Motorola Malux MTM5x00 Series Installation Manual page 94

68015000181-LB
Chapter 5: Connectors and PIN Assignment
PIN Function
10 SPEAKER+
11 TX_AUDIO
12 GND_ANA
13 MIC1 / EXT_MIC
14 RX_AUDIO
15 MIC2
16 GND_MIC
17 EXTERNAL_PTT
18 UART2_DTR / USBy_ID
19 HOOK_PA_EN
20 UART2_TXD / USBy_TX
21 UART2_RTS / USBy_VBUS
22 UART2_RXD / USBy_RX
23 EMERGENCY
24 UART_CTS
94
Description
Loudspeaker (PA) out-
put +
TX audio input (Line In, 26–Pins rear connector J400, used
for audio recording)
Main audio ground
External microphone input (EXT_MIC), or first microphone
(MIC1), Nominal sensitivity: 80 mV rms, Bias voltage: 9.3 V
or 2.1 V (Selected accessory dependent)
RX audio output (Line Out, 26–Pins rear connector J400,
used for audio playback)
Microphone input (MIC2), Nominal sensitivity: 80 mV rms,
Bias voltage: 9.3 V or 2.1 V (selected accessory depend-
ent)
Ground (for MIC)
PTT input (pulled via 4K7 to 5 V)
RS232 or UART1 /
UART2 DTR / 2nd
USB2.0 (OTG) ID
HOOK_PA_EN input (or
programmable 5 V
GPIO)
RS232 or UART2 TXD /
2nd USB2.0 (OTG) D+
RS232 or UART2 RTS /
2nd USB2.0 (OTG)
VBUS – 100 mA
RS232 or UART2 RXD /
2nd USB2.0 (OTG) D-
Emergency Input (Pulled
via 24K9 to A+) – Pull
low to power on
RS232 or UART1 /
UART2 CTS input
connector because
the mobile radio has
a Class D amplifier. If
it is required to con-
nect a single ended
accessory to speaker
out then the bal-
anced speaker out-
put from the radio
must be converted to
single-ended using a
transformer or an
electrical circuit.
• When Expansion Head is
connected – the connection
is USB2.0.
• When Expansion Head is
not connected and UART2
is configured on pins 1-4 in
CPS codeplug the connec-
tion is USB2.0.
• If UART2 is not configured
on pins 1-4 in CPS code-
plug USB2.0/UART2 is au-
tomatically switched de-
pending on which accessory
is detected.
Table continued...
Send Feedback