82443LX Datasheet, PDF (110/144 Pages) Intel Corporation – INTEL 440LX AGPSET: 82443LX PCI A.G.P. CONTROLLER (PAC)

INTEL 82443LX (PAC)
5.2. Power Characteristics
E
Table 19. Power Characteristics
Functional Operating Range (VTT = 1.5V ± 10%, Vcc = 3.3V ±5%; TCASE = 0oC to +100oC)
Symbol
Parameter
Min Max Unit
Notes
P_LX
Thermal Power Dissipation for 82443LX
3.0
W Note 1, @ 66 MHz/ 33MHz
I_LEAK
5.0V to 3.3V Power Supply Leakage
Current
20
uA Note 2
I_DDQ
Quiescent Power Supply Current for
82443LX
30 mA Note 3, @ 0 MHz/0 MHz
I_CC-LX
Power Supply Current for 82443LX
1300 mA Note 4, @ 66 MHz/33 MHz
NOTES:
1. This specification is a combination of core power (ICC) and power dissipated in the GTL+ outputs and I/O.
2. This parameter is specified at VCC5 (5V_BIAS) - V CC3 ≤ 2.25V. In addition, to insure a proper power
sequencing and protect the PAC internal circuitry, a 1 KΩ series resistor is recommended on the REV5V
pin of PAC to 5V power source, and Zener diode is also recommended between 5V and 3.3V power
source.
3. This is the maximum supply current consumption when all interfaces are idle and the clock inputs are
turned off, typically with HCLKIN/PCLKIN running at 66/33 MHz the I_DDQ is 300mA
4. The ICC specification does not include the GTL+ output current to ground Signal Groups
5.3. Signal Groupings
To ease discussion of the AC and DC characteristics, signals on the 440LX have been combined into groups
of similar characteristics. These will be referred to in all subsequent discussion. Memory interface signals:
RCSA[7:6]#/MAB[3:2]#, RCSB[7:0]#/MAB[13:6]#, SRAS[3]#/MAB[5]#, SCAS[3]#/MAB[4]# are dual
function signals. These signals will have difference functions depending upon the selection of Configuration
#1 Mode or Configuration #2 Mode.
Signal functionality in each configuration below is in BOLD type.
Configuration #1: RCSA[7:6]#/MAB[3:2]#, RCSB[7:0]#/MAB[13:6]#, SRAS[3]#/MAB[5]#,
SCAS[3]#/MAB[4]#
Configuration #2: RCSA[7:6]#/MAB[3:2]#, RCSB[7:0]#/MAB[13:6]#, SRAS[3]#/MAB[5]#,
SCAS[3]#/MAB[4]#
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