNA.
TX_BUFFER_O Enables the TX buffer.
N On for all TX modes.
Also turns on log amp.
7/ Turns on VCO H67.
800TX_VCO_O
N
VHF_TX_UHF_ Turns on VCO H68, SEL
R1_VCO_ON 1. Used for VHF transmit
and UHF1 RX.
700TX/ Turns on SEL 1 on H65
800RX_VCO_O VCO. For 700 TX TA
N and 800 RX.
800TX/ Turns on SEL2 on H65
700RX_VCO_O VCO. Used for 800 TX
N TA and 700 RX.
UHF_TX_R1_V Turns on VCO H66 SEL
CO_ON 1. Used for 380-450
UHF_TX_R2_V This is to turn on VCO
CO_ON H66 SEL 2. This would
be used for 450-520
700RX_FRONT_ The enables the 700
END_ACTIVE path in the RX front end.
UHF_RX_R2_V This enables VCO H68
CO_ON SEL 2.
Pin
Description or
Ball #
3
5
7
2
4
6
8
9
10
12
13
14
15
Troubleshooting Tables: List of Board and IC Signals
SW Initialized
Active
State
Direction
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
1 Output
HW Reset
*
PU State Direction
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
*
PU
or
PD
None
None
None
None
None
None
None
None
None
None
None
None
None