xr88c681 Exar Corporation, xr88c681 Datasheet - Page 82
xr88c681
Manufacturer Part Number
xr88c681
Description
Cmos Dual Channel Uart Duart
Manufacturer
Exar Corporation
Datasheet
1.XR88C681.pdf
(101 pages)
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XR88C681
Transmitting Device
Receiving Device
IP2
RTSA
(OP0)
(RTS-in)
CTSA
OP3
(IP0)
(CTS-out)
TXDA
RXDB
TXRDY_A
(OP7)
To CPU
TXRDY_A
RTSA
CTSA
RXDA
Figure 44. Block Diagram and Timing Sequence of Two DUARTs Connected
in the Transmitter-RTS Controlled Configuration.
Rev. 2.11
82
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