參數(shù)資料
型號(hào): WM9712LEFT
廠(chǎng)商: Wolfson Microelectronics
元件分類(lèi): 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(yè)數(shù): 61/78頁(yè)
文件大?。?/td> 689K
代理商: WM9712LEFT
Production Data
WM9712L
w
PD Rev 4.0 December 2003
61
COLD RESET (ASYNCHRONOUS, RESETS REGISTER SETTINGS)
RESETB
BITCLK
t
RST_LOW
t
RST2CLK
Figure 21 Cold Reset Timing
Note:
For correct operation SDATAOUT and SYNC must be held LOW for entire RESETB active
low period otherwise the device may enter test mode. See AC'97 specification or Wolfson
applications note WAN104 for more details.
PARAMETER
SYMBOL
t
RST_LOW
t
RST2CLK
MIN
1.0
162.8
TYP
MAX
UNIT
μ
s
ns
RESETB active low pulse width
RESETB inactive to BITCLK startup
delay
WARM RESET (ASYNCHRONOUS, PRESERVES REGISTER SETTINGS)
SYNC
BIT_CLK
t
SYNC_HIGH
t
SYNC2CLK
Figure 22 Warm Reset Timing
PARAMETER
SYMBOL
t
SYNC_HIGH
t
RST2CLK
MIN
162.4
TYP
1.3
MAX
UNIT
μ
s
ns
SYNC active high pulse width
SYNC inactive to BITCLK startup
delay
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