System Architecture
3-4
ADSP-21262 EZ-KIT Lite Evaluation System Manual
DAI Interface
The pins of the Digital Application Interface (DAI) connect to the signal
routing unit (SRU). The SRU is a flexible routing system, providing a
large system of signal flows within the DSP. In general, the SRU allows to
route the DAI pins to different internal peripherals in various
combinations.
Figure 3-2. Parallel Port Connections Block Diagram
DSP
AD15-0
Expansion
Interface
ALE
373
8-bit
Latch
LE
D
Q
373
8-bit Latch
(2)
LE
D
Q
512KB
SRAM
D7-0
A8-18
A0-7
CS
8 LEDs
Op ening the switch
puts latch always in
Transpa rent Mode
1MB
FLASH
D7-0
A8-19
A0-7
CS
FLASH_C S
SR AM _CS
W R
SR AM _CS
FLASH_C S
SRAM_CS
LED_CS
138
3->8
DEC
0
2
1
3
4
5
6
7
C
B
A
D0- 7
A23
A22
A21
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