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參數(shù)資料
| 型號： | CD6420 |
| 廠商： | Cirrus Logic, Inc. |
| 英文描述： | FULL DUPLEX SPEAKERPHONE CHIP |
| 中文描述： | 的全雙工免提通話芯片 |
| 文件頁數(shù)： | 32/52頁 |
| 文件大?。?/td> | 815K |
| 代理商： | CD6420 |
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CS6420
32
DS205PP2
NI - Network Interface Input, Pin 17
Input to the network side analog-to-digital converter (far-end input/receive input). This input
expects a single-pole RC anti-aliasing filter with a corner frequency of 8 kHz. Maximum signal
level before clipping at this point is 1 V
rms
(2.8 V
pp
), assuming default settings for the Rx
Analog Gain.
Microcontroller Interface
RST - Active Low Reset Input, Pin 5
When RST is held low, the CS6420 is put into a low power mode with all functional blocks
idle. When RST goes high, the CS6420 is started in a known state.
DRDY - Active Low Microcontroller Interface Data Ready Input, Pin 6
DRDY is a low pulse used to gate valid input data into the Microcontroller Interface.
STROBE - Microcontroller Interface Clock Input, Pin 7
The rising edge of STROBE latches DATA into the Microcontroller Interface while DRDY is
low.
DATA - Microcontroller Interface Data Input, Pin 8
DATA is latched into the Microcontroller Interface on the rising edge of STROBE.
Clock
CLKI - Clock Oscillator Input, Pin 14
A 20.480 MHz parallel-resonant crystal should be connected between CLKI and CLKO.
Alternatively, CLKI may be driven directly with an 20.480 MHz CMOS level clock.
CLKO - Clock Oscillator Output, Pin 13
A 20.480 MHz parallel-resonant crystal should be connected between CLKI and CLKO. Must
be floating if CLKI is driven directly with a CMOS level clock.
Power Supply
AVDD - Analog Supply, Pin 1
+5 Volt analog power supply.
AGND - Analog Ground, Pin 2
Analog ground reference.
DVDD - Digital Supply, Pin 16
+5 Volt digital power supply.
DGND - Digital Ground, Pin 15
Digital ground reference.
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