XR16M581 Exar Corporation, XR16M581 Datasheet - Page 6

• Manufacturer Part Number: XR16M581
• Description: 1.62V To 3.63V UART
• Manufacturer: Exar Corporation

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XR16M581
1.62V TO 3.63V UART WITH 16-BYTE FIFO AND VLIO INTERFACE
The CPU interface is a VLIO bus interface. The VLIO bus interface is an 8-bit multiplexed address/data bus
interface. Each bus cycle is asynchronous using CS#, LLA# and IOR# or IOW# inputs. A typical data bus
interconnection for the VLIO bus interface is shown in
F
2.0 FUNCTIONAL DESCRIPTIONS
2.1
IGURE
UART_RESET#
POWERSAVE
UART_IOW#
UART_IOR#
UART_CS#
3. XR16M581 T
CPU Interface
UART_INT
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
YPICAL
VLIO D
ATA
B
US
I
NTERCONNECTIONS
Figure
6
PWRSAVE
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
RESET#
IOW#
IOR#
CS#
INT
3.
DTR#
DSR#
RTS#
CTS#
GND
CD#
VCC
RI#
TX
RX
VCC
Serial Transceivers of
Or Infrared
RS-232
RS-485
RS-422
REV. 1.0.0