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Evaluation Board J1 Connector Pin Functions
PIN #
PIN NAME
DIRECTION
DESCRIPTION
Notes
30
RS232_TX
OUT
RS232 Signal
3V Max
29
RS232_RX
IN
RS232 Signal
3V Max
28
RS232_DTR
IN
RS232 Signal
3V Max
27
RS232_DCD
OUT
RS232 Signal
3V Max
26
RS232_GND
IN
Signal Ground
25
RS232_RTS
IN
RS232 Signal
3V Max
24
RS232_CTS
OUT
RS232 Signal
3V Max
23
RS232_DSR
OUT
RS232 Signal
3V Max
22
RS232_RI
OUT
RS232 Signal
3V Max
21
EXT_MIC
IN
Audio input to iO1500R
20
AUDIO_COMMON
IN
Analog Ground
19
AUDIO_OUT
OUT
iO1500R Audio Out
18
OPT_SELECT_1
I/O (22K pull-up)
iO1500R configuration
Control Signal
17
OPT_SELECT_2
I/O (22K pull-up)
iO1500R configuration
Control Signal
16
MUX_CNTL
IN (69K pull-down)
Logic “0” (Mfgr.use)
Control Signal
15
OPTION_3V
OUT
Regulated 3.0V Output
14
OEM ON-OFF
IN (15K pull-down)
Power On/Off
External On/Off
3.6V±5% Max
13
MOD
IN (22K pull-down)
Programming signal
3V Max
12
BAT_VCC
IN
3.6V iO1500R Power
11
BAT_VCC
IN
3.6V iO1500R Power
10
BAT_VCC
IN
3.6V iO1500R Power
9
BAT_VCC
IN
3.6V iO1500R Power
8
BAT_VCC
IN
3.6V iO1500R Power
7
RED_LED
OUT
Out-Of-Range indication
3V±2.5%
6
GREEN_LED
OUT
In-Range indication
3V±2.5%
5
BAT_GND
IN
Ground
4
BAT_GND
IN
Ground
3
BAT_GND
IN
Ground
2
BAT_GND
IN
Ground
1
BAT_GND
IN
Ground