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DSC2110 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Low-Jitter I2C/SPI Programmable CMOS Oscillator - Micrel

भाग संख्या DSC2110
समारोह Low-Jitter I2C/SPI Programmable CMOS Oscillator
मैन्युफैक्चरर्स Micrel 
लोगो Micrel लोगो 
पूर्व दर्शन
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<?=DSC2110?> डेटा पत्रक पीडीएफ

DSC2110 pdf
DSC2110 DSC2210
Low-Jitter I2C/SPI Programmable CMOS Oscillator
Pin Description
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin Name
Enable
NC
NC
SCLK
GND
SDA
MOSI
SCL
MISO
CS_bar
SS
Output1
NC
NC
NC
VDD2
VDD
FS
Pin Type
I
NA
NA
I
Power
I
I
O
I
I
O
NA
NA
NA
Power
Power
I
Description
Enables outputs when high and disables when low
Leave unconnected or grounded
DSC2110: Leave unconnected or grounded
DSC2210: Serial clock from master
Ground
DSC2110: I2C Serial Data
DSC2210: SPI Serial Data from Master to Slave
DSC2110: I2C Serial Clock
DSC2210: SPI Serial Data from Slave to Master
DSC2110: I2C Chip Select (Active Low)
DSC2210: SPI Slave Select (Active Low)
CMOS output 1
Leave unconnected or grounded
Leave unconnected or grounded
Leave unconnected or grounded
Power Supply
Power Supply
Default output clock frequency bit
Operational Description
The DSC2110/2210 is a CMOS oscillator
consisting of a MEMS resonator and a support
PLL IC. The CMOS output is generated
through independent 8-bit programmable
dividers from the output of the internal PLL.
DSC2110/2210 allows for easy programming
of the output frequencies using I2C/SPI
interface. Upon power-up, the initial output
frequency is controlled by an internal pre-
programmed memory (OTP). This memory
stores all coefficients required by the PLL for
two different default frequencies. The control
pin (FS) selects the initial frequency. Once
the device is powered up, a new output
frequency can be programmed. Programming
details are provided in the Programming
Guide. Standard default frequencies are
described in the following sections. Discera
supports customer defined versions of the
DSC2110/2210.
When Enable (pin 1) is floated or connected to
VDD, the DSC2110/2210 is in operational
mode. Driving Enable to ground will disable
both output drivers (hi-impedance mode).
The DSC2110/2210 has programmable output
drive strength, which can be controlled via
I2C/SPI. Table 1 displays typical rise / fall
times for the output with a 15pf load
capacitance as a function of these control bits
at VDD=3.3V and room temperature.
Table 1. Rise/Fall times for drive strengths
Output Drive Strength Bits
[OXS2, OXS1, OXS0] - Default [111]
X=1 for output1, and 2 for output2
000 001 010 011 100 101 110 111
tr (ns) 2.1 1.7 1.6 1.4 1.3 1.3 1.2 1.1
tf (ns) 2.5 2.4 2.4 2 1.8 1.6 1.3 1.3
_____________________________________________________________________________________________________________________________ _________________
DSC2110 DSC2210
Page 2
MK-Q-B-P-D-12050101

विन्यास 6 पेज
डाउनलोड[ DSC2110 Datasheet.PDF ]


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