参数资料
型号: TMDXBDKFP5515
厂商: Texas Instruments
文件页数: 50/159页
文件大小: 0K
描述: KIT DEV FINGERPRINT C5515
标准包装: 1
传感器类型: 指纹
接口: USB
电源电压: 5V
嵌入式: 是,MCU,16 位
已供物品: 板,扩展板,线缆,迷你型 DVD,传感器
已用 IC / 零件: C5515
产品目录页面: 718 (CN2011-ZH PDF)
其它名称: 296-27452
SPRS645F – AUGUST 2010 – REVISED OCTOBER 2013
3.2.1.3
LDO Control
All three LDOs can be simultaneously disabled via software by writing to either the BG_PD bit or the
LDO_PD bit in the RTCPMGT register (see Figure 5-26 ). When the LDOs are disabled via this
mechanism, the only way to re-enable them is by asserting the WAKEUP signal pin (which must also have
been previously enabled to allow wakeup), or by a previously enabled and configured RTC alarm, or by
cycling power to the CV DDRTC pin. Note: CV DDRTC must be externally powered. None of the on-chip LDOs
can be used to power CV DDRTC .
ANA_LDO: The ANA_LDO is only disabled by the BG_PD and the LDO_PD mechanism described above.
Otherwise, it is always enabled.
DSP_LDO: The DSP_LDO can be statically disabled by the DSP_LDO_EN pin as described in
Section 3.2.1.2 , LDO Outputs . It can be also dynamically disabled via the BG_PD and the LDO_PD
mechanism described above. The DSP_LDO can change its output voltage dynamically by software via
the DSP_LDO_V bit in the LDOCNTL register (see Figure 3-1 ). The DSP_LDO output voltage is set to 1.3
V at reset.
USB_LDO: The USB_LDO can be independently and dynamically enabled or disabled by software via the
USB_LDO_EN bit in the LDOCNTL register (see Figure 3-1 ). The USB _LDO is disabled at reset.
Table 3-3 shows the ON/OFF control of each LDO and its register control bit configurations.
50
Device Configuration
Product Folder Links: TMS320C5515
Copyright ? 2010–2013, Texas Instruments Incorporated
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