McASP Registers
Table 22-21. Audio Mute Control Register (AMUTE) Field Descriptions (continued)
Bit
Field
Value
Description
5
ROVRN
If receiver overrun error (ROVRN), drive AMUTE active enable bit.
0
Drive is disabled. Detection of receiver overrun error is ignored by AMUTE.
1
Drive is enabled (active). Upon detection of receiver overrun error, AMUTE is active and is driven
according to MUTEN bit.
4
INSTAT
Determines drive on AXRn pin when PFUNC[n] and PDIR[n] bits are set to 1.
0
AMUTEIN pin is inactive.
1
AMUTEIN pin is active. Audio mute in error is detected.
3
INEN
Drive AMUTE active when AMUTEIN error is active (INSTAT = 1).
0
Drive is disabled. AMUTEIN is ignored by AMUTE.
1
Drive is enabled (active). INSTAT = 1 drives AMUTE active.
2
INPOL
Audio mute in (AMUTEIN) polarity select bit.
0
Polarity is active high. A high on AMUTEIN sets INSTAT to 1.
1
Polarity is active low. A low on AM UTEIN sets INSTAT to 1.
1-0
MUTEN
0-3h
AMUTE pin enable bit (unless overridden by GPIO registers).
0
AMUTE pin is disabled, pin goes to tri-state condition.
1h
AMUTE pin is driven high if error is detected.
2h
AMUTE pin is driven low if error is detected.
3h
Reserved
3845
SPRUH73H – October 2011 – Revised April 2013
Multichannel Audio Serial Port (McASP)
Copyright © 2011–2013, Texas Instruments Incorporated