McASP Registers
22.4.1.10 Audio Mute Control Register (AMUTE)
The audio mute control register (AMUTE) controls the McASP audio mute (AMUTE) output pin. The value
after reset for register 4 depends on how the pins are being driven. The AMUTE is shown in
and described in
Figure 22-48. Audio Mute Control Register (AMUTE)
31
16
Reserved
R-0
15
13
12
11
10
9
8
Reserved
XDMAERR
RDMAERR
XCKFAIL
RCKFAIL
XSYNCERR
R-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
7
6
5
4
3
2
1
0
RSYNCERR
XUNDRN
ROVRN
INSTAT
INEN
INPOL
MUTEN
R/W-0
R/W-0
R/W-0
R-0
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 22-21. Audio Mute Control Register (AMUTE) Field Descriptions
Bit
Field
Value
Description
31-13
Reserved
0
Reserved. The reserved bit location always returns the default value. A value written to this field has no
effect. If writing to this field, always write the default value for future device compatibility.
12
XDMAERR
If transmit DMA error (XDMAERR), drive AMUTE active enable bit.
0
Drive is disabled. Detection of transmit DMA error is ignored by AMUTE.
1
Drive is enabled (active). Upon detection of transmit DMA error, AMUTE is active and is driven
according to MUTEN bit.
11
RDMAERR
If receive DMA error (RDMAERR), drive AMUTE active enable bit.
0
Drive is disabled. Detection of receive DMA error is ignored by AMUTE.
1
Drive is enabled (active). Upon detection of receive DMA error, AMUTE is active and is driven
according to MUTEN bit.
10
XCKFAIL
If transmit clock failure (XCKFAIL), drive AMUTE active enable bit.
0
Drive is disabled. Detection of transmit clock failure is ignored by AMUTE.
1
Drive is enabled (active). Upon detection of transmit clock failure, AMUTE is active and is driven
according to MUTEN bit
9
RCKFAIL
If receive clock failure (RCKFAIL), drive AMUTE active enable bit.
0
Drive is disabled. Detection of receive clock failure is ignored by AMUTE.
1
Drive is enabled (active). Upon detection of receive clock failure, AMUTE is active and is driven
according to MUTEN bit.
8
XSYNCERR
If unexpected transmit frame sync error (XSYNCERR), drive AMUTE active enable bit.
0
Drive is disabled. Detection of unexpected transmit frame sync error is ignored by AMUTE.
1
Drive is enabled (active). Upon detection of unexpected transmit frame sync error, AMUTE is active and
is driven according to MUTEN bit.
7
RSYNCERR
If unexpected receive frame sync error (RSYNCERR), drive AMUTE active enable bit.
0
Drive is disabled. Detection of unexpected receive frame sync error is ignored by AMUTE.
1
Drive is enabled (active). Upon detection of unexpected receive frame sync error, AMUTE is active and
is driven according to MUTEN bit.
6
XUNDRN
If transmit underrun error (XUNDRN), drive AMUTE active enable bit.
0
Drive is disabled. Detection of transmit underrun error is ignored by AMUTE.
1
Drive is enabled (active). Upon detection of transmit underrun error, AMUTE is active and is driven
according to MUTEN bit.
3844
Multichannel Audio Serial Port (McASP)
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated