XR17D154IV Exar Corporation, XR17D154IV Datasheet - Page 6

• Manufacturer Part Number: XR17D154IV
• Description: Universal QUART W/ PCI Bus Interface.
• Manufacturer: Exar Corporation

Specifications of XR17D154IV

• Features: *
• Number Of Channels: 4, QUART
• 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
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS Compliant

PIN DESCRIPTIONS
XR17D154
UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
N
OTE
N
GND
: Pin type: I=Input, O=Output, IO= Input/output, OD=Output Open Drain.
VIO
NC
AME
4, 19, 34, 45, 137
5,20,35,46,63,
47-54, 71, 72,
75-80, 91-98,
117-124
89,136
P
IN
#
PWR
PWR
T
YPE
PCI bus I/O power supply - 3.3V or 5V, detected by the auto-sense circuitry
of the XR17D154. This power supply determines the VOH level of the PCI
bus interface outputs.
(PCI 2.3 signalling compliant at both 3.3V and 5V operation, suitable for uni-
versal form factor add-in card application.)
Power supply common, ground.
No Connection. These pins are reserved and used by the octal PCI UARTs
XR17C158 and XR17D158.
6
D
ESCRIPTION
xr
REV. 1.2.2