Datasheet

Intel
®
82845G/82845GL/82845GV GMCH Datasheet 149
Electrical Characteristics
Hub Interface Signal Groups
(e)
Hub Interface
CMOS I/O
HI_[10:0], HISTBS, HISTBF
(f)
Hub Interface
Miscellaneous
HI_SWING, HI_VREF, HI_RCOMP
Host Interface Signal Groups
(g) AGTL+ I/O
ADS#, BNR#, DBSY#, DINV_[3:0]#, DRDY#, HA_[31:3]#, HADSTB_[1:0]
#, HD_[63:0]#,HDSTBP_[3:0]#, HDSTBN_[3:0]#, HIT#, HITM#,
HREQ_[4:0]#
(h) AGTL+ Input HLOCK#
(i) AGTL+ Output BPRI#, BREQ0#, CPURST#, DEFER#, HTRDY#, RS_[2:0]#
(j) Host Clock Input HCLKP, HCLKN
(k) Host Miscellaneous
HDVREF_[2:0], HA_VREF, HCC_VREF, HX_RCOMP, HY_RCOMP,
HX_SWING, HY_SWING
DDR Interface Signal Groups
(l) DDR SSTL_2 I/O SDQ_[63:0], SDQS_[7:0]
(m) DDR SSTL_2 Output
SDM_[7:0], SCMDCLK_[5:0], SCMDCLK_[5:0]#, SMAA_[12:0],
SMAB_[5,4,2,1], SBA_[1:0], SRAS#, SCAS#, SWE#, SCS_[3:0]#,
SCKE_[3:0], SRCVEN_OUT#
(n) DDR SSTL_2 Input SRCVEN_IN#
(o) DDR Miscellaneous SMXRCOMP, SMYRCOMP, SM_VREF
SDR Interface Signal Groups
(p) SDRAM LVTTL I/O SDQ_[63:0]
(q) SDRAM LVTTL Output
SDM_[7:0], SMAA_[12:0], SBA_[1:0], SRAS#, SCAS#, SWE#, SCS[7:0]#,
SCK_[7:0], SCKE_[3:0], SRDCLK_OUT
(r) SDRAM LVTTL Input SRDCLK_IN
(s)
SDRAM Miscella-
neous
SMXRCOMP, SMYRCOMP, SM_VREF
DAC Signal Groups
(t) Display LVTTL Output VSYNC, HSYNC
(u)
Display Analog
Outputs
RED, GREEN, BLUE, RED#, GREEN#, BLUE#
(v) Display Miscellaneous REFSET
Intel
®
DVO Signal Groups
(w) DVOx Input DVOBC_CLKINT, DVOx_FLD/STL, DVOBC_INTR#
(x) DVOx Output
DVOx_CLK, DVOx_CLK#, DVOx_D[11:0], DVOx_HSYNC,
DVOx_VSYNC, DVOx_BLANK#
Reset and Miscellaneous Signal Groups
(y) CMOS I/O GCLKIN, RSTIN#, PWROK, DREFCLK, DDCA_CLK, DDCA_DATA
Table 6-4. Signal Groups (Sheet 2 of 2)
Signal
Group
Signal Type Signals