DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 21

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Note:
1.8 DMA
The DMA block has the following features:
Freescale Semiconductor
EXTAL
PINIT/NMI
XTAL
Six DMA channels supporting internal and external accesses
One-, two-, and three-dimensional transfers (including circular buffering)
End-of-block-transfer interrupts
Triggering from interrupt lines and all peripherals
RESET
See Section 1.6.6, Internal Memory, on page 1-9 for memory size details.
2
Bootstrap
Internal
Switch
Generator
Triple
Timer
Six-Channel
ROM
Generation
Data
DMA Unit
Bus
Address
Clock
PLL
Unit
16
Interface
HI08
Host
Controller
Program
Interrupt
Figure 1-1. DSP56303 Block Diagram
6
Interface
Expansion Area
ESSI
6
MODA/IRQA
MODB/IRQB
MODC/IRQC
MODD/IRQD
Peripheral
DSP56303 User’s Manual, Rev. 2
Controller
Program
Decode
Interface
3
SCI
Generator
Program
Address
Program RAM
4096 × 24 bits
(default)
DSP56300
24-Bit
Core
DDB
YDB
XDB
PDB
GDB
24
DAB
YAB
XAB
PAB
Two 56-bit Accumulators
×
56-bit Barrel Shifter
24 + 56
2048 × 24
(default)
X Data
RAM
bits
Data ALU
→
56-bit MAC
2048
(default)
Y Data
RAM
bits
×
24
Expansion
Interface
Data Bus
I-Cache
Management
External
Address
External
Control
External
Switch
Switch
Memory
Bus
Bus
and
Power
Area
OnCE
JTAG
Address
Control
DE
Data
18
13
24
5
DMA
1-11