MAX14830_15 Datasheet, PDF (48/68 Pages) Maxim Integrated Products – Quad Serial UART with 128-Word FIFOs

MAX14830
Quad Serial UART with 128-Word FIFOs
XOFF1 Register
ADDRESS:
0x16
MODE:
R/W
BIT
7
6
5
4
3
2
1
0
NAME
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
RESET
0
0
0
0
0
0
0
0
Bits 7–0: Bit[n]
These bits define the XOFF1 character if single character XOFF auto software flow control is enabled in FlowCntrl[7:4]. If
double character flow control is selected in FlowCntrl[7:4], these bits constitute the LSB of the XOFF character. If special
character detection is enabled in MODE2[4] and auto software flow control is not enabled, these bits define a special
character.
If special character detection and software flow control area both enabled, XOFF1 defines the XOFF flow control character.
The XOFF1 and XOFF2 register contents define the XOFF characters for automatic XON/XOFF flow control and/or spe-
cial characters used for special character detection. See details in the FlowCtrl register description.
XOFF2 Register
ADDRESS:
0x17
MODE:
R/W
BIT
7
6
5
4
3
2
1
0
NAME
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
RESET
0
0
0
0
0
0
0
0
Bits 7–0: Bit[n]
These bits define the XOFF2 character if auto software flow control is enabled in FlowCntrl[7:4]. If double character flow
control is selected in FlowCntrl[7:4], these bits constitute the MSB of the XOFF character. If special character detection is
enabled in MODE2[4] and auto flow control is not enabled, these bits define a special character. If both special character
detection and auto flow control are enabled (MODE2[4] and FlowCntrl[3]), these bits define a special character.
Each UART has four GPIOs that can be configured as inputs or outputs and can be operated in push-pull or open-drain
mode. The reference clock must be active for the GPIOs to work.
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