Uart_Clk; Siu0_Rxd; Siu1_Rxd; Siu0_Txd - Intel 6300ESB Datasheet

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4—Intel 6300ESB ICH
Table 28. Power Plane and States for Output and I/O Signal for Desktop
Configurations (Sheet 7 of 7)
Signal Name
GPIO[43:37]
GPIO[57:56]

UART_CLK

SIU0_RXD

SIU1_RXD

SIU0_TXD

SIU1_TXD

SIU0_CTS#

SIU1_CTS#

SIU0_DSR#
SIU1_DSR#
SIU0_DCD#
SIU1_DCD#
SIU0_RI#
SIU1_RI#
SIU0_DTR#
SIU1_DTR#
SIU0_RTS#
SIU1_RTS#
NOTES:
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1. The Intel 6300ESB ICH sets these signals at reset for CPU frequency strap.
2. The states of main I/O signals are taken at the times during PXPCIRST# and immediately after PXPCIRST#.
3. The states of resume I/O signals are taken at the times during RSMRST# and immediately after RSMRST#
4. GPIO[0:7], GPIO[16:21, 23], and GPIO[32:55] are in the core well.
5. GPIO[8:15] and GPIO[24:31] are in the suspend well.
6. Core-well GPIO are 5 V tolerant, except for GPIO[7:6] and [32:43].
7. Resume-well GPIO are not 5 V tolerant.
8. GPIO[56:57] pads are in the suspend well, the register bits are in the RTC well.
9. PXIRQ[3:0] are input only, GPIO[36:33] are I/O in GPIO mode
10.PIRQ[H:E] are I/OD, GPIO[5:2] are input only.
Table 29
device drives the signal at various times. Valid states include:
•
High
•
Low
•
Static: Will be high or low, but will not change
•
Driven: Will be high or low, and is allowed to change
•
Running: For input clocks
November 2007
Order Number: 300641-004US
Power
Type
Well
I/O Core
RTC/
OD
Suspend
SIU Interface
I Core
I Core
I/O Core Internal Pull-Up (15K - 35K)
I/O Core
I/O Core Internal Pull-Up (15K - 35K)
I Core
I/O Core Internal Pull-Up (15K - 35K)
I Core
I/O Core Internal Pull-Up (15K - 35K)
I Core
I/O Core Internal Pull-Up (15K - 35K)
I Core
I/O Core Internal Pull-Up (15K - 35K)
O Core Internal Pull-Up (15K - 35K)
I/O Core Internal Pull-Up (15K - 35K)
O Core
I/O Core Internal Pull-Up (15K - 35K)
shows the power plane associated with each input signal, as well as what
During Reset
Resistors
None
External pull up Driven (0 or 1)
None
None
None
None
None
None
None
None
After Reset
(Note 2) (Note 2)
0 0 until driven
Driven (0 or 1)
Input Only Input Only
Input Only Input Only
H H
1 1
H 1
Input Only Input Only
H H
Input Only Input Only
H H
Input Only Input Only
H H
Input Only Input Only
H H
1 1
H 1
1 1
H 1
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Intel 6300ESB I/O Controller Hub
DS
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