xr16m770il32 Exar Corporation, xr16m770il32 Datasheet - Page 6
xr16m770il32
Manufacturer Part Number
xr16m770il32
Description
1.62v To 3.63v High Performance Uart With 64-byte Fifo
Manufacturer
Exar Corporation
Datasheet
1.XR16M770IL32.pdf
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XR16M770
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 64-BYTE FIFO
The CPU interface is 8 data bits wide with 3 address lines and control signals to execute data bus read and
write transactions. The M770 data interface supports the Intel compatible types of CPUs. No clock (oscillator
nor external clock) is required for a data bus transaction. Each bus cycle is asynchronous using CS#, IOR#
and IOW# inputs. A typical data bus interconnection for Intel mode is shown in
F
2.0 FUNCTIONAL DESCRIPTIONS
2.1
IGURE
3. XR16M770 T
CPU Interface
UART_RESET
POWERSAVE
UART_CS#
UART_INT
IOW#
IOR#
A0
A1
A2
D0
D1
D2
D3
D4
D5
D6
D7
YPICAL
I
NTEL
D
ATA
Intel Data Bus Interconnections
B
US
I
NTERCONNECTIONS
6
IOR#
IOW#
PwrSave
CS#
D0
D1
D2
D3
D4
D5
D6
D7
INT
RESET
A0
A1
A2
DTR#
DSR#
RTS#
CTS#
GND
CD#
VCC
RI#
TX
RX
Figure
VCC
Serial Transceivers of
3.
Or Infrared
RS-232
RS-485
RS-422
REV. 1.0.0
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