Texas Instruments TM4C1294NCPDT User Manual

Table 11-7. Capabilities of Host Bus 8 and Host Bus 16 Modes (continued)
Addressable
Memory
Available
Address
Byte AccessBSELMax # of
External
Devices
CSCFGCSCFGEXTMODEHost Bus
Type
-noneAlwaysN/A40x210x3HB8
512 MB28 bits
a
No010x0, 0x100x0HB16
128 MB26 bits
b
Yes110x0, 0x100x0HB16
256 MB27 bits
a
No020x200x0HB16
64 MB25 bits
b
Yes120x200x0HB16
128 MB26 bits
a
No020x300x0HB16
32 MB24 bits
b
Yes120x300x0HB16
256 MB27 bits
a
No010x010x0HB16
128 MB25 bits
b
Yes110x010x0HB16
256 MB27 bits
a
No040x110x0HB16
64 MB25 bits
b
Yes140x110x0HB16
128 MB26 bits
a
No040x210x0HB16
32 MB24 bits
b
Yes140x210x0HB16
8 kB12 bits
a
No010x0, 0x100x1HB16
2 kB10 bits
b
Yes110x0, 0x100x1HB16
4 kB11 bits
a
No020x200x1HB16
1 kB9 bits
b
Yes120x200x1HB16
2 kB10 bits
a
No020x300x1HB16
512 B8 bits
b
Yes120x300x1HB16
4 kB11 bits
a
No010x010x1HB16
1 kB9 bits
b
Yes110x010x1HB16
4 kB11 bits
a
No040x110x1HB16
1 kB9 bits
b
Yes140x110x1HB16
2 kB10 bits
a
No040x210x1HB16
512 B8 bits
b
Yes140x210x1HB16
-noneNo010x100x3HB16
-noneYes110x100x3HB16
-noneNo020x300x3HB16
-noneYes120x300x3HB16
-noneNo010x010x3HB16
-noneYes110x010x3HB16
-noneNo040x110x3HB16
-noneYes140x110x3HB16
-noneNo040x210x3HB16
-noneYes140x210x3HB16
a. If byte selects are not used, data accesses are on 2-byte boundaries. As a result, the available address space is doubled.
b. Two EPI signals are used for byte selects, reducing the available address space by two bits.
Table 11-8 on page 831 shows how the EPI[31:0] signals function while in Host-Bus 8 mode.
Notice that the signal configuration changes based on the address/data mode selected by the MODE
June 18, 2014830
Texas Instruments-Production Data
External Peripheral Interface (EPI)

Texas Instruments TM4C1294NCPDT Specifications

General

Brand	Texas Instruments
Model	TM4C1294NCPDT
Category	Microcontrollers
Language	English