Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
CD22103AD Datasheet(PDF) 3 Page - Intersil Corporation |
|
CD22103AD Datasheet(HTML) 3 Page - Intersil Corporation |
3 / 6 page 3 Functional Descriptionup The CD22103A is designed to code and decode HDB3 signals which are coded as binary digital signals (NRZ-lN) and (+HDB3 IN, -HDB3 IN), accompanied by sampling clocks (CTX) and (CRX). The two binary coded HDB3 outputs, (+HDB3 OUT, -HDB3 OUT) may be externally mixed to create the ternary HDB3 signals (See Figure 1). The two binary HDB3 input signals have been split from the input ternary HDB3 in an external line receiver. The receiver decoder converts binary unipolar inputs (+HDB3 IN, -HDB3 IN), which were externally split from ternary bipolar HDB3 signals, and a synchronous clock signal (CRX) into binary unipolar NRZ signals (NRZ-OUT). Received signals not consistent with HDB3 coding rules are detected as errors. The receiver error output (ERR) is active high during one CRX period of each bit of received data that is inconsistent with HDB3 coding rules. An input string consisting of all ones (or marks) is detected and signaled by a high level at the Alarm Signal (AIS) output. The AIS output is set to a high level when less than three zeros are received during two consecutive periods of the Reset Alarm Inhibit Signal (RAIS). The AIS output is subsequently reset to a low level when three or more zeros are received during two periods of the reset signal (RAIS). A diagnostic Loop-Test Mode may be entered by driving the Loop Test Enable Input (LTE) high. In this mode the HDB3 transmitter outputs (+HDB3 OUT, -HDB3 OUT) are internally connected to the HDB3 receiver inputs, and the external HDB3 receiver inputs, and the external HDB3 receiver inputs (+HDB3 IN, -HDB3 IN) are disabled. The NRZ binary output signal (NRZ - OUT) corresponds to the NRZ binary input signal (NRZ - IN) delayed by approximately 8 clock periods. The Clock Receiver Output (CKR) is the product of the two HDB3 input signals or’ed together. The CRX clock signal may be derived from the CKR signal with external clock extraction circuitry. In the Loop Test Mode (LTE = 1) CKR is the product of the +HDB3 OUT and -HDB3 OUT signals or’ed together. The CD22103A may also be used to perform the AMI to NRZ coding/decoding function. To use the CD22103A in this mode, the HDB3/AMI control input is driven low. Error Detection Received HDB3/AMl binary input signals are checked for coding violations, and an error signal (ERR) is generated as described below. HDB3 SIGNALS HDB3/AML = HIGH The error signal (ERR) is flagged high for one CTX period if a violation pulse ( ±V) is received of the same polarity as the last received violation pulse. CRX to CKR (CRX = 8.448MHz) Pretrigger tP 5- - 20 ns Delay tD 5- - 20 ns DYNAMIC OUTPUT Transmitter Coder, CTX to HDB3 OUT: Data Propagation Delay Time tDD 3- - 90 ns Handling Delay Time tHD 1- 4- Clock Period HDB3 OUT Output Pulse Width (Clock duty cycle = 50%) fCL = 2.048MHz tW 3 238 - 260 ns fCL = 8.448MHz tW 353 - 65 Receiver Decoder CRX to NRZ OUT: Data Propagation Delay Times tDD 4- - 90 ns Handling Delay Time tHD 2- 4- Clock Period HDB3 IN to CKR HDB3 Propagation Delay Time LTE = 0 tIN CKR 4- - 65 ns LTE = 1 4 - - 30 ns Electrical Specifications TA = -40 oC to 85oC for Plastic Package; -55oC to 125oC for Ceramic Package; V DD = 4.5V to 5.5V; CL = 15pF. (Continued) PARAMETER SYMBOL FIGURE MIN TYP MAX UNITS CD22103A |
Número de pieza similar - CD22103AD |
|
Descripción similar - CD22103AD |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |