ADSP-21362/ADSP-21363/ADSP-21364/ADSP-21365/ADSP-21366
Precision Clock Generator (Direct Pin Routing)
This timing is only valid when the SRU is configured such that
the precision clock generator (PCG) takes its inputs directly
from the DAI pins (via pin buffers) and sends its outputs
inputs and outputs are not directly routed to/from DAI pins (via
pin buffers) there is no timing data available. All timing param-
eters and switching characteristics apply to external DAI pins
(DAI_P01 through DAI_P20).
directly to the DAI pins. For the other cases, where the PCG’s
Table 18. Precision Clock Generator (Direct Pin Routing)
K and B Grade Y Grade
Parameter                             Min                     Max                    Max                   Unit
Timing Requirement s
t PCGIP
Input Clock Period t PCLK × 4
ns
t STRIG
PCG Trigger Setup Before Falling
4.5
ns
Edge of PCG Input Clock
t HTRIG
PCG Trigger Hold After Falling
3
ns
Edge of PCG Input Clock
Switching Characteristics
t DPCGIO
PCG Output Clock and Frame Sync
Active Edge Delay After PCG Input 2.5 10 10 ns
Clock
t DTRIGCLK PCG Output Clock Delay After PCG 2.5 + (2.5 × t PCGIP ) 10 + (2.5 × t PCGIP ) 12 + (2.5 × t PCGIP ) ns
Trigger
t DTRIGFS
PCG Frame Sync Delay After PCG
Trigger
2.5 + ((2.5 + D – PH) × t PCGIP ) 10 + ((2.5 + D – PH) × t PCGIP ) 12 + ((2.5 + D – PH) × t PCGIP ) ns
t PCGOP 1
Output Clock Period 2 × t PCGIP – 1 ns
D = FSxDIV, PH = FSxPHASE. For more information, refer to the ADSP-2136x SHARC Processor Hardware Reference , “Precision Clock Gener-
ators” chapter.
1
In normal mode, t PCGOP (min) = 2 × t PCGIP .
t STRIG
t HTRIG
DAI_Pn
PCG_TRIGx_I
t PCGIP
DAI_Pm
PCG_EXTx_I
(CLKIN)
t DPCGIO
DAI_Py
PCG_CLKx_O
t DTRIGCLK
t DPCGIO
t PCGOP
DAI_Pz
PCG_FSx_O
t DTRIGFS
Figure 15. Precision Clock Generator (Direct Pin Routing)
Rev. J |
Page 23 of 60 |
July 2013
相关PDF资料
ADZS-21371-EZLITE KIT EVAL EZLITE ADZS-21371
ADZS-21469-EZLITE KIT EVAL EZ LITE ADSP-21469
ADZS-21479-EZLITE KIT EVAL EZ BOARD ADSP-2147X
ADZS-21489-EZLITE KIT EVAL EZ BOARD ADSP-2148X
ADZS-218X-ICE-2.5V EMULATOR SRL FOR ADDS-218X-ICE
ADZS-BF506F-EZLITE KIT EVAL EZLITE ADSP-BF506F
ADZS-BF518F-EZLITE KIT EZ LITE BF512F/14F/16F/18F
ADZS-BF527-EZLITE BOARD EVAL ADSP-BF527
相关代理商/技术参数
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ADZS-21369-EZLITE 制造商:Analog Devices 功能描述:ADZS-21369-EZLITE
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