Rainbow Electronics MAX3107 - Manual (Page 50)

50 _____________________________________________________________________________________
MAX3107
SPI/I
2
C UART with 128-Word FIFOs
and Internal Oscillator
Figure 26. RS-232 Application
Figure 27. RS-485 Half-Duplex Application
MAX3107
TX
RX
Tx
Rx
SPI/I 2 C
MAX3078
T1IN
R1OUT
MICROCONTROLLER
RST
LDOEN
IRQ
RTS/CLKOUT
CTS
RTS
CTS
T2IN
R2OUT
GPIO1
GPIO2
DTR
DSR
T3IN
R3OUT
GPIO3
GPIO4
DCD
RI
R4OUT
R5OUT
MAX14840
A
B
DI
RO
RE
DE
MAX3107
TX
RX
XIN
XOUT
AGND DGND V 18
V A V EXT V L
IRQ
I 2 C/SPI
LDOEN
RST
SPI
3.3V
MICROCONTROLLER
RTS/CLKOUT
10kΩ
0.1µF
0.1µF