Analog Devices SHARC ADSP-214 Series Hardware Reference Manual page 805

Kernel Boot Time
This section illustrates the minimum required booting time for the kernels
(provided by the tools). There are five timing windows which describe
together the entire boot process shown in the list below and
1. to
RESET
2.
RESETOUT
3. Load Kernel DMA (256 words)
4. Load application (user dependent)
5. Load IVT (256 words)
Table 23-13. Boot Times
Boot Mode
RESET
RESETOUT
SPI Master 4096 CLKIN
SPI Slave 4096 CLKIN
External Port 4096 CLKIN
Link Port0 4096 CLKIN
The complete time for booting can be estimated by adding all 5 timing
windows. Loading Kernel and Loading IVT both have the same size, how-
ever the default access time (wait states) for the IVT loading can be
changed in the kernel by the user.
ADSP-214xx SHARC Processor Hardware Reference
www.BDTIC.com/ADI
(core is in reset)
RESETOUT
to chip select boot source (activate the boot DMA)
to to Boot
RESETOUT
Chip Select
1 PCLK
Host drives signal (I/O × PCLK
5 PCLK
Host drives signal LCLK0 × 1536
System Design
Kernal DMA (256
Words)
÷
(I/O × PCLK 100 +
4 × PCLK) × N
÷
100 +
2 × PCLK) × N
24 × SDCLK × 1536
Table 23-13.
Comment
N=384, 768 or 1536 for
I/O = 32, 16 or 8
N=384, 768 or 1536 for
I/O = 32, 16 or 8
23-23