PXF4333 Datasheet, PDF (339/361 Pages) Infineon Technologies AG – ABM 3G ATM Buf fer Manager

ABM-3G
PXF 4333 V1.1
Electrical Characteristics
8.4
AC Characteristics
T_A = -40 to 85 °C, V_DD33 = 3.3 V ± 10%, V_DD18 = 1.8 V ± 10%, V_SS = 0 V
All inputs are driven to V_IH = 2.4 V for a logical 1
and to V_IL = 0.4 V for a logical 0
All outputs are measured at V_H = 2.0 V for a logical 1
and at
V_L = 0.8 V for a logical 0
The AC testing input/output waveforms are shown in Figure 8-1.
•
VH
VH
Test Points
VL
VL
Device
under
Test
CLOAD = 50 pF max
Figure 8-1 Input/Output Waveform for AC Measurements
Table 8-4 Clock Frequencies
Parameter
Symbol
Core clock (internal)
External core clock source
UTOPIA clocks at PHY-side
f_{int.coreclock}
SYSCLK
UTRXCLKU
UTTXCLKD
UTOPIA clock at Backplane-side UTRXCLKD
UTTXCLKU
Clock for external RAM
RAMCLK
Limit Values
min.
max.
25
52
25
52
f_{int.coreclock}/2
ΜΙΝ
f{ _{int. coreclock,}
52 MHz}
f_{int.coreclock}/2
ΜΙΝ
f{ _{int. coreclock,}
52 MHz}
f_{int.coreclock}/2
ΜΙΝ
f{ _{int. coreclock,}
52 MHz}
f_{int.coreclock}/2
ΜΙΝ
f{ _{int. coreclock,}
52 MHz}
f_{int.coreclock}
f_{int.coreclock}
Unit
MHz
MHz
MHz
MHz
MHz
MHz
Data Sheet
339
2001-12-17