Radicom Research Inc RB540 用户手册
19
RB540 Series SMD Module Interface Signal Definitions
Pin#
Pin Name
Type
Description
I/O Voltage range
1
GND
-
Ground
---
2
RF
I/O
RF input/output
---
3
GND
-
Ground
---
4
GND
-
Ground
---
5
3V3
I
3.3V input
VDD: 3.1V – 3.6V
6
GND
-
Ground
---
7
PIO(3)
I/O
Programmable I/O line
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
8
PIO(2)
I/O
Programmable I/O line
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
9
AIO(1)
I/O
Programmable I/O line
Range: 0V ~ 1.5V
10
AIO(0)
I/O
Programmable I/O line
Range: 0V ~ 1.5V
11
UART_CTS
I
UART clear to send, active low
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V – 0.25 VDD
Vil: -0.3V – 0.25 VDD
12
UART_RTS
O
UART request to send, active low
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
Vol: 0 – 0.125V
13
PIO(10)
I/O
Programmable I/O line
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
14
UART_TX
I
UART data output, active low
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
Vol: 0 – 0.125V
15
UART_RX
O
UART data input, active low (idle status high)
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V - 0.25 VDD
Vil: -0.3V - 0.25 VDD
16
CALL_END
PIO(15)
PIO(15)
I/O
Programmable I/O line
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
17
USB_DN
I/O
USB Data Negative
Vih: 0.7 VDD – VDD
Vil: 0V - 0.3 VDD
Voh: 2.8V – VDD
Vol: 0 – 0.2V
Vil: 0V - 0.3 VDD
Voh: 2.8V – VDD
Vol: 0 – 0.2V
18
USB_DP
I/O
USB Data Positive
Vih: 0.7 VDD – VDD
Vil: 0V - 0.3 VDD
Voh: 2.8V – VDD
Vol: 0 – 0.2V
Vil: 0V - 0.3 VDD
Voh: 2.8V – VDD
Vol: 0 – 0.2V
19
LINEIN_DET
PIO(9)
PIO(9)
I/O
Programmable I/O line
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
Vil: -0.3V – 0.25 VDD
Voh: 0.75 VDD – VDD
Vol: 0 – 0.125V
20
SPI_MOSI
I
Synchronous serial interface data input
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V - 0.25 VDD
Vil: -0.3V - 0.25 VDD
21
SPI_CLK
I
Synchronous serial interface Clock
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V - 0.25 VDD
Vil: -0.3V - 0.25 VDD
22
SPI_CSB
I
Chip select for Synchronous Serial interface
Vih: 0.625 VDD – VDD + 0.3V
Vil: -0.3V - 0.25 VDD
Vil: -0.3V - 0.25 VDD