XR17D154IV Exar Corporation, XR17D154IV Datasheet - Page 59

• 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

xr
REV. 1.2.2
F
IGURE
Host
Note: PERR# and SERR are optional in a bus target application.
AD[31:0]
DEVSEL#
Host
C/BE[3:0]#
FRAME#
21. D
Host
Host
Host
Host
IRDY#
TRDY#
PERR#
SERR#
CLK
Even Parity is on AD[31:0], C/BE[3:0]#, and PAR
Target
Targe
PAR
Target
Target
Target
t
Target
EVICE
1
C
Address
CMD
ONFIGURATION AND
Bus
2
Address
Parity
Byte Enable# = BYTE
3
Active
UART R
4
EGISTERS
5
BYTE
Data
59
UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
6
R
Parity
Data
EAD
Byte Enable# = DWORD
O
7
PERATION FOR A
Active
8
WORD
Data
9
Parity
Data
B
YTE OR
10
Active
DWORD
11
PCI_RD1
XR17D154