Figure 19. C620X/C670X Emif Ce Space Control Register Diagram; Figure 20. C621X/C671X/C64X Emif Ce Space Control Register Diagram; Table 7. C6000 Emif Ce Space Control Register Bit Field Description For Sdram; Ce Space Control Registers - Texas Instruments TMS320C6000 Application Report

SPRA433E
2.5.2

CE Space Control Registers

Figure 19 and Figure 20 show the four CE space control registers, which correspond to the four
CE spaces supported by the EMIF. The MTYPE field identifies the memory type for the
corresponding CE space. If MTYPE selects SDRAM or SBSRAM, the remaining fields in the
register do not apply. If an asynchronous type is selected (ROM or asynchronous), the
remaining fields specify the shaping of the address and control signals for access to that space.
The only field of interest for SDRAM is the MTYPE field. Modification of a CE space control
register should not be done until that CE space is inactive.
Table 7 lists the bit field descriptions for Figure 19 and Figure 20.
31 28
WRITE SETUP
R/W−1111
15 14 13
Reserved
R−11
Legend: R = Read, R/W= Read/Write

Figure 19. C620x/C670x EMIF CE Space Control Register Diagram

31 28
WRITE SETUP
R/W−1111
15 14 13
TA
R/W−11
Legend: R = Read, R/W= Read/Write

Figure 20. C621x/C671x/C64x EMIF CE Space Control Register Diagram

Table 7. C6000 EMIF CE Space Control Register Bit Field Description for SDRAM

Field Description
MTYPE Memory Type of the corresponding CE Spaces
MTYPE for C620x/C670x
MTYPE = 011b: 32-bit-wide SDRAM
MTYPE for C621x/C671x/C64x
MTYPE = 0011b: 32-bit-wide SDRAM
MTYPE = 1000b: 8-bit-wide SDRAM
MTYPE = 1001b: 16-bit-wide SDRAM
MTYPE = 1101b: 64-bit-wide SDRAM
† 32-bit and 64-bit interfaces do not apply to C6712, C6712C, C6712D, as well as the PYP package type of C6713 and C6713B, and C64x
EMIFB.
‡ 64-bit interface applies to C64x EMIFA only.
30 TMS320C6000 EMIF-to-External SDRAM Interface
27
WRITE STROBE
R/W−111111
8
READ STROBE
R/W−111111
27
WRITE STROBE
R/W−111111
8
READ STROBE
R/W−111111
†
22 21 20
WRITE HOLD
R/W−11
7 6 4
Rsv MTYPE
R−0 R/W−010
22 21 20
WRITE HOLD
R/W−11
7 4
MTYPE Write Hold MSB
R/W−010
‡
19
READ SETUP
R/W−1111
3 2 1
Reserved READ HOLD
R−0 R/W−11
19
READ SETUP
R/W−1111
3 2 1
READ HOLD
R/W−0 R/W−011
16
0
16
0