Tait TM8000 Series, Руководство по применению

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108 Connecting Third-Party Products TM8000 3DK Hardware Developer’s Kit Application Manual
September 2003 © Tait Electronics Ltd
Configure the interface between the encryption module and the internal
options connector as described in
Table 5.5 .
Table 5.5 Encryption module interface specification
Encryption
module Internal options
connector
Description/parameter Specification
Signal Pin Signal
Power 1 13V8_SW Switched and unregulated power
from radio.
GND 3 AGND Analog ground.
PTT to options 9 IOP_GPIO1 Control head PTT signal from radio.
Action:
Active State:
Module logic threshold required:
Reflect PTT Status
Low
3V3 CMOS-compatible
a
Clear/code mode 10 IOP_GPIO2 Mode select from radio. Toggled by
radio function key.
Action:
Active State:
Module logic threshold required:
F1…F4 Key Status
Low
3V3 CMOS-compatible
a
Secure mode 11 IOP_GPIO3 Mode indicator to radio.
Action:
Active State:
Toggle F1…F4 Key LED
High
Radio Tx audio to
module 2 AUD_TAP_OUT Tx audio from radio.
Audio tap input point:
Audio tap input unmuting:
Signal level into 600
Ω
:
AUD_TAP_OUT output impedance:
Use T4-E
Use 'on PTT'
690mVp-p (60% RSD
b
)
600
Ω
typical
Module Tx
audio to radio 6 AUD_TAP_IN Tx audio to radio.
Audio tap input point:
Audio tap input unmuting:
Signal level into 600
Ω
:
AUD_TAP_IN input impedance:
Use T4-E
Use 'except on PTT'
690mV
p-p
(60% RSD
b
)
100k
Ω
typical
Radio Rx audio to
module 2 AUD_TAP_OUT Rx audio from radio.
Audio tap input point:
Audio tap input unmuting:
Signal level into 600
Ω
:
AUD_TAP_OUT output impedance:
Use T4-E
Use 'on PTT'
690mV
p-p
(60% RSD
b
)
600
Ω
typical
Module Rx
audio to radio 6 AUD_TAP_IN Rx audio to radio.
Audio tap input point:
Audio tap input unmuting:
Signal level into 600
Ω
:
AUD_TAP_IN input impedance:
Use T4-E
Use 'except on PTT'
690mV
p-p
(60% RSD
b
)
100k
Ω
typical
a. If the module input is 5V CMOS then a 3.3k
Ω
pullup to 5V on the module will be required for compatibility.
For more information refer to “Digital Output Lines” on page 64 .
b. RSD = Rated System Deviation