Справочник Пользователя для Radicom Research Inc RB4000
RB4000 Interface Signal Level Definitions
Note: I/O is DTE not DCE. RTS and CTS functionality is for Hardware Flow
Control.
Control.
13
Pin # Pin Name
Type
Description
I/O Voltage Range
1
GND
-
Ground
-
2 Reserved
-
3
GND
-
Ground
-
4
Reserved
-
5
Reserved
-
6
RESET
I
Reset if low for more than
5ms
5ms
Vil: 0V ~ 0.3 x VDD
Vih: 0.7 x VDD
Vih: 0.7 x VDD
7
SPI_MISO
O
Synchronous serial interface
data output
data output
Vol: 0V ~ 0.2V
Voh: VDD – 0.2V ~ VDD
Voh: VDD – 0.2V ~ VDD
8
SPI_CSB
I
Chip select for Synchronous
Serial Interface
active low
Serial Interface
active low
Vil: 0V ~ 0.3 x VDD
Vih: 0.7 x VDD
Vih: 0.7 x VDD
9
SPI_CLK
I
Synchronous serial interface
clock
clock
Vil: 0V ~ 0.3 x VDD
Vih: 0.7 x VDD
Vih: 0.7 x VDD
10
SPI_MOSI
I
Synchronous serial interface
data input
data input
Vil: 0V ~ 0.3 x VDD
Vih: 0.7 x VDD
Vih: 0.7 x VDD
11
UART_CTS
I
UART clear to send active
low
low
Vil: 0V ~ 0.3 x VDD
Vih: 0.7 x VDD
Vih: 0.7 x VDD
12
UART_TX
O
UART data output
Vol: 0V ~ 0.2V
Voh: VDD – 0.2V ~ VDD
Voh: VDD – 0.2V ~ VDD
13
UART_RTS
O
UART request to send
active low
active low
Vol: 0V ~ 0.2V
Voh: VDD – 0.2V ~ VDD
Voh: VDD – 0.2V ~ VDD
14
UART_RX
I
UART data input
Vil: 0V ~ 0.3 x VDD
Vih: 0.7 x VDD
Vih: 0.7 x VDD
15
Reserved
O
16
VDD
PWR
Supply voltage
2.2V ~ 4.2V
17
GND
-
Ground
18
Reserved
-
19
Reserved
-
20
Reserved
-
21
Reserved
-
22
Reserved
-
23
Reserved
-
24
Reserved
-
25
Reserved
-
26
Reserved
-
27
Reserved
-
28
Reserved
-
29
Reserved
-
30
Reserved
-
31
Reserved
-
32
Reserved
-
33
Reserved
-
34
Reserved
-
35
LINK LED
O
Link LED Output
Vol: 0V ~ 0.2V
Voh: VDD – 0.2V ~ VDD
Voh: VDD – 0.2V ~ VDD
36
GND
-
Ground
-