Appendix A Table 1. Mts 2000 Single Key Secure Module I/O Definition - Motorola HT-1000 Service Manual

Appendix A Table 1. MTS 2000 Single Key Secure Module I/O Definition

SIGNAL NAME
UNSW B+
Vdd
2.1MHz REF CLK
GROUND
ASFIC PRE-EMP out
AUX RX
DISCRIMINATOR
GROUND
RESET
KEY/FAIL
TX AUDIO
KEY INSERT DATA
DVP WE
SPI CLK
SPI TX DATA (MOSI)
SPI RX DATA (MISO)
EXP INT1
EXP SEL1
CONT 5V
Appendix A- 2
SPI bus consists of five signal lines. Refer to Appendix Table 1 for the
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.
17
SPI CLK
18
SPI TX DATA (MOSI)
21
EXP SEL 1
3
2.1MHz REF CLK
7
ASFIC PRE-EMP out
10
DISCRIMINATOR
16
DVP WE
15
KEY INSERT DATA
13
KEY/FAIL
12
RESET
Appendix Figure 1. Secure Module
CONNECTOR PLUG
P1 PIN NUMBER
1
2
3
4
7
9
10
11
12
13
14
15
16
17
18
19
20
21
24
5,6,8,22,23,25
UNSW B+ Vdd
1
2
Interface and Control
Serial Peripheral Interface (SPI)
Encode / Decode
Key Variable Storage
4 11
Unswitched battery voltage
Switched 5 volt supply
2.1/2.4 MHz clock signal
Ground
Transmit Clear Audio
Receive Clear Audio
Receive Encrypted Audio
Ground
Radio Reset - Does NOT reset module
Keyloading Signal
Transmit Encrypted Audio
Keyloading Signal
Keyloading Signal
SPI Data Clock
SPI Data from Host
SPI Data to Host
SPI Secure Interrupt Request
SPI Secure Slave Select
Continuous 5 Volt Regulator Output (Not Used)
Not Used
19
SPI RX DATA (MISO)
20
EXP INT 1
14
TX AUDIO
9
AUX RX
24
CONT 5V
Not Connected: 5,6,8,22,23,25
MAEPF-26127-O
FUNCTION