XR17V258IV-F Exar Corporation, XR17V258IV-F Datasheet - Page 38

• 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

XR17V258
66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT
The 8 sets of UART configuration registers are decoded using address lines A9 to A11 as shown below.
Address lines A0 to A3 select the 16 registers in each channel. The first 8 registers are 16550 compatible with
EXAR enhanced feature registers located on the upper 8 addresses.
4.5
UART CHANNEL CONFIGURATION REGISTERS AND ADDRESS DECODING
F
IGURE
14. I
NTERNAL
L
OOP
A11
0
0
0
0
1
1
1
1
B
ACK
Transmit Shift
Receive Shift
A10
0
0
1
1
0
0
1
1
Register
Register
A9
38
0
1
0
1
0
1
0
1
DTR#
DSR#
RTS#
CTS#
CD#
RI#
MCR bit-4=1
UART
OP1#
OP2#
S
VCC
VCC
ELECTION
VCC
C
0
1
2
3
4
5
6
7
HANNEL
RX [7:0]
TX [7:0]
RTS# [7:0]
CTS# [7:0]
DSR# [7:0]
DTR# [7:0]
RI# [7:0]
CD# [7:0]
REV. 1.0.2