
NS9750B-A1 pinout and signal descriptions
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NS9750B-A1 Datasheet 03/2006
NS9750B-A1 pinout and signal descriptions
Each pinout table applies to a specific interface, and contains the following information:
More detailed signal descriptions are provided for selected modules.
System Memory interface
Heading Description
Pin # The pin number assignment for a specific I/O signal.
Signal
Name
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.
_n in the signal name indicates that this signal is active low.
U/D U or D indicates whether the pin is a pullup resistor or a pulldown resistor:
U — Pullup (input current source)
D — Pulldown (input current sink)
If no value appears, that pin is neither a pullup nor pulldown resistor.
I/O The type of signal — input, output, or input/output.
OD
(mA)
The output drive strength of an output buffer. The NS9750B-A1 uses one of three drivers:
2 mA
4 mA
8 mA
Pin # Signal Name
U/D
OD
(mA)
I/O Description
A21 addr[0] 8 O Address bus signal
B20 addr[1] 8 O Address bus signal
C19 addr[2] 8 O Address bus signal
A20 addr[3] 8 O Address bus signal
B19 addr[4] 8 O Address bus signal
C18 addr[5] 8 O Address bus signal
A19 addr[6] 8 O Address bus signal
A17 addr[7] 8 O Address bus signal
C16 addr[8] 8 O Address bus signal
B16 addr[9] 8 O Address bus signal
A16 addr[10] 8 O Address bus signal
D15 addr[11] 8 O Address bus signal
Table 5: System Memory interface pinout
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