Universal Connector J101; Encryption Connector J701; Keypad Module Connector P107; Rf Interface Connector P201 - Motorola ASTRO XTS 5000 Detailed Service Manual

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4.3.1.1 Universal Connector J101

This is a 40-pin connector that mates with the universal flex on the housing. A majority of the lines on
the connector are for user interface: emergency & side buttons (pin 14), monitor button (pin 17),
secure/clear switch (pin 23), frequency switch (pins 24, 25, 26, and 27), volume knob (pin 31), and
the three-position switch (pin 34). The LEDs on the universal flex are controlled through pins 20, 21,
and 22. Connections to the external accessory connector, which include serial communication data
lines, external audio, and option select lines for controlling audio modes, are present at pins 1
through 13. Switched battery voltage (B+SENSE) is provided on pin 32. Most of the pins at this
connector have ESD protection devices and components.

4.3.1.2 Encryption Connector J701

This 40-pin connector provides the interface between the VOCON board and the encryption module.
Two voltages are provided to the encryption board: UNSWB+ and SWB+. The SAP SSI lines, serial
communication data lines, and general-purpose I/O lines from the Patriot IC are included in the
interface to the encryption board. A number of jumpers are present on some of the lines so that the
VOCON board configuration to the encryption board can be changed depending on the encryption
type present.

4.3.1.3 Keypad Module Connector P107

This 22-pin connector mates the VOCON board to the keypad module flex used on Model II and III
radios. The keypad module is provided with 5 volts (pins 7 and 8) for the LEDs. The LEDs are
activated by the signal at pin 6, BL_EN. The row signal lines (pins 13, 14, 15, 16, 17, 18, and 19) and
column signal lines (pins 1, 2, and 3) are all at 3-volt logic levels.

4.3.1.4 RF Interface Connector P201

This is a 26-pin compression connector that interfaces between the VOCON board and the
transceiver board. See
interface between the VOCON and transceiver boards through P201. Ground clip M202 is used on
the bottom side of the VOCON board to contact the transceiver shield. This additional connection
provides a consistent, common ground with the VOCON board and the radio chassis.

4.3.1.5 Display Module Connector P301

This 22-pin connector mates the VOCON board to the display module flex used on Model II and III
radios. Two voltages are provided to the display module: 1.8 volts and 3 volts. The display's parallel
data lines (pins 9, 10, 11, 12, 13, 14, 15, and 16), chip select line (pin 5), read/write line (pin 8),
register select line (pin 7), and parallel/serial configuration line (pin 4) are at 1.8-volt logic levels.
4.3.2

Controller and Memory Section

The controller and memory section contains the following components:
• Patriot IC (U401)
• Static RAM (SRAM) IC (U403)
• Flash memory IC (U402).
See Figure 9-14. VOCON Controller and Memory Circuits—1 of 2 on page 9-20
VOCON Controller and Memory Circuits—2 of 2 on page 9-21
discussion.
April 15, 2002
"4.2.1.2 VOCON Connector P1" on page 4-1
Detailed Theory of Operation
for a detailed description of the
and
for schematic details of the following
: VOCON Board
Figure 9-15.
68P81094C31-O