Rainbow Electronics MAX3107 - Manual (Page 39)

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MAX3107
SPI/I
2
C UART with 128-Word FIFOs
and Internal Oscillator
The XON1 and XON2 register contents define the XON characters for automatic 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 automatic 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 XON character. If spe-
cial character detection is enabled in MODE2[4], and automatic software flow control is not enabled, these bits define
a special character. If both special character detection and automatic 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 automatic 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 automatic 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 automatic 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 0 0 0 0 0 0 0 0
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