Specifications

AirPrime UMTS / LTE MC/SL-Series Extended AT Command Reference
156 Proprietary and Confidential 2130616
!AVTXPCMIIRFLTR
Supporting chipsets (voice-
enabled devices only):
• MDM6200 (min f/w rev:
P1_0_0_4)
• MSM6290 (min f/w rev:
K2_0_7_51ap)
• QSC6270 (min f/w rev: S2.0)
Note: For MDM8200A, see
!AVTXPCMIIRFLTR on page 177.
Set/report the Tx PCM IIR filter parameters
The modem has a multi-stage PCM (Pulse Code Modulation) IIR (Infinite Impulse
Response) filter. Use this command to set parameters for each stage of the specified
profile.
See “!AVRXPCMIIRFLTR” on page 148 for a description of using the filters.
Device-specific details:
• All chipsets/firmware revisions:
• The change takes effect immediately for the specified profile.
Usage:
• Execution: AT!AVTXPCMIIRFLTR=<profile>, <param>, <stages>
or AT!AVTXPCMIIRFLTR=<profile>, <param>, <a1>, <a2>, <b0>,
<b1>, <b2>
Response:
OK
Purpose: Set the number of stages for the filter, or set the parameters for a
specific stage.
• Query: AT!AVTXPCMIIRFLTR?<profile>, <param>
Response:
<stages>
or <a1>,<a2>,<b0>,<b1>,<b2>
OK
Purpose: Return the number of IIR filter stages, or the parameters for a
specific stage.
Parameters:
<profile> (Account profile number)
• MSM6290, QSC6270:
• 0=Handset
• 1=Headset
• 2=Car kit
• 3=Speaker phone
• 4=Auxiliary
• 5=TTY
• 6=Auxiliary external PCM (128 kHz clock)
• 7=Primary external PCM (2 MHz clock)
• MDM6200:
• 7=Primary external PCM (2 MHz clock)
<param> (Stage number)
• 0=Configure the number of <stages>
• 1–5
<stages> (Number of stages)
• 0–5
<a1> (IIR filter design parameter a1)
• Signed hexadecimal
• 0x00000000–0xFFFFFFFF
<a2> (IIR filter design parameter a2)
• Signed hexadecimal
• 0x00000000–0xFFFFFFFF
(Continued on next page)
Table 7-5: Voice command details (Continued)
Command Description