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IXP400 Software
ADSL Driver
Programmer’s Guide IXP400 Software Version 2.0 April 2005
Document Number: 252539, Revision: 007 329
Step 1 of Figure 108 is only required if the client application wants to be notified when a line state
changes occurs.
Step 2 of Figure 108 is called by the client application to establish an ATU-R ADSL connection
with another modem. This function call performs the following actions within the private context
of the ADSL driver:
a. Invokes the private ixAdslDriverInit function which creates an ixAdslLineSupervisoryTask.
This task invokes the ixAdslLineStateMachine.
b. Invokes the private ixAdslUtilDeviceDownload function which downloads the STMicroelec-
tronics* ADSL firmware and configures the chipset.
c. Invokes the private ixAdslCtrleEnableModem function which enables the ADSL chipset to
start opening the line.
The client application can close an ADSL line by calling the ixAdslLineClose( ) API which will
disable the modem (i.e. close the line) but not kill the ixAdslLineSupervisoryTask.
Figure 108. Example of ADSL Line Open Call Sequence
ADSL Client
Line Open
1. ixAdslLineStateChangeCallbackRegister
(lineNum, lineChangeCallbackFn)
2. ixAdslLineOpen
(lineNum, lineType, phyType)
ADSL Driver
ADSL
Chipset
B2404-01