參數(shù)資料
型號(hào): WM9712L
廠商: Wolfson Microelectronics
元件分類: Codec
英文描述: AC97 Audio and Touchpanel CODEC
中文描述: AC97音頻編解碼器和觸摸屏
文件頁數(shù): 59/78頁
文件大小: 689K
代理商: WM9712L
Production Data
WM9712L
w
PD Rev 4.0 December 2003
59
INTERFACE TIMING
Test Characteristics:
DBVDD = 3.3V, DCVDD = 3.3V, DGND1 = DGND2 = 0V, T
A
= -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 17 Clock Specifications (50pF External Load)
PARAMETER
SYMBOL
t
CLK_PERIOD
t
CLK_HIGH
t
CLK_LOW
t
SYNC_PERIOD
t
SYNC_HIGH
t
SYNC_LOW
MIN
36
36
TYP
12.288
81.4
40.7
40.7
48
20.8
1.3
19.5
MAX
750
45
45
UNIT
MHz
ns
ps
ns
ns
kHz
μ
s
μ
s
μ
s
BITCLK frequency
BITCLK period
BITCLK output jitter
BITCLK high pulse width (Note 1)
BITCLK low pulse width (Note 1)
SYNC frequency
SYNC period
SYNC high pulse width
SYNC low pulse width
Note:
1. Worst case duty cycle restricted to 45/55
DATA SETUP AND HOLD
Figure 18 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
WM9712L.
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