Datasheet

7Maxim Integrated
Quad Serial UART with 128-Word FIFOs
MAX14830
Functional Diagram
REGISTERS
AND
CONTROL
TX0
RX0
GPIO0
GPIO3
UARTO
4
CTS0
RTS0
TX1
RX1
GPIO4
GPIO7
UART1
CTS1
RTS1
TX2
RX2
GPIO8
GPIO11
UART2
CTS2
RTS2
SPI AND
I
2
C
INTERFACE
LDO
PLLDIVIDER
V
L
LOGIC-LEVEL
TRANSLATION
LDOEN
MOSI/A1
MISO/SDA
SCLK/SCL
TX3
RX3
GPIO12
GPIO15
UART3
CTS3
RTS3
V
A
V
EXT
V
18
TRANSMITTER
SYNC
LOGIC-LEVEL TRANSLATION
CRYSTAL
OSCILLATOR
4
FRACTIONAL
BAUD-RATE
GENERATOR
SPI/I
2
C
CS/A0
RST
IRQ
XIN
XOUT
DGNDAGND
MAX14830