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WM9711 Datasheet(PDF) 47 Page - Wolfson Microelectronics plc

Part # WM9711
Description  LOW POWER AUDIO CODEC FOR PORTABLE APPLICATIONS
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9711 Datasheet(HTML) 47 Page - Wolfson Microelectronics plc

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Production Data
WM9711L
w
PD Rev 4.1 April 2004
47
INTERFACE TIMING
Test Characteristics:
DBVDD = 3.3V, DCVDD = 3.3V, DGND1 = DGND2 = 0V, TA = -25
°C to +85°C, unless otherwise stated.
CLOCK SPECIFICATIONS
BITCLK
SYNC
t
CLK_HIGH
t
CLK_LOW
t
CLK_PERIOD
t
SYNC_HIGH
t
SYNC_LOW
t
SYNC_PERIOD
Figure 9 Clock Specifications (50pF External Load)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
BITCLK frequency
12.288
MHz
BITCLK period
tCLK_PERIOD
81.4
ns
BITCLK output jitter
750
ps
BITCLK high pulse width (Note 1)
tCLK_HIGH
36
40.7
45
ns
BITCLK low pulse width (Note 1)
tCLK_LOW
36
40.7
45
ns
SYNC frequency
48
kHz
SYNC period
tSYNC_PERIOD
20.8
µs
SYNC high pulse width
tSYNC_HIGH
1.3
µs
SYNC low pulse width
tSYNC_LOW
19.5
µs
Note:
1. Worst case duty cycle restricted to 45/55
DATA SETUP AND HOLD
Figure 10 Data Setup and Hold (50pF External Load)
Note:
1.
Setup and hold times for SDATAIN are with respect to the AC’97 controller, not the
WM9711L.


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