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LC898093 Datenblatt(PDF) 11 Page - Sanyo Semicon Device |
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LC898093 Datenblatt(HTML) 11 Page - Sanyo Semicon Device |
11 / 13 page IORDY (output) Indicates that the drive is ready to respond. Used during data transfers. This signal will be low when the drive is not ready. PDIAG (input/output) Signal asserted by drive 1 to indicate to drive 0 that diagnostics have completed. HRST (input) Reset signal from the host. The IDE interface is reset by a low-level input to this pin. <Microcontroller Interface Pins> CS (input) Chip select signal from the microcontroller. The microcontroller interface is active when this pin is low. RD, WR (input) Connect the microcontroller read and write lines to these inputs. SWAIT (input) Wait signal output to the microcontroller. When accessing buffer RAM, the microcontroller must wait if this pin is low. SUA0 to SUA7 (input) Internal register address lines D0 to D7 (input/output) Microcontroller data bus. These pins have built-in pull-up resistors. INT0, INT1 (output) Interrupt request signals output to the microcontroller. INT1 can be set to output the ATAPI interrupt by setting INT1EN (Conf-R11 bit 7) These are open drain outputs with built-in 80 k Ω (at room temperature, 5 V) pull-up resistors. <Buffer RAM Pins> I/O0 to I/O15 (input/output) Buffer RAM data bus. These pins have built-in pull-up resistors. RA0 to RA9 (output) Buffer RAM address lines. RAS0, RAS1, RAS2 (output) Buffer DRAM RAS outputs. Normally, RAS0 is used. However, if two 16-Mbit DRAMs are used, connect the RAS0 and RAS1 lines to the RAS pins on the DRAMs. If four 16-Mbit DRAMs are used, connect the RAS0, RAS1, RAS2, and LWE lines to the RAS pins on the DRAMs. CAS0, CAS1 (output) Buffer DRAM CAS outputs. Normally, CAS0 is used. However, if two 16-Mbit DRAMs are used, connect the CAS0 output to the CAS pins on the DRAMs. If 2-CAS type DRAMs are used, connect CAS0 to UCAS and CAS1 to LCAS. OE (output) Buffer RAM read output. UWE, LWE (output) Buffer RAM write outputs. Connect these to the corresponding pins. If 2-CAS type DRAMs are used, UWE must be connected. (Leave LWE open.) 1. Analog Interface Pins RREC (input) Optical discrimination input. FE (input) Focus error signal input. TE (input) Tracking error signal input. VREF (input) Input for the servo system reference voltage. No. 6495-11/14 LC898093 |
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Ähnliche Beschreibung - LC898093 |
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