ADSP-21266_07 AD [Analog Devices], ADSP-21266_07 Datasheet - Page 23
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ADSP-21266_07
Manufacturer Part Number
ADSP-21266_07
Description
Embedded Processor
Manufacturer
AD [Analog Devices]
Datasheet
1.ADSP-21266_07.pdf
(44 pages)
- Current page: 23 of 44
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Precision Clock Generator (Direct Pin Routing)
The timing in
SRU is configured such that the precision clock generator
(PCG) takes its inputs directly from the DAI pins (via pin buff-
ers) and sends its outputs directly to the DAI pins. For the other
Table 20. Precision Clock Generator (Direct Pin Routing)
Parameter
Timing Requirements
t
t
t
Switching Characteristics
t
t
t
PCGIW
STRIG
HTRIG
DPCGIO
DTRIG
PCGOW
Table 20
Input Clock Pulse Width
PCG Trigger Setup Before Falling Edge of PCG Input Clock
PCG Trigger Hold After Falling Edge of PCG Input Clock
PCG Output Clock and Frame Sync Active Edge Delay After PCG Input
Clock Falling Edge
PCG Output Clock and Frame Sync Delay After PCG Trigger
Output Clock Pulse Width
PCG_CLKx_O
PCG_TRIGx_I
and
PCG_EXTx_I
PCG_FSx_O
Figure 16
DAI_Pm
(CLKIN)
DAI_Pn
DAI_Py
DAI_Pz
is valid only when the
Figure 16. Precision Clock Generator (Direct Pin Routing)
t
STRIG
Rev. C | Page 23 of 44 | October 2007
t
HTRIG
t
DTRIG
t
DPCGIO
cases where the PCG’s inputs and outputs are not directly
routed to/from DAI pins (via pin buffers), there is no timing
data available. All timing parameters and switching characteris-
tics apply to external DAI pins (DAI_P07 – DAI_P20).
t
PCGIW
Min
20
2
2
2.5
2.5 + 2.5 × t
40
t
PCGOW
PCGOW
Max
10
10 + 2.5 × t
ADSP-21266
PCGOW
Unit
ns
ns
ns
ns
ns
ns
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