Cermetek CH232BGN, Руководство пользователя

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Cermetek Microelectronics, Inc Page 5 of 42 Document NO. 607-00xx Revision A (12/13)
Table 2: CH232BGN Pin Descriptions
Pin Description Name Direction Notes
1,2 VCC 3.5V Power 3.3V maximum 350 mA
power input
3 Ground GND Power Ground
4 UART Receive Data UART_RXD Output If the UART is not used this
pin can serve as a general
purpose I/O
General Purpose I/O GPIO3 Input/Output
5 UART Transmit Data UART_TXD Input If the UART is not used this
pin can serve as a general
purpose I/O
General Purpose I/O GPIO4 Input/Output
6 UART Clear to Send UART_CTS Output If the UART is not used this
pin can serve as a general
purpose I/O
General Purpose I/O GPIO5 Input/Output
7 UART Request to Send UART_RTS Input If the UART is not used this
pin can serve as a general
purpose I/O
General Purpose I/O GPIO6 Input/Output
8 Ethernet Tr Output 1.8 Volt Ethernet Data I/F
9 Ethernet Transmit - PHY_TX- Output 1.8 Volt Ethernet Data I/F
10 Ethernet R Input 1.8 Volt Ethernet Data I/F
11 Ethernet Receive - PHY_RX- Input 1.8 Volt Ethernet Data I/F
12, 13 No Connection NC NC Do not Connect
14 WiFi Status Indicator Nlink Output High
– WiFi Link available
Low
– No WiFi Link
15 Reset nRST Input Active low; must be held for a
minimum of 300 msec
16 Boot Status nReady Output Active low boot sequence
complete; a high indicates
boot in progress
17 Restore Factory Defaults nReload Input Holding this pin low for more
than 1 second resets the
configuration to the factory
defaults
18,19,
20
Ground GND Power Ground
21, 22 No Connection NC NC Do not Connect
23 1.8 Volt Output 1.8V Output 1.8V 300 mA power for
Ethernet connection
24 Ground GND Power Ground
25 Antenna Connection ANT Output 50 ohm impedance for
antenna connection
26 Ground GND Power Ground