PEB24911HV13 Lantiq, PEB24911HV13 Datasheet - Page 79

• Manufacturer Part Number: PEB24911HV13
• Manufacturer: Lantiq

Specifications of PEB24911HV13

• Lead Free Status / Rohs Status: Supplier Unconfirmed

4
The scope of this section is to describe how the DFE-Q V2.1 works and behaves in the
system environment. Activation/ deactivation control procedures are exemplary given for
SW programmers reference.
4.1
There are two different ways to apply a reset,
• either as a hardware reset by setting pin RES to low
• or as a software reset by applying ’C/I= RES’
Hardware Reset
A hardware reset affects all design components and takes effect immediately
(asynchronous reset style). No clock signal other than the 15.36 MHz master clock is
required for reset execution.
Software Reset
C/I ’RES’ resets the receiver and the activation/deactivation state machine.
Transmission on U is stopped. It is an unconditional command and is therefore
applicable in any state.
Unlike a hardware reset, a software reset triggered by ’C/I= RES’ or ’C/I= RES1’ has only
effect on the addressed line port.
– C/I= RES resets the receiver and the activation/deactivation state machines. It is an
– C/I= RES1 resets all receiver functions. Transmission on U is stopped. EC-, and EQ-
The remaining line ports, the system interface, the relay driver/ status pins and other
global functions are not affected. Note that FSC and DCL clock signals must be provided
for the C/I code processing.
4.2
Each building block of the DFE-Q V2.1 is optimized with respect to power consumption
and support a power down mode. See
power consumption.
The DFE-Q V2.1 goes in power down mode if the U-transceiver is in state
DEACTIVATED. The DFE-Q V2.1 leaves power down mode when a wake up tone (TN)
has been detected on the U-interface for at least 800 µs.
• as the internal control logic of the activation/deactivation procedures are event driven
Data Sheet
unconditional command.
coefficients and AGC are set to zero. It is a conditional command.
power is saved as soon as one of the four lines transits in the ’Deactivated’ state
Operational Description
Reset
Power Down
Chapter 7.6.2
69
on
Page 139
Operational Description
for the specified max.
PEF 24911
2001-07-16