PI7C9X760ACLEX datasheet(31/53 Pages) DIODES

31 / 53 page

www.diodes.com

April 2019

Diodes Incorporated

PI7C9X760

Document Number DS40305 Rev 6-2

A product Line of

Diodes Incorporated

PI7C9X760

RI input status

Normally this bit is the complement of the RI# input.

In the loopback mode this bit is equivalent to MCR[2].

DSR input status

Normally this bit is the complement of the DSR# input.

In the loopback mode this bit is equivalent to MCR[0].

CTS input status

Normally this bit is the complement of the CTS# input.

In the loopback mode this bit is equivalent to MCR[1].

Delta CD# input flag

0 = No change on CD# input

1 = The CD# input has changed state. A modem status interrupt will be generated if MSR interrupt is

enabled.

Delta RI# input flag

0 = No change on RI# input

1 = The RI# input has changed from a LOW to HIGH. A modem status interrupt will be generated if

MSR interrupt is enabled.

Delta DSR# input flag

0 = No change on DSR# input

1 = The DSR# input has changed state. A modem status interrupt will be generated if MSR interrupt is

enabled.

Delta CTS# input flag

0 = No change on CTS# input

1 = The CTS# input has changed state. A modem status interrupt will be generated if MSR interrupt is

enabled.

Offset 06H: Transmission Control Register (TCR). Accessible when EFR[4]=1 and MCR[2]=1 and SFR[2]=0. De-

fault=00

Bit

Type

Description

[7:4]

RX FIFO Resume level.

When the RX FIFO is less than or equal to the value (decimal value of TCR[7:4] multiplied by 4), the

RTS# output will be re-asserted if Auto RTS flow is used or XON character will be transmitted if Auto

XON/XOFF flow control is used. It is recommended that this value is less than the RX Trigger Level.

[3:0]

RX FIFO Halt level.

When the RX FIFO is greater than or equal to the value (decimal value of TCR[3:0] multiplied by 4),

the RTS# output will be de-asserted if Auto RTS flow is used or XOFF character will be transmitted if

Auto XON/XOFF flow control is used. It is recommended that this value is greater than the RX Trig-

ger Level.

Offset 06H: XOFF1 character Register (XOFF1). Accessible when LCR=0xBF and SFR[2]=0. Default=00

Bit

Type

Description

[7:0]

XOFF1 character

Note: It is reset only when Power-On-Reset.

Configuration Registers cont..

PI7C9X760ACLEX Datasheet(PDF) 31 Page - Diodes Incorporated

PI7C9X760ACLEX Datasheet(HTML) 31 Page - Diodes Incorporated

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

Datasheet Download

Link URL