McASP Registers
Table 22-14. Pin Function Register (PFUNC) Field Descriptions
Bit
Field
Value
Description
31
AFSR
Determines if AFSR pin functions as McASP or GPIO.
0
Pin functions as McASP pin.
1
Pin functions as GPIO pin.
30
AHCLKR
Determines if AHCLKR pin functions as McASP or GPIO.
0
Pin functions as McASP pin.
1
Pin functions as GPIO pin.
29
ACLKR
Determines if ACLKR pin functions as McASP or GPIO.
0
Pin functions as McASP pin.
1
Pin functions as GPIO pin.
28
AFSX
Determines if AFSX pin functions as McASP or GPIO.
0
Pin functions as McASP pin.
1
Pin functions as GPIO pin.
27
AHCLKX
Determines if AHCLKX pin functions as McASP or GPIO.
0
Pin functions as McASP pin.
1
Pin functions as GPIO pin.
26
ACLKX
Determines if ACLKX pin functions as McASP or GPIO.
0
Pin functions as McASP pin.
1
Pin functions as GPIO pin.
25
AMUTE
Determines if AMUTE pin functions as McASP or GPIO.
0
Pin functions as McASP pin.
1
Pin functions as GPIO pin.
24-6
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.
5-0
AXR[5-0]
Determines if AXRn pin functions as McASP or GPIO.
0
Pin functions as McASP pin.
1
Pin functions as GPIO pin.
3831
SPRUH73H – October 2011 – Revised April 2013
Multichannel Audio Serial Port (McASP)
Copyright © 2011–2013, Texas Instruments Incorporated