AMD 10, 27493, 27488 Frequency Identification FID30, Vcca AC and DC Characteristics, Decoupling

Preliminary Information

26237C —May 2003 AMD Athlon™ XP Processor Model 10 Data Sheet

8.4Frequency Identification (FID[3:0])

Table 11 shows the FID[3:0] DC characteristics. For more information, see “FID[3:0] Pins” on page 74.

Table 11. FID[3:0] DC Characteristics

Parameter	Description	Min	Max
IOL	Output Current Low	6 mA
VOH	Output High Voltage	–	2.625 V 1
			VOH – VCC_CORE ≤ 1.60 V 2

Note:

1. The FID pins must not be pulled above 2.625 V, which is equal to 2.5 V plus a maximum of five percent.

2. Refer to “VCC_2.5V Generation Circuit” found in the section, “Motherboard Required Circuits,” of the AMD Athlon™ Processor- Based Motherboard Design Guide, order# 24363.

8.5VCCA AC and DC Characteristics

Table 12 shows the AC and DC characteristics for VCCA. For more information, see “VCCA Pin” on page 77

Table 12. VCCA AC and DC Characteristics

Symbol	Parameter	Min	Nominal	Max	Units	Notes
VVCCA	VCCA Pin Voltage	2.25	2.5	2.75	V	1
				VVCCA – VCC_CORE ≤ 1.60 V	–	2
IVCCA	VCCA Pin Current	0		50	mA/GHz	3

Notes:

1. Minimum and Maximum voltages are absolute. No transients below minimum nor above maximum voltages are permitted. 2. For more information, refer to the AMD Athlon™ Processor-Based Motherboard Design Guide, order# 24363.

3. Measured at 2.5 V.

8.6Decoupling

See the AMD Athlon™ Processor-Based Motherboard Design Guide, order# 24363, or contact your local AMD office for information about the decoupling required on the motherboard for use with the AMD Athlon XP processor model 10.

Chapter 8 Electrical Data 31