32
SWRS224A – FEBRUARY 2019 – REVISED AUGUST 2019
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Terminal Configuration and Functions
Copyright © 2019, Texas Instruments Incorporated
Table 4-3. Signal Descriptions (continued)
FUNCTION
SIGNAL NAME
PIN
NO.
PIN
TYPE
SIGNAL
DIRECTION
DESCRIPTION
GPIO
GPIO10
3
I/O
I/O
General-purpose inputs or outputs
GPIO11
4
I/O
I/O
GPIO14
5
I/O
I/O
GPIO15
6
I/O
I/O
GPIO16
7
I/O
I/O
GPIO17
8
I/O
I/O
GPIO12
9
I/O
I/O
GPIO13
10
I/O
I/O
GPIO22
11
I/O
I/O
GPIO23
12
I/O
I/O
GPIO24
18
I/O
I/O
GPIO28
19
I/O
I/O
GPIO29
22
I/O
I/O
GPIO25
23
O
O
GPIO0
44
I/O
I/O
GPIO30
42
I/O
I/O
GPIO1
46
I/O
I/O
GPIO2
47
I/O
I/O
GPIO3
48
I/O
I/O
GPIO4
49
I/O
I/O
GPIO5
50
I/O
I/O
GPIO6
51
I/O
I/O
GPIO7
52
I/O
I/O
GPIO8
53
I/O
I/O
GPIO9
54
I/O
I/O
McASP
I
2
S or PCM
MCAFSX
4
I/O
O
I
2
S audio port frame sync
11
18
23
42
53
McACLK
9
I/O
O
I
2
S audio port clock outputs
42
I/O
O
McAXR1
44
I/O
I/O
I
2
S audio port data 1 (RX/TX)
50
I
I/O
I
2
S audio port data 1 (RX and TX)
McAXR0
44
I/O
I/O
I
2
S audio port data 0 (RX and TX)
54
I/O
I/O
I
2
S audio port data (RX and TX)
McACLKX
52
I/O
O
I
2
S audio port clock
Multimedia card
(MMC or SD)
SDCARD_CLK
3
I/O
O
SD card clock data
7
SDCARD_CMD
4
I/O
I/O (open drain)
SD card command line
8
I/O
I/O
SDCARD_DATA0
6
I/O
I/O
SD card data
54
SDCARD_IRQ
53
I/O
I
Interrupt from SD card