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DS2165-DS2165Q Datasheet(PDF) 9 Page - Dallas Semiconductor |
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DS2165-DS2165Q Datasheet(HTML) 9 Page - Dallas Semiconductor |
9 / 17 page DS2165Q 9 of 17 HARDWARE MODE The hardware mode is intended for applications that do not have an external controller available or do not require the extended features offered by the serial port. Connecting the SPS pin to VSS disables the serial port, clears all internal register bits, and maps the IPD, U/ A , and CP/ EX bits for both channels to external bits (Table 3). In the hardware mode, both the input and output time slots default to time slot 0. Table 3. HARDWARE MODE PIN # NAME REGISTER LOCATION FUNCTION 6A0 CP/ EX (Channel X) Channel X Coding Configuration 0 = Expand 1 = Compress 7A1 AS0/AS1/AS2 (Channel X and Y) Algorithm Select (Table 4) 8A2 U/ A (Channel X) Channel X Data Format 0 = A-law 1 = m-law 9A3 CP/ EX (Channel Y) Channel Y Coding Configuration 0 = Expand 1 = Compress 10 A4 AS0/AS1/AS2 (Channel X and Y) Algorithm Select (Table 4) 11 A5 U/ A (Channel Y) Channel Y Data Format 0 = A-law 1 = m-law 22 SDI IPD (Channel Y) Channel Y Idle Select 0 = Channel Active 1 = Channel Idle 23 CS IPD (Channel X) Channel X Idle Select 0 = Channel Active 1 = Channel Idle NOTES: 1) SCLK must be connected to VSS when the hardware mode is selected. 2) When both channels are idled, power consumption is significantly reduced. 3) The NIL powers up within 800ms after either channel is returned to active from an idle state. |
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