XR17V258IV-F Exar Corporation, XR17V258IV-F Datasheet - Page 23

• Manufacturer Part Number: XR17V258IV-F
• Description: IC UART PCI BUS OCTAL 144LQFP
• Manufacturer: Exar Corporation
• Type: Octal UARTr

Specifications of XR17V258IV-F

• Number Of Channels: 8
• Package / Case: 144-LQFP
• Features: *
• Fifo's: 64 Byte
• Protocol: RS485
• Voltage - Supply: 3.3V, 5V
• With Auto Flow Control: Yes
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• Mounting Type: Surface Mount
• Data Rate: 8 Mbps
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Supply Current: 4 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 45 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3 V to 3.6 V
• No. Of Channels: 8
• Uart Features: Tx/Rx FIFO Counters
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 144
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

REV. 1.0.2
Each bit selects 8X or 16X sampling rate for that UART channel, bit [0] is channel 0. Logic 0 (default) selects
normal 16X sampling with logic one selects 8X sampling rate. Transmit and receive data rates will double by
selecting 8X.
The 8-bit Reset register [RESET] provides the software with the ability to reset the UART(s) when there is a
need. Each bit is self-clearing after it is written a logic 1 to perform a reset to that channel. All registers in that
channel will be reset to the default condition, see
F
1.6.3
1.6.4
1.6.5
IGURE
Re-triggerable
One-shot Mode
Mode
8. I
8XMODE [7:0] (default 0x00)
REGA [15:8] (default 0x00) Reserved
RESET [23:16] (default 0x00)
NTERRUPT
O
UTPUT
Timer Started
(
ACTIVE
66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT
Ch-7
Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
Ch-7
Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
Individual UART Channel 8X Clock Mode Enable
Ch-6
LOW)
Individual UART Channel Reset Enable
Ch-6
Ch-5 Ch-4 Ch-3 Ch-2 Ch-1 Ch-0
Ch-5 Ch-4 Ch-3 Ch-2 Ch-1 Ch-0
IN
8XMODE Register
RESET Register
O
NE
Table 22
Timer Timed
-S
Out
23
HOT AND
for details. .
R
TIMERCNTL
E
-
TRIGGERABLE
read
Timer Timed
Out
M
ODES
TIMERCNTL
read
XR17V258
Timer Timed
Out