XRT83SL216IB View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT83SL216IB' PDF : 41 Pages View PDF
XRT83SL216
16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
4.0 SERIAL MICROPROCESSOR INTERFACE BLOCK
The serial microprocessor uses a standard 3-pin serial port with CS, SCLK, and SDI for programming the LIU.
Optional pins such as SDO, INT, and RESET allow the ability to read back contents of the registers, monitor
the LIU via an interrupt pin, and reset the LIU to its default configuration by pulling reset "Low" for more than
10µS. A simplified block diagram of the Serial Microprocessor is shown in Figure 20.
FIGURE 20. SIMPLIFIED BLOCK DIAGRAM OF THE SERIAL MICROPROCESSOR INTERFACE
CS
SCLK
SDI
Serial
Microprocssor
Interface
RESET
SDO
INT
FIGURE 21. MICROPROCESSOR SERIAL INTERFACE STRUCTURE
CS
SClk
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
SDI
SDO
R/W A0 A1 A2 A3 A4 A5 0 D0 D1 D2 D3 D4 D5 D6 D7
High Z
High Z
D0 D1 D2 D3 D4 D5 D6 D7
NOTE: If the R/W bit is set to "1", then this denotes a "READ" operation with the Microprocessor Serial Interface.
Conversely, if the R/W bit is set to "0", then this denotes a "WRITE" operation.
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