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8399
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Miscellaneous Pin Descriptions
Signal Name Type Description
RESET_L I-IOS System Reset
PWROK I-IOS Indicates that voltages and clocks have reached specified
operation
LDTSTOP_L I-IOS HyperTransport™ Technology Stop Control Input. Used for
power management and for changing HyperTransport link width
and frequency.
VID[4:0] O-IOS Voltage ID to the regulator
THERMDA A Anode (+) of the thermal diode
THERMDC A Cathode (–) of the thermal diode
THERMTRIP_L O-IO-O
D
Thermal Sensor Trip output, asserted at nominal temperature of
125 ℃.
COREFB_H/L A Differential feedback for VDD Power Supply
VDDIOFB_H/L A Differential feedback for VDDIO Power Supply
CORE_SENSE A VDD voltage monitor pin
VDDA S Filtered PLL Supply Voltage
VTT_SENSE A VTT voltage monitor pin
VDDIO_SENSE A VDDIO voltage monitor pin
VDD S Core power supply
VDDIO S DDR SDRAM I/O ring power supply
VLDT_A
VLDT_B
S HyperTransport™ I/O ring power supply for side A and side B
of the package
VTT_A
VTT_B
S VTT regulator voltage for side A and side B of the die
VSS S Ground
JTAG Pin Descriptions
Signal Name Type Description
TCK I-IOS JTAG Clock
TMS I-IOS JTAG Mode Select
TRST_L I-IOS JTAG Reset
TDI I-IOS JTAG Data Input
TDO O-IOS JTAG Data Output
Debug Pin Descriptions
Signal Name Type Description
DBREQ_L
I-IOS
Debug Request
DBRDY
O-IOS
Debug Ready
Clock Pin Descriptions
Signal Name Type Description
CLKIN_H/L I-IOD 200-MHz PLL Reference Clock
FBCLKOUT_H/L O-IOD Core Clock PLL 200-MHz Feedback Clock
5.1 AMD Mobile Athlon 64(ClawHammer) Processor(2)
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