GPMC
7.1.5.9
GPMC_CONFIG
The configuration register allows global configuration of the GPMC.
Figure 7-59. GPMC_CONFIG
31
16
Reserved
R-0
15
10
9
8
Reserved
WAIT1PIN
WAIT0PIN
POLARITY
POLARITY
R-0
R/W-0
R/W-0
7
5
4
3
2
1
0
Reserved
WRITE
Reserved
LIMITED
NANDFORCE
PROTECT
ADDRESS
POSTEDWRITE
R-0
R/W-0
R-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 7-63. GPMC_CONFIG Field Descriptions
Bit
Field
Value
Description
31-10
Reserved
0
Reserved
9
WAIT1PINPOLARITY
Selects the polarity of input pin WAIT1
0
WAIT1 active low
1
WAIT1 active high
8
WAIT0PINPOLARITY
Selects the polarity of input pin WAIT0
0
WAIT0 active low
1
WAIT0 active high
7-5
Reserved
0
Reserved
4
WRITEPROTECT
Controls the WP output pin level
0
WP output pin is low
1
WP output pin is high
3-2
Reserved
0
Reserved
1
LIMITEDADDRESS
Limited Address device support
0
No effect. GPMC controls all addresses.
1
A26-A11 are not modified during an external memory access.
0
NANDFORCEPOSTEDWRITE
Enables the Force Posted Write feature to NAND Cmd/Add/Data location
0
Disables Force Posted Write
1
Enables Force Posted Write
373
SPRUH73H – October 2011 – Revised April 2013
Memory Subsystem
Copyright © 2011–2013, Texas Instruments Incorporated