Datacom Systems D56 Spécifications Page 102

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Si5040
102 Rev. 1.3
Power and Ground
1, 5, 8,
17, 20,
23, 28,
31
GND P GND Supply Ground.
Connect to system GND. Ensure a very low impedance path
for optimal performance.
Paddle GND P GND Paddle Ground.
Must connect to system GND. Ensure a very low impedance
path for optimal performance.
12, 15,
27,32
VDD P 1.8 VDC Supply Voltage.
Nominally 1.8 V. Upon power up,if VDD and VDDIO are not
tied to the same supply voltage, the VDD voltage must
achieve 1.5 V before VDDIO is applied and reaches .25 V.
Failure to do so may cause the SD line to glitch low.
4 VDDIO P 3.3 VDC
or
1.8 VDC
LVTTL I/O Supply Voltage.
Connect to either 1.8 or 3.3 V. When connected to 3.3 V,
LVTTL compatible voltage swings are supported on the LVTTL
inputs and LVTTL outputs of the device.
NC Pins
11
10
NC.
Do not connect to these pins.
Table 13. Si5040 Pin Descriptions (Continued)
Pin Name Type* Level Description
*Note: TYPE: P = Power; AI = Analog Input; AO = Analog Output; DI = Digital Input; DO = Digital Output; DIO = Digital
Input/Output.
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