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| 型号： | TMDXBDKFP5515 |
| 厂商： | Texas Instruments |
| 文件页数： | 42/159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 |
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SPRS645F – AUGUST 2010 – REVISED OCTOBER 2013
2.5.14 Regulators and Power Management Terminal Functions
Table 2-19. Regulators and Power Management Terminal Functions
SIGNAL
NAME
NO.
TYPE (1)
(2)
OTHER (3)
(4)
DESCRIPTION
Regulators
DSP_LDO output. When enabled, this output provides a regulated 1.3 V or 1.05 V
output and up to 250 mA of current (see the I SD parameter in Section 4.3 , Electrical
Characteristics Over Recommended Ranges of Supply Voltage and Operating
DSP_LDOO
E10
S
Temperature). The DSP_LDO is intended to supply current to the digital core circuits
only (CV DD ) and not external devices. For proper device operation, the external
decoupling capacitor of this pin should be 5μF ~ 10μF. For more detailed
information, see Section 5.3.4 , Power-Supply Decoupling .
When disabled, this pin is in the high-impedance (Hi-Z) state.
LDOI
F14,
F13,
B12
S
LDO inputs. For proper device operation, LDOI must always be powered. The LDOI
pins must be connected to the same power supply source with a voltage range of
1.8 V to 3.6 V. These pins supply power to the internal LDOs, the bandgap
reference generator circuits, and serve as the I/O supply for some input pins.
DSP_LDO enable input. This signal is not intended to be dynamically switched.
0 = DSP_LDO is enabled. The internal POR monitors the DSP_LDOO pin voltage
and generates the internal POWERGOOD signal.
DSP_LDO_EN
D12
I
–
LDOI
1 = DSP_LDO is disabled. The internal POR voltage monitoring is also disabled.
The interna l POWERGOOD signal is forced high and the external reset signal on
the RESET pin (D6) is the only source of the device reset. Note, the device's
internal reset signal is generated as the logical AND of the RESET pin and the
internal POWERGOOD signal.
USB_LDO output. This output provides a regulated 1.3 V output and up to 25 mA of
current (see the I SD parameter in Section 4.3 , Electrical Characteristics Over
Recommended Ranges of Supply Voltage and Operating Temperature). For proper
USB_LDOO
F12
S
device operation, this pin must be connected to a 1 μ F ~ 2 μ F decoupling capacitor
to V SS . For more detailed information, see Section 5.3.4 , Power-Supply Decoupling .
This LDO is intended to supply power to the USB_ V DD1P3 , USB_V DDA1P3 pins and
not external devices.
ANA_LDO output. This output provides a regulated 1.3 V output and up to 4 mA of
current (see the I SD parameter in Section 4.3 , Electrical Characteristics Over
Recommended Ranges of Supply Voltage and Operating Temperature ).
ANA_LDOO
A12
S
For proper device operation, this pin must be connected to an ~ 1.0 μ F decoupling
capacitor to V SS . For more detailed information, see Section 5.3.4 , Power-Supply
Decoupling . This LDO is intended to supply power to the V DDA_ANA and V DDA_PLL
pins and not external devices.
Bandgap reference filter signal. For proper device operation, this pin needs to be
bypassed with a 0.1 μ F capacitor to analog ground (V SSA_ANA ).
BG_CAP
B13
A, I/O
This external capacitor provides filtering for stable reference voltages & currents
generated by the bandgap circuit. The bandgap produces the references for use by
the System PLL, SAR, and POR circuits.
(1)
(2)
(3)
(4)
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to
float. When they are configured as input or high-impedance state, and not driven to a known state, they may cause an excessive IO-
supply current. Prevent this current by externally terminating it or enabling IPD/IPU, if applicable.
IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup/pulldown resistors and situations where external
pullup/pulldown resistors are required, see Section 3.8.1 , Pullup/Pulldown Resistors .
Specifies the operating I/O supply voltage for each signal
42
Device Overview
Product Folder Links: TMS320C5515
Copyright ? 2010–2013, Texas Instruments Incorporated
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