Specifications

Rev 2.0 Apr.10 Proprietary and Confidential 103
C
C: MC5728V Important Signal Consider-
ations - Application Note
MDL_RESET_N — Module reset
input
The MDL_RESET_N signal (pin 33) is an input to the MC5728V
module from the host device to initiate a reset of the module.
When integrating with your host device, keep the following in mind.
• This signal is an input to the module and should be driven LOW
only for its active state (RESET); otherwise it should be floating
or (High impedance). It should never be driven to a logic high
level. At module power-up, the Baseband processor holds this
signal LOW for a pre-determined time; the host must not interfere
with this sequence (by attempting to drive the signal HIGH). If the
host does not comply with this, unwanted behavior and an
unknown state of the module may occur.
• If the host never needs to assert a reset to the MC5728V module,
leave this signal unconnected from the host interface. The figure
below shows good design practice for connecting the
MDL_RESET_N signal. This allows for open collector output
when not being asserted by the host device.
Figure C-1: Recommended MDL_RESET_N connection