器件名称: AK2500B
功能描述: DS3/STS-1 Analog Line Receiver
文件大小: 78.03KB 共17页
简 介:ASAHI KASEI
[AK2500B]
AK2500B
DS3/STS-1 Analog Line Receiver
GENERAL DESCRIPTION
The AK2500B is a DSP based line receiver. It provides the analog receive line interface functions for a 44.736 MHz DS3 or 51.84 MHz STS-1 interface. The device operates from a single +3.3 Volt supply and is transparent to the framing format. -
FEATURE
“Robust” DSP based line receiver AK2500B Provides Complete Analog Line Receiver for DS3 and STS-1 Applications Provides Line Equalization, and Clock and Data Recovery Functions
PACKAGE
24 pin SOP
APPLICATIONS
Interfacing network transmission equipment such as SONET multiplexor and M13 to a DSX3 cross connect. Interfacing customer premises equipment to a line.
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BLOCK DIAGRAM
RLOL
TREF
BREF
IREF
RCLK
CLOCK RECOVERY
EXCLK
RPDATA RNDATA
DATA RECOVERY
GAIN and LINE EQUALIZATION
RIN
VDDA VSSA VDDD VSSD VDDC VSSC LOSTHR RLOS MODE2 MODE1 RESET LOS LOGIC
MS0005-E-00
-1-
1999/12
ASAHI KASEI
[AK2500B]
PIN LOCATION
24 PIN SOP Package
IREF LOSTHR RLOL RIN VDDA VDDA RESET BREF TREF VSSA VSSD RLOS
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19
MODE2 MODE1 VSSA VSSA VSSC RPDATA RNDATA RCLK VDDC VDDA VDDD EXCLK
AK2500B
18 17 16 15 14 13
MS0005-E-00
-2-
1999/12
ASAHI KASEI
[AK2500B]
PIN CONDITION
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Note: 1)External resister 4.9 kohm is connected between IREF and VSS. 2)Input impedance of RIN is more than 5kohm. 3)Pulled up to VDD with internal register. (typical 5……
