 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CS61535A-IP1 Datasheet(PDF) 38 Page - Cirrus Logic |
|
||||||||||||||||||||||||||||||
CS61535A-IP1 Datasheet(HTML) 38 Page - Cirrus Logic |
|
|
38 / 48 page  Performance Monitor alarm. The LED labeled LOS illuminates when the line interface receiver has detected a loss of signal. Extended Hardware Mode In the Extended Hardware operating mode, the line interface is configured using DIP switch S2. The digital control inputs to the device selected by S2 include: transmit all ones (TAOS), local loopback (LLOOP), remote loopback (RLOOP), transmit line length selection (LEN2, LEN1, LEN0), transmit line code (TCODE), and receive line code (RCODE). Closing a DIP switch (mov- ing it towards the S2 label) sets the device control pin of the same name to logic 1 (+5 Volts). Note that the TCODE and RCODE options are active low and are enabled when the switch is moved away from the S2 label. The parallel chip select input PCS is tied to ground in Extended Hard- ware mode to enable the device to be reconfig- ured when S2 is changed. In addition, the host processor interface connector JP1 should not be used in Extended Hardware mode. Two LED status indicators are provided in Ex- tended Hardware mode. The LED labeled DPM (AIS) illuminates when the line interface detects the receive blue alarm (AIS). The LED labeled LOS illuminates when the line interface receiver has detected a loss of signal. Host Mode In the Host operating mode, the line interface is configured using a host processor connected to the serial interface port JP1. The S2 switch posi- tion labeled CLKE selects the active edge of SCLK and RCLK. Closing the CLKE switch se- lects RPOS and RNEG to be valid on the falling edge of RCLK and SDO to be valid on the rising edge of SCLK as required by the CS2180B T1 framer. All other DIP switch positions on S2 should be open (logic 0) to prevent shorting of the serial in- terface signals. Resistor R15 is a current limiting resistor that prevents the serial interface signals from being shorted directly to the +5 Volt supply if any S2 switch, other than CLKE, is closed. Jumper JP3 should be out so the INT pin may be externally pulled-up at the host processor inter- rupt pin. Two LED status indicators are provided in Host mode. The LED labeled DPM (AIS) illuminates when the line interface asserts the Driver Per- formance Monitor alarm. The LED labeled LOS illuminates when the line interface receiver has detected a loss of signal. Manual Reset A manual reset circuit is provided that can be used in Hardware and Extended Hardware modes. The reset circuit consists of S1, R4, R16, C4, D8, and D9. Pressing switch S1 forces both LLOOP and RLOOP to a logic 1 and causes a reset. A reset is only necessary for the CS61534 device to calibrate the center frequency of the re- ceiver clock recovery circuit. All other line inter- face units use a continuously calibrated clock re- covery circuit that eliminates the reset require- ment. TRANSMIT CIRCUIT The transmit clock and data signals are supplied on BNC inputs labeled TCLK, TPOS(TDATA), and TNEG. In the Hardware and Host operating modes, data is supplied on the TPOS(TDATA) and TNEG connectors in dual NRZ format. In the Extended Hardware operating mode, data is sup- plied in NRZ format on the TPOS(TDATA) con- nector and TNEG is not used. The transmitter output is transformer coupled to the line through a transformer denoted as T1 in Figure 1. The signal is available at the TTIP and TRING binding posts. Capacitor C5 is the recom- mended 0.47 µF DC blocking capacitor. LINE INTERFACE EVALUATION BOARD 38 DS40DB3 |
Similar Part No. - CS61535A-IP1 |
|
Similar Description - CS61535A-IP1 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
