Intel® 500 Series Chipset Family On-Package PCH Datasheet Volume 1

Datasheet

ID 631119
Date 13/07/2021 00:00:00
Public Content
Document Table of Contents

I/O Signal Planes and States

Signal Name

Power Plane

During Reset18

Immediately after Reset18

S4/S5

Deep Sx

ACPRESENT 6,10,15

DSW

Undriven /Driven Low4

Undriven

Undriven

Undriven/Internal Pull-down8

BATLOW#

DSW

Undriven

Undriven

Undriven

OFF

CORE_​VID0 11,17

Primary

Driven High

Driven High

Driven High

OFF

CORE_​VID1 11,17

Primary

Driven High

Driven High

Driven High

OFF

CPU_​C10_​GATE# 1,17

Primary

Undriven 19

Undriven 19

Driven Low

OFF

DRAM_​RESET# 14

DSW

Undriven

Undriven

Undriven

Undriven

DSW_​PWROK

RTC

Undriven

Undriven

Undriven

Undriven

SPIVCCIOSEL

DSW

Undriven

Undriven

Undriven

Undriven

LAN_​WAKE# 15

DSW

Undriven

Undriven

Undriven

Undriven/Internal Pull-down8

LANPHYPC 10,16

DSW

Undriven

Undriven

Undriven7

Undriven7

PCH_​PWROK

RTC

Undriven

Undriven

Undriven

Undriven

PLTRST# 16

Primary

Driven Low

Driven High

Driven Low

OFF

PWRBTN# 15

DSW

Internal

Pull-up

Internal

Pull-up

Internal

Pull-up

Internal

Pull-up

RSMRST#

RTC

Undriven

Undriven

Undriven

Undriven

SLP_​A# 6,16

DSW

Driven Low

Driven High

Driven High/Driven Low12

Driven High/Driven Low12

SLP_​S0# 1

Primary

Driven High

Driven High

Driven High

OFF

SLP_​S3# 6,16

DSW

Driven Low

Driven High

Driven Low

Driven Low

SLP_​S4# 6,16

DSW

Driven Low

Driven High

Driven Low

Driven Low9

SLP_​S5# 6,16

DSW

Driven Low

Driven High

Driven High/Driven Low3

Driven High/Driven Low9

SLP_​SUS# 6,14

DSW

Driven Low

Driven High

Driven High

Driven Low

SLP_​WLAN# 6,16

DSW

Driven Low

Driven Low

Driven High/Driven Low7

Driven High/Driven Low7

SUSACK# 15

Primary

Internal

Pull-up

Internal

Pull-up

Internal

Pull-up

OFF

SUSCLK 10,16

DSW

Driven Low

Toggling

Toggling

Toggling10

SUSWARN# / SUSPWRDNACK 10,16

Primary

Driven Low

Driven Low

Driven Low5

OFF

SX_​EXIT_​HOLDOFF# 15

Primary

Undriven

Undriven

Undriven

OFF

SYS_​PWROK

Primary

Undriven

Undriven

Undriven

OFF

SYS_​RESET#

Primary

Undriven

Undriven

Undriven

OFF

VRALERT# 15

Primary

Undriven

Undriven

Undriven

OFF

WAKE# 13

DSW

Undriven

Undriven

Undriven

Undriven/Internal Pull-down

Notes:
  1. Driven High during S0 and driven Low during S0i3 when all criteria for assertion are met.
  2. SLP_​S4# is driven low in S4/S5.
  3. SLP_​S5# is driven high in S4, driven low in S5.
  4. In non-Deep Sx mode, pin is driven low.
  5. Based on wake events and Intel® CSME state. SUSPWRDNACK is always ‘0’ while in M0 or M3, but can be driven to ‘0’ or ‘1’ while in Moff state. SUSPWRDNACK is the default mode of operation. If Deep Sx is supported, then subsequent boots will default to SUSWARN#.
  6. The pin requires glitch-free output sequence. The pad should only be pulled low momentarily when the corresponding buffer power supply is not stable.
  7. Based on wake event and Intel CSME state.
  8. Pull-down is configurable and can be enabled in Deep Sx state; refer to DSX_​CFG register for more details.
  9. When platform enters Deep Sx, the SLP_​S4# and SLP_​S5# pin will retain the value it held prior to Deep Sx entry.
  10. Internal weak pull-down resistor is enabled during power sequencing.
  11. The CORE_​VID pins defaults to ‘1’ and will be driven to ‘1’ to reflect that voltage will support 1.8 V. The VID able to change to 1.8 V/ 3.3 V based on the CPU and the state.
  12. Pin state is a function of whether the platform is configured to have Intel CSME on or off in Sx.
  13. Output High-Z, not glitch free.
  14. Output High-Z, glitch free with ~1 kohm Pull-down during respective power sequencing
  15. Output High-Z, not glitch free.
  16. Output High-Z, glitch free with ~20 kohm Pull-down during respective power sequencing.
  17. Output High-Z, glitch free with ~20 kohm Pull-up during respective power sequencing.
  18. Reset reference for primary well pins is RSMRST#, DSW well pins is DSW_​PWROK, and RTC well pins is RTCRST#.
  19. Sx can be optionally be high when RSMRST# is high and the buffer moves to its native mode at which point it will become low.