Audio Interface Control Register (Aud_Ctrl); Audio Interface Control Register (Aud_Ctrl) Field Descriptions - Texas Instruments TMS320C6A816 Series Technical Reference Manual

Control Module

1.16.1.3.17 Audio Interface Control Register (AUD_CTRL)

The AUD_CTRL Register controls features of the McASP and McBSP serial audio interfaces. It
determines how the AMUTEIN input of McASP1 and McAPS2 will be driven. This allows all McASPs to
share a common hardware mute input (MCA0_AMUTEIN) or have unique mute input controls. McASP0
always uses MCA0_AMUTEIN. The register also controls loopback of McBSP data for testing purposes.
The Audio Interface Control Register (AUD_CTRL) is shown in
Table 1-214.
31
15
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 1-214. Audio Interface Control Register (AUD_CTRL) Field Descriptions
Bit Field
31-18 Reserved
17 MCB_LBFSX
16 MCB_LBCLKX
15-3 Reserved
2 ASP2MUTESRC
1 ASP1MUTESRC
0 Reserved
314
Chip Level Resources
Preliminary
Figure 1-173. Audio Interface Control Register (AUD_CTRL)
Reserved
R-0
Reserved
R-0
Value Description
0 Reserved. Read returns 0.
McBSP FSX Loopback enable – Drives McBSP PIALBCTRLRX[1].
0 No loopback.
1 Enable loopback.
McBSP CLKX Loopback enable – Drives McBSP PIALBCTRLRX[0].
0 No loopback.
1 Enable loopback.
0 Reserved. Read returns 0.
McASP2 AMUTEIN source select.
0 Use MCA2_AMUTEIN
1 Use MCA0_AMUTEIN
McASP1 AMUTEIN source select.
0 Use MCA1_AMUTEIN.
1 Use MCA0_AMUTEIN.
0 Reserved. Read returns 0.
© 2011, Texas Instruments Incorporated
Figure 1-173 and described in
18
MCB_LBFSX
3 2
ASP2MUTESRC ASP1MUTESRC
R/W-0
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17 16
MCB_LBCLKX
R/W-0 R/W-0
1 0
Reserved
R/W-0 R-0
SPRUGX9 – 15 April 2011