A6850 ALTERA [Altera Corporation], A6850 Datasheet - Page 3

• Manufacturer Part Number: A6850
• Description: Asynchronous Communications Interface Adapter
• Manufacturer: ALTERA [Altera Corporation]

Altera Corporation
Functional
Description
Figure 2. a6850 Block Diagram
rnw
nirq
do
cs
rs
di
e
3
Interface
Contro
8
Bus
l
8
8
Figure 2
Registers
The a6850 contains the following registers:
8
8
Transmitter data register
Receiver data register
Control register
Status register
Transmitter
Receiver
Register
Register
Register
a6850 Asynchronous Communications Interface Adapter Data Sheet
Register
Control
Status
shows the a6850 block diagram.
Data
Data
8
8
Transmitter
Generate
Register/
Register/
Receiver
Control
Output
Control
Check
Parity
Parity
Input
Shift
Shift
Transmitter
Receiver
txclk
txdata
ncts
ndcd
nrts
rxdata
rxclk
83