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ADDR11 Datasheet(PDF) 10 Page - List of Unclassifed Manufacturers |
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ADDR11 Datasheet(HTML) 10 Page - List of Unclassifed Manufacturers |
10 / 68 page P i no ut d e tail tabl es 6 NS 75 20 Da ta shee t 03 /2 00 6 Pinout detail tables Each pinout table applies to a specific interface and contains the following information: Notes: NO CONNECT as a pin description means do not connect to this pin. The 177th pin (package ball) is for alignment of the package on the PCB. System Bus interface Signal The pin name for each I/O signal. Some signals have multiple function modes and are identified accordingly. The mode is configured through firmware using one or more configuration registers. Pin The pin number assignment for a specific I/O signal. U next to the pin number indicates that the pin is a pullup resistor. D next to the pin number indicates that the pin is a pulldown resistor. No value next to the pin indicates that the pin has neither a pullup nor pulldown resistor. See Figure 5, "Internal pullup characteristics," on page 24 and Figure 6, "Internal pulldown characteristics," on page 25 for an illustration of the characteristics of these pins. Use the figures to select the appropriate value of the complimentary resistor to drive the signal to the opposite logic state. For those pins with no pullup or pulldown resistor, you must select the appropriate value per your design requirements. _ An underscore (bar) indicates that the pin is active low. I/O The type of signal — input, output, or input/output. OD The output drive strength of an output buffer. The NS7520 uses one of three drivers: 2 mA 4 mA 8 mA Symbol Pin I/O OD Description BCLK A6 0 8 Synchronous bus clock External bus Other External bus Other ADDR27 CS0OE_ N10 U I/O 4 Addr bit 27 Logical AND of CS0_ and OE_ ADDR26 CS0WE_ P10 U I/O 4 Addr bit 26 Logical AND of CS_ and WE_ External bus External bus ADDR25 M10 U I/O 4 Remainder of address bus (through ADDR0) ADDR24 R10 U I/O 4 ADDR23 N9 U I/O 4 ADDR22 R9 U I/O 4 ADDR21 M9 U I/O 4 |
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