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Register Bit Definitions
Table 4-15. GPIO Port B MUX 2 (GPBMUX2) Register Field Descriptions (continued)
Bit Field Value Description
3:2 GPIO49 Configure this pin as:
00 GPIO 49 - general purpose I/O 49 (default)
01 ECAP6 - Enhanced Capture input/output 6 (I/O)
10 or XD30 - External interface data line 30 (I/O)
11
1:0 GPIO48 Configure this pin as:
00 GPIO 48 - general purpose I/O 48 (default)
01 ECAP5 - Enhanced Capture input/output 5 (I/O)
10 or XD31 - External interface data line 31 (I/O)
11
Figure 4-12. GPIO Port C MUX 1 (GPCMUX1) Register
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
GPIO79 GPIO78 GPIO77 GPIO76 GPIO75 GPIO74 GPIO73 GPIO72
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
GPIO71 GPIO70 GPIO69 GPIO68 GPIO67 GPIO66 GPIO65 GPIO64
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; - n = value after reset
Table 4-16. GPIO Port C MUX 1 (GPCMUX1) Register Field Descriptions
Bit Field Value Description
31:30 GPIO79 Configure this pin as:
00 or 01 GPIO 79 - general purpose I/O 79 (default)
10 or 11 XD0 - External interface data line 0 (O)
29:28 GPIO78 Configure this pin as:
00 or 01 GPIO 78 - general purpose I/O 78 (default)
10 or 11 XD1 - External interface data line 1 (O)
27:26 GPIO77 Configure this pin as:
00 or 01 GPIO 77 - general purpose I/O 77 (default)
10 or 11 XD2 - External interface data line 2 (O)
25:24 GPIO76 Configure this pin as:
00 or 01 GPIO 76 - general purpose I/O 76 (default)
10 or 11 XD3 - External interface data line 3 (O)
23:22 GPIO75 Configure this pin as:
00 or 01 GPIO 75 - general purpose I/O 75 (default)
10 or 11 XD4 - External interface data line 4 (O)
21:20 GPIO74 Configure this pin as:
00 or 01 GPIO 74 - general purpose I/O 74 (default)
10 or 11 XD5 - External interface data line 5(O)
19:18 GPIO73 Configure this pin as:
00 or 01 GPIO 73 - general purpose I/O 73 (default)
10 or 11 XD6 - External interface data line 6 (O)
17:16 GPIO72 Configure this pin as:
00 or 01 GPIO 72 - general purpose I/O 72 (default)
10 or 11 XD7 - External interface data line 7 (O)
SPRUFB0C – September 2007 – Revised May 2009 General-Purpose Input/Output (GPIO) 91
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