參數(shù)資料
型號: AXDA1700DLV3C
元件分類: 微處理器
英文描述: Microprocessor
中文描述: 微處理器
文件頁數(shù): 89/104頁
文件大?。?/td> 1769K
代理商: AXDA1700DLV3C
Chapter 11
Pin Descriptions
77
25175E—November 2002
AMD Athlon XP Processor Model 8 Data Sheet
Preliminary Information
For more information, see the “Required Circuits” chapter of
the
AMD Athlon Processor-Based Motherboard Design Guide
,
order# 24363.
VREFSYS Pin
VREFSYS (W5) drives the threshold voltage for the system bus
input receivers. The value of VREFSYS is system specific. In
addition, to minimize V
CC_CORE
noise rejection from VREFSYS,
include decoupling capacitors. For more information, see the
AMD Athlon Processor-Based Motherboard Design Guide
, order#
24363.
ZN and ZP Pins
ZN (AC5) and ZP (AE5) are the push-pull compensation circuit
pins. In Push-Pull mode (selected by the SIP parameter
SysPushPull asserted), ZN is tied to V
CC_CORE
with a resistor
that has a resistance matching the impedance Z
0
of the
transmission line. ZP is tied to VSS with a resistor that has a
resistance matching the impedance Z
0
of the transmission line.
Table 27. VID[4:0] Code to Voltage Definition
VID[4:0]
V
CC_CORE
(V)
VID[4:0]
V
CC_CORE
(V)
00000
00001
00010
00011
00100
00101
00111
01000
01001
01010
01011
01100
01101
01110
01111
1.850
1.825
1.800
1.775
1.750
1.725
1.675
1.650
1.625
1.600
1.575
1.550
1.525
1.500
1.475
10000
10001
10010
10011
10100
10101
10111
11000
11001
11010
11011
11100
11101
11110
11111
1.450
1.425
1.400
1.375
1.350
1.325
1.275
1.250
1.225
1.200
1.175
1.150
1.125
1.100
No CPU
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