ANXL1250FYC3F AMD (ADVANCED MICRO DEVICES), ANXL1250FYC3F Datasheet - Page 31

• Manufacturer Part Number: ANXL1250FYC3F
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ANXL1250FYC3F

• Lead Free Status / Rohs Status: Compliant

Signal Definitions
2.3.11
2.3.12
AMD Geode™ NX Processors Data Book
Signal Name
Key Pins
AMD Pin
Analog Pin
NC Pins
Signal Name
V
V
V
ZN
ZP
CCA
CC_CORE
SS
Key Pin, AMD Pin, Analog Pin and No Connect Pins
Power, Ground and Compensation Circuit Connections
See Table
See Table
See Table
See Table
page 23
page 23
page 23
page 23
Pin No.
Pin No.
2-2 on
2-2 on
2-2 on
2-2 on
AJ13
AJ23
AH6
AC5
AE5
Port
Port
--
--
--
--
--
--
--
--
--
Description
Key Pins (Total of 16). These 16 locations are for processor type
keying for forwards and backwards compatibility. Circuit board
designers should treat Key Pins like NC (no connect) Pins. See the
NC Pins signal description for more information. A socket designer
has the option of creating a top mold piece that allows PGA Key
Pins only where designated. However, sockets that populate all 16
Key Pins must be allowed, so the circuit board must always provide
for pins at all Key Pin locations.
AMD Pin. AMD Socket A processors do not implement a pin at
location AH6. All Socket A designs must have a top plate or cover
that blocks this pin location. When the cover plate blocks this loca-
tion, a non-AMD part (e.g., PGA370) does not fit into the socket.
However, socket manufacturers are allowed to have a contact
loaded in the AH6 position. Therefore, circuit board socket design
should account for the possibility that a contact could be loaded in
this position.
The circuit board should treat the AMD Pin (AH6) as an NC Pin. A
socket designer has the option of creating a top mold piece that
blocks this pin location. However, sockets that populate the AMD
pin must be allowed, so the circuit board must always provide for a
NC type pin at this pin location. AMD Socket A processors do not
implement a pin at location AH6. When a socket that does not pro-
vide a pin hole at location AH6 is used, a non-AMD PGA370 part
does not fit into Socket A.
Analog Pin. Treat this pin as a NC.
No Connection Pins (Total of 71). The circuit board should pro-
vide a plated hole for an NC pin. The pin hole should not be electri-
cally connected to anything.
Description
Power Connection A. V
mation about the V
teristics" on page 47 and the AMD Athlon™ Processor-Based
Motherboard Design Guide (publication ID 24363).
Power Connection (Total of 101).
Ground Connection (Total of 101).
Z Negative and Positive. These are the push-pull compensation
circuit pins. In Push-Pull mode (selected by the SIP (Serial Initializa-
tion Packet) parameter SysPushPull asserted), ZN is tied to
V
ance Z
has a resistance matching the impedance Z
line.
CC_CORE
0
of the transmission line. ZP is tied to V
with a resistor that has a resistance matching the imped-
CCA
pin, see Table 5-2 "V
CCA
is the processor PLL supply. For infor-
31177H
0
CCA
of the transmission
SS
Electrical Charac-
with a resistor that
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