XR17C158 Exar Corporation, XR17C158 Datasheet - Page 49

• Manufacturer Part Number: XR17C158
• Description: Eight-channel Pci-based (UART)
• Manufacturer: Exar Corporation

XR17C158
REV. 1.0.0
ORDERING INFORMATION
F
F
IGURE
IGURE
Transmit Trigger Level
TX Interrupt at
RX Data Ready Interrupt at
21. T
22. R
TX Data
Receive Trigger Level
RX Data Input
P
XR17C158CV
XR17C158IV
ART
RANSMIT
ECEIVE
PCI BUS OCTAL UART
N
UMBER
D
D
ATA
ATA
START
BIT
R
I
EADY
START
NTERRUPT AT
BIT
D0
Trigger Level
Set at Below
I
NTERRUPT AT
D0
D1
5 DATA BITS
BAUD RATE CLOCK of 16X or 8X
D1
T
RIGGER
6 DATA BITS
D2
7 DATA BITS
DATA BITS (5-8)
DATA BITS (5-8)
D2
T
below trigger level
RIGER
De-asserted at
144-TQFP
144-TQFP
P
L
D3
ACKAGE
EVEL
D3
49
L
EVEL
D4
D4
D5
D5
Trigger Level
Clear at
Above
D6
D6
D7
D7
O
PERATING
PARITY
PARITY
BIT
BIT
-40°C to +85°C
STOP
0°C to +70°C
BIT
PRELIMINARY
T
STOP
First byte that
EMPERATURE
BIT
above trigger
reaches the
trigger level
Asserted at
level
START
NEXT
DATA
BIT
RXFIFO1
TXNOFIFO-1
R
ANGR