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參數資料
型號: TPS65920A2ZCHR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA139
封裝: 10 X 10 MM, 0.65 MM PITCH, GREEN, PLASTIC, NFBGA-139
文件頁數: 100/115頁
文件大小: 1232K
代理商: TPS65920A2ZCHR
VIO
PERIPH1
Device
VIO
PERIPH2
VIO
PERIPHn
CLKREQ
037-043
SWCS037G
– MAY 2008 – REVISED APRIL 2011
CLKREQ pin. As a result, the TPS65920/TPS65930 device immediately sets CLKEN to 1 to warn the
clock provider in the system about the clock request and starts a timer (maximum of 5.2 ms using the
32.768-kHz clock). When the timer expires, the TPS65920/TPS65930 device opens a gated clock, the
timer automatically reloads the defined value, and a high-frequency output clock signal is available
through the HFCLKOUT pin. The output drive of HFCLKOUT is programmable (minimum load 10 pF,
maximum load 40 pF) and must be at 40 pF by default.
With a register setting, the mirroring of CLKEN can be enabled on CLKEN2. When this mirroring feature is
not enabled, CLKEN2 can be used as a general-purpose output controlled through I2C accesses.
CLKREQ, when enabled, has a weak pulldown resistor to support the wired-OR clock request.
Figure 11-3 shows an example of the wired-OR clock request.
Figure 11-3. Example of Wired-OR Clock Request
The timer default value must be the worst case (10 ms) for the clock providers. For legacy or workaround
support, the NSLEEP1 and NSLEEP2 signals can also be used as a clock request even if it is not their
primary goal. By default, this feature is disabled and must be enabled individually by setting the register
bits associated with each signal.
Copyright
2008–2011, Texas Instruments Incorporated
Clock Specifications
85
focus.ti.com: TPS65930/TPS65920
相關PDF資料
PDF描述
TPS65920A2ZCH SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65920BZCHR SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65920BZCH SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65930A2ZCHR SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65930A2ZCH SPECIALTY CONSUMER CIRCUIT, PBGA139
相關代理商/技術參數
參數描述
TPS65920BZCH 功能描述:開關變換器、穩壓器與控制器 Int Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TPS65920BZCH 制造商:Texas Instruments 功能描述:Power Supply IC
TPS65920BZCHR 功能描述:開關變換器、穩壓器與控制器 Int Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TPS65921B1ZQZ 功能描述:PMIC 解決方案 Integrated Power Mgmt IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
TPS65921B1ZQZR 功能描述:PMIC 解決方案 Integrated Power Mgmt IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
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