參數(shù)資料
型號: PCM1717E
英文描述: Stereo Audio DIGITAL-TO-ANALOG CONVERTER
中文描述: 立體聲音頻數(shù)字模擬轉(zhuǎn)換器
文件頁數(shù): 7/14頁
文件大?。?/td> 126K
代理商: PCM1717E
7
PCM1717
Reset
PCM1717 has both internal power on reset circuit and the
RSTB-pin (pin 15) which accepts external forced reset by
RSTB = LOW. For internal power on reset, initialize (reset)
is done automatically at power on V
DD
>2.2V (typ). During
internal reset = LOW, the output of the DAC is invalid and
the analog outputs are forced to V
CC
/2. Figure 3 illustrates
the timing of internal power on reset.
For the RSTB-pin, PSTB-pin accepts external forced reset by
RSTB = L. During RSTB = L, the output of the DAC is
invalid and the analog outputs are forced to V
CC
/2 after
internal initialize (1024 system clocks count after RSTB = H.)
Figure 4 illustrates the timing of RSTB-pin reset.
1024 system (= XTI) clocks
Reset
Reset Removal
2.6V
2.2V
1.8V
V
CC
/V
DD
Internal Reset
XTI Clock
FIGURE 3. Internal Power-On Reset Timing.
1024 system (XTI) clocks
Reset
Reset Removal
XTI Clock
Internal Reset
RSTB-pin
50% of V
DD
t
RST(1)
NOTE: (1) t
RST
= 20ns min
FIGURE 4. RSTB-Pin Reset Timing.
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