84
8317
8317
N/B Maintenance
N/B Maintenance
5. Pin Descriptions of Major Components
5.1 AMD Mobile K8 BGA754_SKT Pin(1)
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
