Radicom Research Inc RB540 사용자 설명서
23
RB540HM (-a/-c) Interface Signal Definitions
Pin Name
Type
Description
Voltage Range
1
NC
-
-
-
2
KEY
No Pin
This Pin has been removed. Add a
key to the mating connector to prevent
the module from being
plugged in backwards.
key to the mating connector to prevent
the module from being
plugged in backwards.
-
3
PIO2
I
High to shutdown amplifier circuit
to save power consumption
to save power consumption
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V - 0.25 VDD
Vil: -0.3V - 0.25 VDD
4
PIO3
I
High to put speaker in quiescent
mode
mode
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25 VDD
Vil: -0.3V -0.25 VDD
5
LINEIN_DET
I
High indicates Audio Line thru
JK1 stereo jack. Low is Bluetooth
supported audio
JK1 stereo jack. Low is Bluetooth
supported audio
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25 VDD
Vil: -0.3V -0.25 VDD
6
VOL+
I
High to increase volume
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25 VDD
Vil: -0.3V -0.25 VDD
7
MUTE
I
Low to mute system
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25 VDD
Vil: -0.3V -0.25 VDD
8
CALL_END
I
High to End Call
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25 VDD
Vil: -0.3V -0.25 VDD
9
BAT_CHECK
I
Battery Check
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25 VDD
Vil: -0.3V -0.25 VDD
10
VOL-
I
High to decrease volume
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25 VDD
Vil: -0.3V -0.25 VDD
11
SPI_MOSI
I
SPI Signal, MOSI
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25VDD
Vil: -0.3V -0.25VDD
12
SPI_CLK
I
SPI Signal, CLK
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25 VDD
Vil: -0.3V -0.25 VDD
13
SPI_CS
I
SPI Signal, CS
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V -0.25 VDD
Vil: -0.3V -0.25 VDD
14
SPI_MISO
O
SPI Signal, MISO
Voh: 0.75VDD – VDD
Vol: 0 – 0.125V
Vol: 0 – 0.125V
15
PIO8
O
Active Low, LED 4
Voh: 0.75VDD – VDD
Vol: 0 – 0.125V
Vol: 0 – 0.125V
16
PIO4
O
Active Low, LED 3
Voh: 0.7 5VDD – VDD
Vol: 0 – 0.125V
Vol: 0 – 0.125V
17
3V3
P
3.3V
VDD: 3.1V – 3.6V
18
GND
-
Ground
19
VBAT
I
Battery input pin
VBAT: 3.3V – 4.4V
20
RESET
I
Active Low, must be low for at
least 5ms
least 5ms
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V – 0.25 VDD
Vil: -0.3V – 0.25 VDD
21
LED1
O
Active Low, Boot up sequence
indicator2
indicator2
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
Vol: 0 – 0.125V
22
LED0
O
Active Low, Boot up sequence
indicator1
indicator1
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
Vol: 0 – 0.125V
23
MIC
I
Microphone Input, input
impedance 6K Ohm.
impedance 6K Ohm.
4mV rms ~ 800mV rms
24
GND
-
GND
25
SPK_L_P
O
Speaker output Left Channel,
Up to 2Vpk-pk differential at a load of 16
ohm. Can drive at least
8 ohm speaker directly.
Up to 2Vpk-pk differential at a load of 16
ohm. Can drive at least
8 ohm speaker directly.
Full scale swing (Differential):
750 mV rms
750 mV rms
26
SPK_L_N
O
Speaker output Left Channel,
Up to 2Vpk-pk differential at a load of 16
ohm. Can drive at least
8 ohm speaker directly.
Up to 2Vpk-pk differential at a load of 16
ohm. Can drive at least
8 ohm speaker directly.
Full scale swing (Differential):
750 mV rms
750 mV rms
27
SPK_R_N
O
Speaker output Right Channel,
Up to 2Vpk-pk differential at a load of 16
ohm. Can drive at least
8 ohm speaker directly.
Up to 2Vpk-pk differential at a load of 16
ohm. Can drive at least
8 ohm speaker directly.
Full scale swing (Differential):
750 mV rms
750 mV rms
28
SPK_R_P
O
Speaker output Right Channel,
Up to 2Vpk-pk differential at a load of 16
ohm. Can drive at least
8 ohm speaker directly.
Up to 2Vpk-pk differential at a load of 16
ohm. Can drive at least
8 ohm speaker directly.
Full scale swing (Differential):
750 mV rms
750 mV rms