
www.ti.com
3.5 Configurations After Reset
3.5.1
Switched Central Resource (SCR) Bus Priorities
TMS320DM6443
Digital Media System-on-Chip
SPRS282E–DECEMBER 2005–REVISED MARCH 2007
Table 3-11. GPIO and EMIFA Multiplexing (Part 3)
Pin Mux Register AEAW[4:0] Bit Settings
10000
10001
EM_BA[1]
EM_BA[1]
EM_A[0]
EM_A[0]
EM_A[1]
EM_A[1]
EM_A[2]
EM_A[2]
EM_A[3]
EM_A[3]
EM_A[4]
EM_A[4]
EM_A[5]
EM_A[5]
EM_A[6]
EM_A[6]
EM_A[7]
EM_A[7]
EM_A[8]
EM_A[8]
EM_A[9]
EM_A[9]
EM_A[10]
EM_A[10]
EM_A[11]
EM_A[11]
EM_A[12]
EM_A[12]
EM_A[13]
EM_A[13]
EM_A[14]
EM_A[14]
GPIO[16]
EM_A[15]
GPIO[15]
GPIO[15]
GPIO[14]
GPIO[14]
GPIO[13]
GPIO[13]
GPIO[12]
GPIO[12]
GPIO[11]
GPIO[11]
GPIO[10]
GPIO[10]
10010
EM_BA[1]
EM_A[0]
EM_A[1]
EM_A[2]
EM_A[3]
EM_A[4]
EM_A[5]
EM_A[6]
EM_A[7]
EM_A[8]
EM_A[9]
EM_A[10]
EM_A[11]
EM_A[12]
EM_A[13]
EM_A[14]
EM_A[15]
EM_A[16]
GPIO[14]
GPIO[13]
GPIO[12]
GPIO[11]
GPIO[10]
10011
EM_BA[1]
EM_A[0]
EM_A[1]
EM_A[2]
EM_A[3]
EM_A[4]
EM_A[5]
EM_A[6]
EM_A[7]
EM_A[8]
EM_A[9]
EM_A[10]
EM_A[11]
EM_A[12]
EM_A[13]
EM_A[14]
EM_A[15]
EM_A[16]
EM_A[17]
GPIO[13]
GPIO[12]
GPIO[11]
GPIO[10]
10100
EM_BA[1]
EM_A[0]
EM_A[1]
EM_A[2]
EM_A[3]
EM_A[4]
EM_A[5]
EM_A[6]
EM_A[7]
EM_A[8]
EM_A[9]
EM_A[10]
EM_A[11]
EM_A[12]
EM_A[13]
EM_A[14]
EM_A[15]
EM_A[16]
EM_A[17]
EM_A[18]
GPIO[12]
GPIO[11]
GPIO[10]
10101
EM_BA[1]
EM_A[0]
EM_A[1]
EM_A[2]
EM_A[3]
EM_A[4]
EM_A[5]
EM_A[6]
EM_A[7]
EM_A[8]
EM_A[9]
EM_A[10]
EM_A[11]
EM_A[12]
EM_A[13]
EM_A[14]
EM_A[15]
EM_A[16]
EM_A[17]
EM_A[18]
EM_A[19]
GPIO[11]
GPIO[10]
10110
EM_BA[1]
EM_A[0]
EM_A[1]
EM_A[2]
EM_A[3]
EM_A[4]
EM_A[5]
EM_A[6]
EM_A[7]
EM_A[8]
EM_A[9]
EM_A[10]
EM_A[11]
EM_A[12]
EM_A[13]
EM_A[14]
EM_A[15]
EM_A[16]
EM_A[17]
EM_A[18]
EM_A[19]
EM_A[20]
GPIO[10]
Others
EM_BA[1]
EM_A[0]
EM_A[1]
EM_A[2]
EM_A[3]
EM_A[4]
EM_A[5]
EM_A[6]
EM_A[7]
EM_A[8]
EM_A[9]
EM_A[10]
EM_A[11]
EM_A[12]
EM_A[13]
EM_A[14]
EM_A[15]
EM_A[16]
EM_A[17]
EM_A[18]
EM_A[19]
EM_A[20]
EM_A[21]
The following sections give the details on configuring the device after reset.
Prioritization within the switched central resource (SCR) is programmable for each master. The register bit
fields and default priority levels for DM6443 bus masters are shown in
Table 3-12
. The priority levels
should be tuned to obtain the best system performance for a particular application. Lower values indicate
higher priority. For most masters, their priority values are programmed at the system level by configuring
the MSTPRI0 and MSTPRI1 registers. Details on the MSTPRI0/1 registers are shown in
Figure 3-5
and
Figure 3-6
. The C64x+, VPSS, and EDMA masters contain registers that control their own priority values.
Table 3-12. DM6443 Default Bus Master Priorities
BUS
MASTER
VPSS
EDMATC0
EDMATC1
ARM (DMA) 1 (MSTPRI0 Register)
ARM (CFG)
1 (MSTPRI0 Register)
C64X+
7 (C64x+ MDMAARBE.PRI Register bit field)
(DMA)
PRIORITY BIT FIELD
VPSSP
EDMATC0P
EDMATC1P
ARM_DMAP
ARM_CFGP
C64X+_DMAP
DEFAULT PRIORITY LEVEL
0 (VPSS PCR Register)
0 (EDMACC QUEPRI Register)
0 (EDMACC QUEPRI Register)
Submit Documentation Feedback
Device Configurations
67