ICS9179-12 Datasheet, PDF (3/9 Pages) Integrated Circuit Systems – 3 DIMM Buffer

Technical Pin Function Descriptions
VDD
This is the power supply to the internal core logic of the
device as well as the clock output buffers for OUTPUT (0:12).
This pin operates at 3.3V volts. Clocks from the listed
buffers that it supplies will have a voltage swing from Ground
to this level. For the actual guaranteed high and low voltage
levels for the Clocks, please consult the DC parameter table
in this data sheet.
GND
This is the power supply ground (common or negative) return
pin for the internal core logic and all the output buffers.
OUTPUT (0:12)
These Output Clocks are use to drive Dynamic RAM’s and
are low skew copies of the CPU Clocks. The voltage swing
of the OUTPUTs output is controlled by the supply voltage
that is applied to VDD of the device, operates at 3.3 volts.
I²C
The SDATA and SCLOCK Inputs are used to program the
device. The clock generator is a slave-receiver device in the
I²C protocol. It will allow read-back of the registers. See
configuration map for register functions. The I²C
specification in Philips I²C Peripherals Data Handbook
(1996) should be followed.
BUF_IN
Input for Fanout buffers (OUTPUT 0:12).
VDDI
This is the power supply to I²C circuitry.
ICS9179 - 12
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