xr17v254 Exar Corporation, xr17v254 Datasheet - Page 62

• Manufacturer Part Number: xr17v254
• Description: 66mhz Pci Bus Quad Uart With Power Management Support
• Manufacturer: Exar Corporation

XR17V254
66MHZ PCI BUS QUAD UART WITH POWER MANAGEMENT SUPPORT
F
TION
IGURE
Note: PERR# and SERR are optional in a bus target application.
Host
AD[31:0]
Host
C/BE[3:0]#
DEVSEL#
FRAME#
Host
Host
Host
Host
IRDY#
TRDY#
PERR#
SERR#
21. D
CLK
Even Parity is on AD[31:0], C/BE[3:0]#, and PAR
Target
Target
PAR
Target
Target
Target
Target
EVICE
1
Address
CMD
Bus
C
ONFIGURATION REGISTERS
2
DWORD
Address
Parity
Data
Byte Enable# = DWORD
3
DWORD
Active
Parity
Data
Data
4
DWORD
Active
Parity
Data
Data
, UART R
5
DWORD
Active
Parity
Data
Data
62
EGISTERS AND
6
Active
Parity
Data
Data DWORD
7
Active
T
RANSMIT
8
D
9
ATA
Parity
Data
B
URST
10
Active
W
RITE
11
PCI BWR
REV. 1.0.0
O
PERA
-