AMD CPU AMD Sempron S754 2800+ 256Kb BOX SDC2800BABOX User Manual
Product codes
SDC2800BABOX
6
Interface Signals
Chapter 2
AMD Sempron™ Processor Model 10 Data Sheet
31993A-1 September 2004
AMD Preliminary Information
2.3
Push-Pull (PP) Drivers
The AMD Sempron processor model 10 supports push-pull (PP)
drivers. The system logic configures the processor with the
configuration parameter called SysPushPull (1=PP). The
impedance of the PP drivers is set to match the impedance of
the motherboard by two external resistors connected to the ZN
and ZP pins.
drivers. The system logic configures the processor with the
configuration parameter called SysPushPull (1=PP). The
impedance of the PP drivers is set to match the impedance of
the motherboard by two external resistors connected to the ZN
and ZP pins.
See “ZN and ZP Pins” on page 74 for more information.
2.4
AMD Athlon™ System Bus Signals
The AMD Athlon system bus is a clock-forwarded, point-to-
point interface with the following three point-to-point channels:
point interface with the following three point-to-point channels:
■
A 13-bit unidirectional output address/command channel
■
A 13-bit unidirectional input address/command channel
■
A 72-bit bidirectional data channel
Fo r m o r e i n f o r m a t i o n , s e e C h a p t e r 6 , “ 3 3 3 F S B
AMD Sempron™ Processor Model 10 Specifications” on page
2 1 , C h a p t e r 7 , “ E l e c t r ic a l D a t a ” o n p a g e 2 5 , a n d t h e
AMD Athlon™ and AMD Duron™ System Bus Specification,
order# 21902.
AMD Sempron™ Processor Model 10 Specifications” on page
2 1 , C h a p t e r 7 , “ E l e c t r ic a l D a t a ” o n p a g e 2 5 , a n d t h e
AMD Athlon™ and AMD Duron™ System Bus Specification,
order# 21902.