46136 AMD RX881 Databook 1.40
© 2011 Advanced Micro Devices, Inc.
5-2
Proprietary
Electrical Characteristics
Table 5-4 DC Characteristics for HyperTransport™ and PCI-E Differential Clock (HT_REFCLK, GFX_REFCLK,
GPPSB_REFCLK, 100MHz)
Table 5-3 DC Characteristics for POWERGOOD
Symbol
Description
Minimum
Typical
Maximum
VIL
Input Low Voltage
0
0V
300mV
VIH
Input High Voltage
1.62V
1.8V
1.98V
Symbol
Description
Minimum
Maximum
Unit
V
IL
Differential Input Low Voltage
-
-150
mV
V
IH
Differential Input High Voltage
+150
-
mV
V
CROSS
Absolute Crossing Point Voltage
+250
+550
mV
V
CROSS DELTA
Variation of V
CROSS
over all rising
clock edges
-
+140
mV
V
RB
Ring-back Voltage Margin
-100
+100
mV
V
IMAX
Absolute Max Input Voltage
-
+1.15
V
V
IMIN
Absolute Min Input Voltage
-
-0.15
V