XR17D158 Exar Corporation, XR17D158 Datasheet - Page 58

• Manufacturer Part Number: XR17D158
• Description: Eight-channel Pci-bus Uart
• Manufacturer: Exar Corporation

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PRELIMINARY
F
IGURE
18. PCI B
US
C
ONFIGURATION
H ost
H os t
C /BE [3:0]#
H ost
H ost
C /BE [3:0]#
H os t
H os t
H ost
H ost
H os t
H os t
FR A M E#
FR A M E#
A D[31:0]
A D[31:0]
D EV SEL #
D EV SEL #
TR D Y#
TR D Y#
IR DY #
IR DY #
C LK
C LK
Ta rg e t
Ta rg e t
T a rg e t
T a rg e t
Ta rg e t
T a rg e t
S
PACE
1
1
A D D R E S S
A D D R E S S
C F G -W R
C FG -R D
R
EGISTERS
2
2
58
B Y TE E N A B L E #
B Y TE E N A B L E #
UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART
W R IT E D A T A
R
EAD AND
3
3
D A TA
W
4
4
RITE OPERATION
P C IC F G _W R
P C IC FG _R D
XR17D158
REV. P1.0.0