Electrical Specifications
Table 4. System Bus Pin Groups
Signal Group
Type
Signals1
Common
clock
AGTL+ Common Clock Input
AGTL+ Common Clock I/O
BPRI#, DEFER#, RESET#2, RS[2:0]#, RSP#, TRDY#
AP[1:0]#, ADS#, BINIT#, BNR#, BPM[5:0]#2, BR0#2,
DBSY#, DP[3:0]#, DRDY#, HIT#, HITM#, LOCK#,
MCERR#
Synchronous
Signals
Associated Strobe
REQ[4:0]#, A[16:3]#5 ADSTB0#
A[35:17]#5
ADSTB1#
AGTL+ Source Synchronous
I/O
Source
Synchronous
D[15:0]#, DBI0#
D[31:16]#, DBI1#
D[47:32]#, DBI2#
D[63:48]#, DBI3#
DSTBP0#, DSTBN0#
DSTBP1#, DSTBN1#
DSTBP2#, DSTBN2#
DSTBP3#, DSTBN3#
Common
Clock
AGTL+ Strobes
ADSTB[1:0]#, DSTBP[3:0]#, DSTBN[3:0]#
A20M#, DPSLP#, GHI#, IGNNE#, INIT#5, LINT0/INTR,
LINT1/NMI, SMI#5, SLP#, STPCLK#
Asynchronous GTL+ Input4,5
Asynchronous GTL+ Output4
TAP Input4
Asynchronous
Asynchronous FERR#/PBE#, IERR#2, THERMTRIP#, PROCHOT#
Synchronous
TCK, TDI, TMS, TRST#
to TCK
Synchronous
TDO
TAP Output4
to TCK
System Bus Clock
N/A
BCLK[1:0], ITP_CLK[1:0]3
VCC, VCCA, VCCIOPLL, VCCVID, VID[4:0], VSS, VSSA
GTLREF[3:0], COMP[1:0], NC, TESTHI[5:0],
TESTHI[10:8], ITPCLKOUT[1:0], PWRGOOD,
,
Power/Other
N/A
THERMDA, THERMDC, SKTOCC#, VCC_SENSE
V
,
SS_SENSE, BSEL[1:0], DBR#3
NOTES:
1. Refer to Section 5.2 for signal descriptions.
2. These AGTL+ signals do not have on-die termination. Refer to Section 2.5 for termination requirements.
3. In processor systems where there is no debug port implemented on the system board, these signals are used
to support a debug port interposer. In systems with the debug port implemented on the system board, these
signals are no connects.
4. These signal groups are not terminated by the processor. Signals not driven by the ICH3-M component must
be terminated on the system board. Refer to Section 2.5 and the Mobile Intel Pentium 4 Processor-M and
Intel 845MP/845MZ Chipset Platform Design Guide for termination requirements and further details.
5. The value of these pins during the active-to-inactive edge of RESET# defines the processor configuration
options. See Section 7.1 for details.
Mobile Intel Pentium 4 Processor-M Datasheet
21
INTEL [ INTEL ]
