Chapter 2
Channel Operation
M4K708 Module: User’s Manual
page 2 - 5
Write
Writing any value to the Global Software Reset register resets the whole module.
Write/
Read
The Global Configuration register is used to set the channel configuration and
select the self-test configuration.
The internal loopback configuration connects the channel’s digital internal input/
output signals. This mode can be used to check the whole channel’s logic by
transmitting /receiving test words in both directions. No data is transmitted over
the 708/453 bus in this mode.
This register is initialized to 0000 (H) at reset.
Write
Writing any value to the Global Start register will start both channels running
simultaneously
once
both channels are fully setup.
To start the channels individually, see section
2.3.3 Channel Start/Stop Register,
page 2-8.
2.2.2
Global Software Reset Register
Address:
00802 (H)
2.2.3
Global Configuration Register
Address:
00804 (H)
Bit
Bit Name
Description
04-15
Reserved
Set to 0
03
ST3
Reserved
02
ST
Self-test configuration
0 = No self-test
1 = Internal loopback configuration
01
CG1
Channel 1 Configuration set
0 = Receive
1 = Transmit
00
CG0
Channel 0 Configuration set
0 = Receive
1 = Transmit
Global Configuration Register
2.2.4
Global Start Register
Address:
00806 (H)
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