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CS61884 датащи(PDF) 12 Page - Cirrus Logic |
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CS61884 датащи(HTML) 12 Page - Cirrus Logic |
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12 / 72 page ![]() CS61884 12 DS485PP4 WR/DS/SDI/LEN0 84 J14 I Data Strobe/ Write Enable/Serial Data/Line Length Input IntelParallelHost Mode - This pin “WR” functions as a write enable. Motorola Parallel Host Mode - This pin “DS“ functions as a data strobe input. Serial Host Mode - This pin “SDI” functions as the serial data input. Hardware Mode - As LEN0, this pin controls the transmit pulse shapes for both E1 and T1/J1 modes. This pin also selects which mode is used E1 or T1/J1 (Refer to Table 5 on page 25). RD/RW/LEN1 85 J13 I Read/Write/ Read Enable/Line Length Input IntelParallelHost Mode - This pin “RD” functions as a read enable. Motorola Parallel Host Mode - This pin “R/W” functions as the read/write input signal. Hardware Mode - As LEN1, this pin controls the transmit pulse shapes for both E1 and T1/J1 modes. This pin also selects which mode is used E1 or T1/J1 (Refer to Table 5 on page 25). ALE/AS/SCLK/LEN2 86 J12 I Address Latch Enable/Serial Clock/Address Strobe/Line Length Input IntelParallelHost Mode - This pin “ALE” functions as the Address Latch Enable when configured for multiplexed ad- dress/data operation. Motorola Parallel Host Mode - This pin “AS” functions as the active “low” address strobe when configured for multi- plexed address/data operation. Serial Host Mode - This pin “SCLK” is the serial clock used for data I/O on SDI and SDO. Hardware Mode - As LEN2, this pin controls the transmit pulse shapes for both E1 and T1/J1 modes. This pin also selects which mode is used E1 or T1/J1 (Refer to Table 5 on page 25). CS/JASEL 87 J11 I Chip Select Input/Jitter Attenuator Select Host Mode - This active low input is used to enable ac- cesses to the microprocessor interface in either serial or parallel mode. Hardware Mode - This pin controls the position of the Jitter Attenuator. SYMBOL LQFP FBGA TYPE DESCRIPTION Pin State Jitter Attenuation Position LOW Transmit Path HIGH Receive Path OPEN Disabled |
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