Control Register (Ctrl) - Texas Instruments OMAP5910 Technical Reference Manual

MPU Interface
Table 2–49. Control Register (CTRL_REG) – Offset: x00
Bit Value Function
22–21 Control word swap on the MPUI/DSP interface for a
32-bit access
00 Word swap for all the accesses (OMAP1509 behavior)
01 Word swap only for non-APIMEM accesses
10 Word swap only for APIMEM accesses
11 Turn off word swap for all accesses
20–18 MPUIF access priority between MPU, reserved port, and
DMA requests. The reserved port is not used in the
OMAP5910 device and can be disregarde.
Note: the lower the number, the higher the priority.
000 MPU-1, DMA-2, reserved port–3
001 MPU-1, DMA-3, reserved port–2
010 MPU-2, DMA-1, reserved port–3
011 MPU-2, DMA-3, reserved port–1
1X0 MPU-3, DMA-1, reserved port–2
1X1 MPU-3, DMA-2, reserved port–1
17–16 Control byte swap on the MPUI/DSP interface
00 Turn off byte swap for all accesses
01 Byte swap only for non-APIMEM accesses
10 Byte swap for all accesses
11 Byte swap only for APIMEM accesses
15–8 MPUI bus access time out
7–4 Division factor of APIF_HNSTROBE. For the OMAP5910
device, this field must be set to 2 (10b) or greater.
Settings of 00b or 01b should not be used.
2-58
Value at
Hardware
Size Access Reset
2 R/W 00
3 R/W 000
2 R/W 11
8 R/W 0xFF
4 R/W 0x1