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參數資料
| 型號： | WAN-0143 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | ADA and MASK Timing on WM9712 |
| 中文描述： | ADA和面具的WM9712時間 |
| 文件頁數： | 3/6頁 |
| 文件大小： | 60K |
| 代理商： | WAN-0143 |
WAN_0143
w
Rev 1.0 March 2004
3
INTERFACE TIMING
MASK
Frames
(SYNC)
AUXADC Conversion
(MASK = 11)
AUXADC Conversion
(MASK = 10)
AUXADC Conversion
(MASK = 01)
Conv
Delay
Conv
Conv
Conv
Conv
Conv
t
DEL
t
DEL
t
DEL
t
DEL
Delay
Delay
Conv
Delay
Conv
Delay
Conv
Delay
Conv
Delay
Figure 1 MASK Delay Timings (t
DEL
= 2 frames)
PARAMETER
SYMBOL
t
DEL
MIN
0
TYP
MAX
288
UNIT
frames
Frame Delay set by register 76h
MASK
BCLK
SYNC
t
SETUP
t
SETUP
t
HOLD
t
HOLD
Figure 2 MASK Delay Timings
PARAMETER
SYMBOL
t
SETUP
t
HOLD
MIN
162.8
81.4
TYP
MAX
UNIT
ns
ns
Setup time from MASK edge to SYNC
1
Hold time of MASK level from SYNC
rising edge.
Note:
1.
There must be at least two BCLK's between the rising edge of MASK and the rising edge of SYNC. Therefore, once MASK is
high there must be at least two BCLK rising edges prior to the SYNC pulse.
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