XR16V2750IM datasheet(10/52 Pages) EXAR

Part #	XR16V2750IM

Description	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO

Download	52 Pages

Scroll/Zoom	100%

Manufacturer	EXAR [Exar Corporation]

Direct Link	http://www.exar.com

Logo

10 / 52 page

XR16V2750

10

HIGH PERFORMANCE DUART WITH 64-BYTE FIFO

REV. 1.0.2

2.8

INTA and INTB Outputs

The INTA and INTB interrupt output changes according to the operating mode and enhanced features setup.

Table 3 and 4 summarize the operating behavior for the transmitter and receiver. Also see Figures 17

through 22.

2.9

Crystal Oscillator or External Clock Input

The V2750 includes an on-chip oscillator (XTAL1 and XTAL2) to produce a clock for both UART sections in the

device. The CPU data bus does not require this clock for bus operation. The crystal oscillator provides a

system clock to the Baud Rate Generators (BRG) section found in each of the UART. XTAL1 is the input to the

oscillator or external clock buffer input with XTAL2 pin being the output. Please note that the input XTAL1 is not

5V tolerant and so the maximum at the pin should be VCC. For programming details, see ““Section 2.10,

Programmable Baud Rate Generator with Fractional Divisor” on page 11.”

TABLE 3: INTA AND INTB PINS OPERATION FOR TRANSMITTER

Auto RS485

Mode

FCR BIT-0 = 0

(FIFO DISABLED)

FCR BIT-0 = 1 (FIFO ENABLED)

INTA/B Pin

NO

LOW = a byte in THR

HIGH = THR empty

LOW = FIFO above trigger level

HIGH = FIFO below trigger level or FIFO empty

INTA/B Pin

YES

LOW = a byte in THR

HIGH = transmitter empty

LOW = FIFO above trigger level

HIGH = FIFO below trigger level or transmitter empty

TABLE 4: INTA AND INTB PIN OPERATION FOR RECEIVER

FCR BIT-0 = 0

(FIFO DISABLED)

FCR BIT-0 = 1

(FIFO ENABLED)

INTA/B Pin

LOW = no data

HIGH = 1 byte

LOW = FIFO below trigger level

HIGH = FIFO above trigger level

FIGURE 4. TYPICAL OSCILLATOR CONNECTIONS

C1

22-47 pF

C2

22-47 pF

Y1

1.8432 MHz

to

24 MHz

R1

0-120

Ω

(Optional)

R2

500ΚΩ−1ΜΩ

XTAL1

XTAL2

Similar Part No. - XR16V2750IM

Manufacturer	Part #	Datasheet	Description
Exar Corporation	XR16V2750IM	990Kb / 51P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
Exar Corporation	XR16V2750IM	989Kb / 52P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO

More results

Similar Description - XR16V2750IM

Manufacturer	Part #	Datasheet	Description
Exar Corporation	XR16V2750	990Kb / 51P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
	XR16M752	1Mb / 54P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
	XR16V2750_0709	989Kb / 52P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
	XR16V2752	1,016Kb / 51P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
	XR16V2752	998Kb / 51P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
	XR16M752	1Mb / 51P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
	XR16M2752	1,016Kb / 52P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
	XR16V2751_0709	1,016Kb / 52P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE
	XR16M2751	1,023Kb / 52P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE
	XR16V2751	1,002Kb / 52P	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE

More results

XR16V2750IM Datasheet(PDF) 10 Page - Exar Corporation

XR16V2750IM Datasheet(HTML) 10 Page - Exar Corporation

Similar Part No. - XR16V2750IM

Similar Description - XR16V2750IM

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

Datasheet Download

Link URL