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| 型號(hào)： | AMD-640CHIPSET |
| 英文描述： | Peripheral IC |
| 中文描述： | 外圍芯片 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 377K |
| 代理商： | AMD-640CHIPSET |
9
21340A/0—April 1997
AMD-640 Chipset I/O Model
Power, ground, and no-connect pins do not have R/L/C
values specified.
Model
(model_type, Vinl, Vinh, Vmeas, Cref, Rref, Vref)—
Specifies the type of I/O buffer.
In the model I/O, Vinl equals 0.8V, Vinh equals 2.0V, and
Vmeas = 1.5V. Cref, Rref, and Vref, which represent the
test load under which the specified propagation delays and
switching times are defined, equal 0. C_comp specifies the
capacitance of the silicon die.
Temperature Range
—Specifies the temperature range
within which the operation of the component is guaranteed.
Voltage Range
—Specifies the I/O voltage range.
Pulldown
—Specifies the voltage versus current (V/I) curves
of the pulldown device within the I/O buffer.
Pullup
—Specifies the V/I curves of the pullup device within
the I/O buffer.
GND Clamp
—Specifies the V/I curves of the ground clamp
device within the I/O buffer.
POWER Clamp
—Specifies the V/I curves of the power
clamp device within the I/O buffer.
Ramp
(dV/dt_r, dV/dt_f, R_load)—Specifies the rise and
fall times of a signal at a load defined by R_load. R_load is
equal to 50 ohms.
Rising Waveform
—Specifies the voltage versus time (V/T)
curves of the rising edge of the waveform.
Falling Waveform
—Specifies the V/T curves of the falling
edge of the waveform.
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