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3. Interface
3.3 UART(RS-232 Interface)
This module is provided with interface supporting Standard RS-232 protocol.
DCE(modem) communicate with DTE(host) through data or control AT-
Command.
Pin No.
37
39
7
8
3.4 USB
It is supported with universal serial bus for high data communication. And It
is satisfied with USB2.0 specification and supported with max.480Mbps
Pin No.
37
39
7
8
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Signal Name
UART_RXD
UART_TXD
UART_RFR
UART_CTS
Table 2. UART Pin descriptions
Signal Name
UART_RXD
UART_TXD
UART_RFR
UART_CTS
Table 3. USB Pin descriptions
Direction
I
O
O
I
Direction
I
O
O
I
Function
UART RX DATA
UART TX DATA
UART ready-for-receive
UART clear-to-send
Function
UART RX DATA
UART TX DATA
UART ready-for-receive
UART clear-to-send
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