NXP Semiconductors
UM11490
Feature Configuration Guide for NXP-based Wireless Modules on i.MX 8M Quad EVK
Step 16 - Write PCM Link settings
root@imx8mqevk:~# hcitool -i hci0 cmd 0x3F 0x0029 0x04 0x00
Command output example:
< HCI Command: ogf 0x3f, ocf 0x0029, plen 2
04 00
> HCI Event: 0x0e plen 4
01 29 FC 00
root@imx8mqevk:~#
where:
Parameter
Length
Definition
OGF
1
0x3F
OCF
2
0x0029
PCM_Link_Setting 2
Bits [13:10]:
Each bit corresponds to 1 of 4 PCM timeslots (if 0, the slot is
used by the BTU)
Bits[9:2]:
Defines start of PCM slot relative to start of PCM
synchronization (must be greater than the size of the PCM slot)
Bits[1:0]:
Indicates which PCM slots should be used. Default:
•
0x0004 = first SCO link
•
0x0045 = second SCO link
•
0x0086 = third SCO link
Note:
The PCM Link settings command should be given after HCI reset and before
setting up the voice link. Also, if multiple voice links are supported, this command should
be given before setting up the voice link with the respective parameters of each voice
link.
UM11490
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User manual
Rev. 2 — 29 January 2021
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