User's Manual

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
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
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
12 UART_RTS O UART request to send, active low
Voh: 0.75 VDD – VDD
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
14 UART_TX I UART data output, active low
Voh: 0.75 VDD – VDD
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
16
CALL_END
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
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
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
19
LINEIN_DET
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
20 SPI_MOSI I Synchronous serial interface data input
Vih: 0.625 VDD – VDD + 0.3V
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
22 SPI_CSB I Chip select for Synchronous Serial interface
Vih: 0.625 VDD – VDD + 0.3V
Vil:
-
0.3V
-
0.25
VDD