Datasheet

Dual Serial UART with 128-Word FIFOs
MAX3109
5Maxim Integrated
Table 1. StopBits Truth Table .................................................................... 40
Table 2. Lengthx Truth Table
....................................................................40
Table 3. SwFlow[3:0] Truth Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Table 4. PLLFactorx Selection Guide
.............................................................. 49
Table 5. GloblComnd Command Descriptions
...................................................... 53
Table 6. Extended Mode Addressing (SPI Only)
..................................................... 53
Table 7. SPI Command Byte Configuration
......................................................... 57
Table 8. I
2
C Address Map ...................................................................... 59
Receive Hold Register (RHR)
....................................................................29
Transmit Hold Register (THR)
....................................................................29
IRQ Enable Register (IRQEn)
....................................................................30
Interrupt Status Register (ISR)
................................................................... 31
Line Status Interrupt Enable Register (LSRIntEn)
..................................................... 32
Line Status Register (LSR)
......................................................................33
Special Character Interrupt Enable Register (SpclChrIntEn)
............................................ 34
Special Character Interrupt Register (SpclCharInt)
................................................... 35
STS Interrupt Enable Register (STSIntEn)
.......................................................... 36
Status Interrupt Register (STSInt)
................................................................. 37
MODE1 Register
.............................................................................. 38
MODE2 Register
............................................................................. 39
Line Control Register (LCR)
.....................................................................40
Receiver Timeout Register (RxTimeOut)
........................................................... 41
HDplxDelay Register
.......................................................................... 41
IrDA Register
................................................................................ 42
Flow Level Register (FlowLvl)
.................................................................... 42
FIFO Interrupt Trigger Level Register (FIFOTrgLvl) ................................................... 43
Transmit FIFO Level Register (TxFIFOLvl)
..........................................................43
Receive FIFO Level Register (RxFIFOLvl)
..........................................................43
Flow Control Register (FlowCtrl)
..................................................................44
XON1 Register
............................................................................... 45
XON2 Register
............................................................................... 46
XOFF1 Register
.............................................................................. 46
XOFF2 Register
.............................................................................. 47
GPIO Configuration Register (GPIOConfg)
......................................................... 47
LIST OF TABLES
LIST OF REGISTERS