Intel Pentium 4 Processor in the 478-PinPackage at 1.40 GHz, 1.50 GHz, 1.60 GHz, 1.70 GHz, 1.80 GHz, 1.90 GHz, and 2GHz
Pin Listing and Signal Definitions
Datasheet 63
AE26 VSS Power/Other
AF1 VSS Power/Other
AF2 VCC Power/Other
AF3 RESERVED
AF4 VCCVID Power/Other Input
AF5 VCC Power/Other
AF6 VSS Power/Other
AF7 VCC Power/Other
AF8 VSS Power/Other
AF9 VCC Power/Other
AF10 VSS Power/Other
AF11 VCC Power/Other
AF12 VSS Power/Other
AF13 VCC Power/Other
AF14 VSS Power/Other
AF15 VCC Power/Other
AF16 VSS Power/Other
AF17 VCC Power/Other
AF18 VSS Power/Other
AF19 VCC Power/Other
AF20 VSS Power/Other
AF21 VCC Power/Other
AF22 BCLK[0] Bus Clock Input
AF23 BCLK[1] Bus Clock Input
AF24 RESERVED
AF25 RESERVED
AF26 SKTOCC# Power/Other Output
B2 IGNNE# Asynch GTL+ Input
B3 THERMDA Power/Other
B4 VSS Power/Other
B5 SMI# Asynch GTL+ Input
B6 FERR# Asynch AGL+ Output
B7 VCC Power/Other
B8 VSS Power/Other
B9 VCC Power/Other
B10 VSS Power/Other
B11 VCC Power/Other
B12 VSS Power/Other
B13 VCC Power/Other
Table 31. Pin Listing by Pin Number
Pin
Number
Pin Name
Signal Buffer
Type
Direction
B14 VSS Power/Other
B15 VCC Power/Other
B16 VSS Power/Other
B17 VCC Power/Other
B18 VSS Power/Other
B19 VCC Power/Other
B20 VSS Power/Other
B21 D#[0] Source Synch Input/Output
B22 D#[01] Source Synch Input/Output
B23 VSS Power/Other
B24 D#[06] Source Synch Input/Output
B25 D#[09] Source Synch Input/Output
B26 VSS Power/Other
C1 TDI TAP Input
C2 VSS Power/Other
C3 PROCHOT# Asynch GTL+ Output
C4 THERMDC Power/Other
C5 VSS Power/Other
C6 A20M# Asynch GTL+ Input
C7 VSS Power/Other
C8 VCC Power/Other
C9 VSS Power/Other
C10 VCC Power/Other
C11 VSS Power/Other
C12 VCC Power/Other
C13 VSS Power/Other
C14 VCC Power/Other
C15 VSS Power/Other
C16 VCC Power/Other
C17 VSS Power/Other
C18 VCC Power/Other
C19 VSS Power/Other
C20 VCC Power/Other
C21 D#[04] Source Synch Input/Output
C22 VSS Power/Other
C23 D#[07] Source Synch Input/Output
C24 D#[08] Source Synch Input/Output
C25 VSS Power/Other
C26 D#[12] Source Synch Input/Output
Table 31. Pin Listing by Pin Number
Pin
Number
Pin Name
Signal Buffer
Type
Direction