Chapter 2
Channel Operation
page 2 - 8
Excalibur Systems
Write/
Read
The Channel Control register sets the parameters for the Channel Receive and
Transmit modes.
This register is initialized to 0000 (H) at reset.
Write/
Read
Writing to the Channel Start/Stop Register starts or stops the channel running.
This register is initialized to 0000 (H) at reset.
2.3.2
Channel Control Register
Address:
xx002 (H)
Bit
Bit Name
Description
02–15
Reserved
Set to 0
00-01
RNM
Tx Run Mode
00 = One-shot mode (single word)
01 = Continuous mode (as long as Tx FIFO not empty)
10 = Continuous FIFO retransmit mode
11 = Reserved
Channel Control Register
2.3.3
Channel Start/Stop Register
Address:
xx004 (H)
Bit
Bit Name
Description
01–15
Reserved Set
to
0
00
STR
Start/Stop
0 = Stop channel transmission/reception at the end of
current word processing
1 = Start the channel transmission/reception
In transmit one-shot mode this bit is automatically
cleared
Channel Start/Stop Register
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