Analog Devices SHARC ADSP-21368 - Page 655

ADSP-21368 SHARC Processor Hardware Reference A-7
Register Reference
7 RBPR Rotating Priority Bus Arbitration. This bit enables or disables prior-
ity rotation among DMA channels. Permits core writes.
0 = Arbiter uses fixed priority
1 = Arbiter uses rotating priority
8Reserved
9IMDW0Internal Memory Data Width 0. Selects the data access size for inter-
nal memory block0 as 48- or 32-bit data. Permits core writes.
0 = Data bus width is 32 bits
1 = Data bus width is 48 bits
10 IMDW1 Internal Memory Data Width 1. Selects the data access size for inter-
nal memory block1 as 48- or 32-bit data. Permits core writes.
0 = Data bus width is 32 bits
1 = Data bus width is 48 bits
11 IMDW2 Internal Memory Data Width 2. Selects the data access size for inter-
nal memory block2 as 48- or 32-bit data. Permits core writes.
0 = Data bus width is 32 bits
1 = Data bus width is 48 bits
12 IMDW3 Internal Memory Data Width 3. Selects the data access size for inter-
nal memory block3 as 48- or 32-bit data. Permits core writes.
0 = Data bus width is 32 bits
1 = Data bus width is 48 bits
15-13 Reserved
16 IRQ0EN Flag0 Interrupt Mode.
0 = Flag0 pin is a general-purpose I/O pin. Permits core writes.
1 = Flag0 pin is allocated to interrupt request IRQ0
.
17 IRQ1EN Flag1 Interrupt Mode.
0 = Flag1 pin is a general-purpose I/O pin. Permits core writes.
1 = Flag1 pin is allocated to interrupt request IRQ1
.
18 IRQ2EN Flag2 Interrupt Mode.
0 = Flag2 pin is a genera-purpose I/O pin. Permits core writes.
1 = Flag2 pin is allocated to interrupt request IRQ2
.
Table A-1. SYSCTL Register Bit Descriptions (Cont’d)
Bit Name Description