Datasheet

SPI/I

C UART with 128-Word FIFOs

MAX3107

39Maxim Integrated

The XON1 and XON2 register contents define the XON characters for auto XON/XOFF flow control and/or the special

characters used in special character detection. See details in the FlowCtrl register description.

Bits 7–0: Bit[7:0]

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

ble-character flow control is selected in FlowCntrl[7:4], these bits constitute the MSB of the 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 (MODE2[4] and FlowCntrl[3]),

these bits define a special character.

The XOFF1 and XOFF2 register contents define the XOFF characters for auto XON/XOFF flow control and/or the special

characters used in special character detection. See details in the FlowCtrl register description.

Bits 7–0: Bit[7:0]

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 are both enabled, XOFF1 defines the XOFF

flow control character.

XON2 Register

XOFF1 Register

ADDRESS: 0x15

MODE: R/W

BIT 7 6 5 4 3 2 1 0

NAME

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0

RESET