Datasheet

Dual Serial UART with 128-Word FIFOs

MAX3109

46 Maxim Integrated

XON2 Register

The XON1 and XON2 register contents define the XON character for automatic XON/XOFF flow control and/or the

special characters used in special-character detection. See the FlowCtrl register description for more information.

Bits 7–0: Bitx

These bits define the XON2 character if single character auto software flow control is enabled in FlowCtrl[7:4]. If

double-character flow control is selected in FlowCtrl[7:4], these bits constitute the most significant byte of the 2-byte

XON 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 both special character detection and auto software flow control are enabled, XON2 defines a special character.

XOFF1 Register

The XOFF1 and XOFF2 register contents define the XOFF character for automatic XON/XOFF flow control and/or the

special characters used in special character detection. See the FlowCtrl register description for more information.

Bits 7–0: Bitx

These bits define the XOFF1 character if single character XOFF auto software flow control is enabled in FlowCtrl[7:4].

If double character flow control is selected in FlowCtrl[7:4], these bits constitute the least significant byte of the 2-byte

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 both special character detection and auto software flow control are both enabled, XOFF1 defines the XOFF flow

control character.

ADDRESS: 0x15

MODE: R/W

BIT 7 6 5 4 3 2 1 0

NAME

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0

RESET