82801FB Datasheet, PDF (79/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

3 Pin States
Pin States
3.1
Integrated Pull-Ups and Pull-Downs
Table 3-1. Integrated Pull-Up and Pull-Down Resistors
Signal
ACZ_BIT_CLK, AC ‘97
ACZ_RST#, AC ‘97
ACZ_SDIN[2:0], AC ‘97
ACZ_SDOUT, AC ‘97
ACZ_SYNC, AC ‘97
ACZ_BIT_CLK, Intel High Definition Audio
ACZ_RST#, Intel High Definition Audio
ACZ_SDIN[2:0], Intel High Definition Audio
ACZ_SDOUT, Intel High Definition Audio
ACZ_SYNC, Intel High Definition Audio
DD[7]
DDREQ
DPRSLPVR / TP[1]
EE_CS
EE_DIN
EE_DOUT
GNT[3:0]
GNT[4]# / GPO[48]
GNT[5]# / GPO[17]
GNT[6]# / GPO[16]
GPIO[25]
LAD[3:0]# / FHW[3:0]#
LAN_RXD[2:0]
LAN_CLK
LDRQ[0]
LDRQ[1] / GPI[41]
PME#
PWRBTN#
SATALED#
SPKR
TP[3]
USB[7:0] [P,N]
Resistor Type
Pull-down
Pull-down
Pull-down
Pull-down
Pull-down
Pull-Down
None
Pull-down
Pull-down
Pull-down
Pull-down
Pull-down
Pull-down
Pull-down
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
Pull-down
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
Pull-down
Pull-up
Pull-down
Nominal Value
20K
20K
20K
20K
20K
20K
N/A
20K
20K
20K
11.5K
11.5K
20K
20K
20K
20K
20K
20K
20K
20K
20K
20K
20K
100K
20K
20K
20K
20K
15K
20K
20K
15K
Notes
1, 2, 3
1, 2, 4
2, 4
2, 4, 5
2, 4, 5
2, 6, 7
2
2, 4
1, 2
2, 4
8
8
4, 9
10, 11
10
10
10, 12
10, 12
10
10
10, 11
10
13
14
10
10
10
10
15
4
16
17
NOTES:
1. The pull-down resistors on ACZ_BIT_CLK (AC ‘97) and ACZ_RST# are enabled when either:
- The LSO bit (bit 3) in the AC ’97 Global Control Register (D30:F2:2C) is set to 1, or
- Both Function 2 and Function 3 of Device 30 are disabled.
Otherwise, the integrated Pull-down resistor is disabled.
2. The AC ‘97/Intel High Definition Audio Link signals may either all be configured to be an AC-Link or an Intel
High Definition Audio Link.
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
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