Motorola ASTRO XTS 3000 User Manual

7-2
Circuit Description The secure module operates from three power supplies (UNSW_B+,
SW_B+, and +5V). The +5V and the SW_B+ are turned on and off by
the radio’s on/off switch. The UNSW_B+ provides power to the secure
module as long as the radio battery is in place.
Key variables are loaded into the secure module through connector
J601, pin 15. Up to 16 keys (depending on the type of encryption
module) can be stored in the module at a time. The key can be infinite
key retention or 30-seconds key retention, depending on how the code
plug is setup.
The radio’ s host processor communicates with the Secure Module on
the Serial Peripheral Interface (SPI) bus. The host processor is the
master on this bus, while the secure module is a slave on the bus. The
SPI bus consists of five signal lines. Refer to Table 1 for signal
information. A communications failure between the host processor
and the secure module will be indicated as an “ERROR 09/10” message
on the radio display.
Troubleshooting
Secure Operations
Refer to “Disassembly/Reassembly Procedures” on page 8-1. A key
variable loader (KVL) and oscilloscope are needed to troubleshoot the
secure module.
NOTE: The secure module itself is not serviceable. If the
secure module is found to be defective, it must be
replaced.
Error 09/10,
Error 09/90
The ASTRO Digital XTS 3000 radio automatically performs a self test
on every power-up. Should the radio fail the self tests, the display will
show “ERROR 09/10” or “ERROR 09/90” accompanied by a short beep.
If the display shows “ERROR 09/10” or “ERROR 09/90,” the radio failed
the secure power-up tests and the host microcontroller was unable to
communicate with the secure module via the SPI bus. Turn the radio
off and back on. If the radio still does not pass the self tests, then a
problem exists with the secure operations of the radio.
Troubleshooting information for “ERROR 09/10” is found in
Troubleshooting Chart, “09/10 Secure Hardware Failure.” For “ERROR
09/90,” see Troubleshooting Chart, “09/90 Secure Hardware Failure.”
Keyload When the keyloading cable is attached to the ASTRO Digital XTS 3000
radio and “KEYLOADING” is not displayed on the radio’s display, then
the radio has not gone into KEYLOAD mode. For troubleshooting
“KEYLOAD” failure, refer to Troubleshooting Chart, “Key Load Fail.”
NOTE: ASTRO Digital XTS 3000 radios need a keyloader
that has the ability to keyload an ASTRO Digital
XTS 3000 radio. The keyloader must be either a
“T - - - - CX” or a “T - - - - DX” keyloader.

Motorola ASTRO XTS 3000 Specifications

General

Brand	Motorola
Model	ASTRO XTS 3000
Category	Radio
Language	English