參數(shù)資料
型號： A1400AMT3C
廠商： ADVANCED MICRO DEVICES INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 1400 MHz, MICROPROCESSOR, CPGA453
封裝： STAGGERED, CERAMIC, PGA-453
文件頁數(shù)： 75/90頁
文件大?。?/td> 1497K
代理商： A1400AMT3C
Chapter 10
Pin Descriptions
63
23792I—June 2001
AMD Athlon Processor Model 4 Data Sheet
Preliminary Information
CONNECT Pin
CON NECT is an input from the sy stem used for powe r
management and clock-forward initialization at reset.
COREFB and
COREFB# Pins
COREFB and COREFB# are outputs to the system that provide
processor core voltage feedback to the system.
CPU_PRESENCE# Pin
CPU_PRESENCE# is connected to VSS on the processor
package. If pulled-up on the motherboard, CPU_PRESENCE#
can be used to detect the presence or absence of a processor in
the Socket A–style socket.
DBRDY and DBREQ#
Pins
DBRDY (AA1) and DBREQ# (AA3) are routed to the debug
connector. DBREQ# is tied to VCC_CORE with a pullup
resistor.
FERR Pin
FERR is an output to the system that is asserted for any
unmasked numerical exception independent of the NE bit in
CR0. FERR is a push-pull active High signal that must be
inverted and level shifted to an active Low signal. For more
information about FERR and FERR#, see the “Required
Circuits ” chapter of the AMD Athlon Pr ocessor- Ba se d
Motherboard Design Guide order# 24363.
FID[3:0] Pins
AC and DC characteristics for FID[3:0].
FID[3] (Y3), FID[2] (Y1), FID[1] (W3), and FID[0] (W1) are the
4-bit processor clock-to-SYSCLK ratio. Table 18 on page 64
describes the encodings of the clock multipliers on FID[3:0].
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