xr17l152im Exar Corporation, xr17l152im Datasheet - Page 41
![no-image](/images/manufacturer_photos/0/2/243/exar_corporation_sml.jpg)
xr17l152im
Manufacturer Part Number
xr17l152im
Description
3.3v Pci Bus Dual Uart
Manufacturer
Exar Corporation
Datasheet
1.XR17L152IM.pdf
(55 pages)
- Current page: 41 of 55
- Download datasheet (514Kb)
XR17L152
3.3V PCI BUS DUAL UART
REV. 1.1.0
FCTR [3:0] - Auto RTS/DTR Flow Control Hysteresis Select
These bits select the auto RTS/DTR flow control hysteresis and only valid when TX and RX Trigger Table-D is
selected (FCTR bit-6 and 7 are set to logic 1). The RTS/DTR hysteresis is referenced to the RX FIFO trigger
level. After reset, these bits are set to logic 0 selecting the next FIFO trigger level for hardware flow control.
Table 16
FCTR[4]: Infrared RX Input Logic Select
FCTR[5]: Auto RS485 Enable
This bit overrides the EN485# pin selection.
Auto RS485 half duplex control enable/disable.
Logic 0 = Select RX input as active high encoded IrDA data, normal, (default).
Logic 1 = Select RX input as active low encoded IrDA data, inverted.
Logic 0 = Standard ST16C550 mode. Transmitter generates an interrupt when transmit holding register
(THR) becomes empty. Transmit Shift Register (TSR) may still be shifting data bit out.
Logic 1 = Enable Auto RS485 half duplex direction control. RTS# output changes its logic level from 1 to 0
when finished sending the last stop bit of the last character out of the TSR register. It changes back to logic
level 1 from 0 when a data byte is loaded into the THR or transmit FIFO. The change to logic 1 occurs prior
sending the start-bit. It also changes the transmitter interrupt from transmit holding to transmit shift register
(TSR) empty.
below shows the 16 selectable hysteresis levels.
T
ABLE
FCTR B
16: 16 S
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
IT
-3 FCTR B
ELECTABLE
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
IT
-2 FCTR B
H
YSTERESIS
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
IT
-1 FCTR B
L
EVELS
41
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
W
IT
HEN
-0
T
RIGGER
RTS/DTR H
(
CHARACTERS
T
ABLE
+/- 16
+/- 24
+/- 32
+/- 12
+/- 20
+/- 28
+/- 36
+/- 40
+/- 44
+/- 48
+/- 52
+/- 4
+/- 6
+/- 8
+/- 8
0
YSTERESIS
-D
IS
DISCONTINUED
)
S
ELECTED
áç
áç
áç
áç
Related parts for xr17l152im
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![MP7226KN](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
BiCMOS Fixed, Quad, Voltage Output, Single or Dual Supply 8-Bit Digital-to-Analog Converter
Manufacturer:
Exar Corporation
Datasheet:
![SP310ACP](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Exar Corporation
Datasheet:
![XR2207M](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
Voltage-Controlled Oscillator
Manufacturer:
Exar Corporation
Datasheet:
![XRT7296IP](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
INTEGRATED LINE TRANSMITTER
Manufacturer:
Exar Corporation
Datasheet:
![XR2206CP](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Function Generator
Manufacturer:
Exar Corporation
Datasheet:
![MP1230ABN](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
CMOS Microprocessor Compatible Double-Buffered 12-Bit Digital-to-Analog Converter
Manufacturer:
Exar Corporation
Datasheet:
![MP7686JN](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
CMOS 6 BIT HIGH SPEED ANALOG TO DIGITAL CONVERTER
Manufacturer:
Exar Corporation
Datasheet:
![SP232ACP](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Exar Corporation
Datasheet:
![SP232AEP](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Exar Corporation
Datasheet:
![MP7651AN](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
8-Channel, Voltage Output 10 MHz Input Bandwidth 8-Bit Multiplying DACs with Serial Digital Data Por
Manufacturer:
Exar Corporation
Datasheet:
![MP7533JN](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
15 V CMOS Multiplying10-Bit Digital-to-Analog Converter
Manufacturer:
Exar Corporation
Datasheet:
![XR2206M](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Function Generator
Manufacturer:
Exar Corporation
Datasheet:
![MP7682](/images/manufacturer_photos/0/2/243/exar_corporation_tmb.jpg)
Part Number:
Description:
CMOS, 6-Bit High-Speed Analog-to-digital Converter
Manufacturer:
Exar Corporation
Datasheet: