ICS952703BFT IDT, Integrated Device Technology Inc, ICS952703BFT Datasheet - Page 14

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ICS952703BFT

Manufacturer Part Number
ICS952703BFT
Description
IC TIMING CTRL HUB K7 48-SSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Timing Control Hubr
Datasheet

Specifications of ICS952703BFT

Input
Crystal
Output
Clock
Frequency - Max
217.9MHz
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
48-SSOP
Frequency-max
217.9MHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
952703BFT
Shared Pin Operation -
Input/Output Pins
The I/O pins designated by (input/output) serve as dual
signal functions to the device. During initial power-up, they
act as input pins. The logic level (voltage) that is present on
these pins at this time is read and stored into a 5-bit internal
data latch. At the end of Power-On reset, (see AC
characteristics for timing values), the device changes the
mode of operations for these pins to an output function. In
this mode the pins produce the specified buffered clocks to
external loads.
To program (load) the internal configuration register for these
pins, a resistor is connected to either the VDD (logic 1) power
supply or the GND (logic 0) voltage potential. A 10 Kilohm (10K)
resistor is used to provide both the solid CMOS programming
voltage needed during the power-up programming period and to
provide an insignificant load on the output clock during the
subsequent operating period.
0813B—05/17/05
Integrated
Circuit
Systems, Inc.
Device
Pad
Programming
Header
Via to Gnd
Series Term. Res.
Fig. 1
14
Figure 1 shows a means of implementing this function
when a switch or 2 pin header is used. With no jumper is
installed the pin will be pulled high. With the jumper in
place the pin will be pulled low. If programmability is not
necessary, than only a single resistor is necessary. The
programming resistors should be located close to the series
termination resistor to minimize the current loop area. It is
more important to locate the series termination resistor
close to the driver than the programming resistor.
8.2K W
2K W
Clock trace to load
Preliminary Product Preview
Via to
VDD
ICS952703

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