Intel® Core™ Processor (Series 3)

Formerly known as Wildcat Lake, Datasheet, Volume 1 of 2

ID Date Version Classification
913965 05/19/2026 001 Public
Document Table of Contents
RFM

Signal Description

Signal Name

Type

Description

GPP_​B02/ISH_​I2C0_​SDA/ISH_​I3C0_​SDA/I2C2A_​SDA

I/OD

ISH I2C 0 Data

ISH I3C 0 Data

GPP_​B03/ISH_​I2C0_​SCL/ISH_​I3C0_​SCL/I2C2A_​SCL

I/OD

ISH I2C 0 Clk

ISH I3C 0 Clk

GPP_​H14/ISH_​UART1_​RXD/UART1A_​RXD/ISH_​I2C1_​SDA/ISH_​I3C1_​SDA

I/OD

ISH UART1 Receive Data

ISH I2C 1 Data

ISH I3C 1 Data

GPP_​H15/ISH_​UART1_​TXD/UART1A_​TXD/ISH_​I2C1_​SCL/ISH_​I3C1_​SCL

I/OD

ISH UART1 Transmit Data

ISH I2C 1 Clk

ISH I3C 1 Clk

GPP_​B18/ISH_​I2C2_​SDA/I2C4A_​SDA

I/OD

ISH I2C 2 Data

GPP_​B19/ISH_​I2C2_​SCL/I2C4A_​SCL

I/OD

ISH I2C 2 Clk

GPP_​D01/I2C3A_​SDA/ISH_​I2C2A_​SDA I/OD

ISH I2C 2A Data

GPP_​D02/I2C3A_​SCL/ISH_​I2C2A_​SCL I/OD

ISH I2C 2A Clk

GPP_​B04/BK0/SBK0/ISH_​GP0

I/O

ISH GPIO 0

GPP_​B05/BK1/SBK1/ISH_​GP1

I/O

ISH GPIO 1

GPP_​B06/BK2/SBK2/ISH_​GP2

I/O

ISH GPIO 2

GPP_​B07/BK3/SBK3/ISH_​GP3

I/O

ISH GPIO 3

GPP_​B08/BK4/SBK4/ISH_​GP4

I/O

ISH GPIO 4

GPP_​B22/TIME_​SYNC0/ISH_​GP5

I/O

ISH GPIO 5

GPP_​B23/TIME_​SYNC1/ISH_​GP6

I/O

ISH GPIO 6

GPP_​E05/ISH_​GP7

I/O

ISH GPIO 7

GPP_​B20/I2C5A_​SDA/ISH_​GP8

I/O

ISH GPIO 8
GPP_​B21/I2C5A_​SCL/ISH_​GP9

I/O

ISH GPIO 9
GPP_​E02/PROC_​GP3/VRALERT#/ISH_​GP10

I/O

ISH GPIO 10
GPP_​F09/SX_​EXIT_​HOLDOFF#/ISH_​GP11

I/O

ISH GPIO 11
GPP_​E01/PROC_​GP2/RSVD/ISH_​GP5A

I/O

ISH GPIO 5A
GPP_​F10/ISH_​GP6A

I/O

ISH GPIO 6A
GPP_​F22/THC1_​DSYNC/ISH_​GP8A

I/O

ISH GPIO 8A
GPP_​F23/ISH_​GP9A

I/O

ISH GPIO 9A
GPP_​H10/UART0_​RTS#/I3C1A_​SDA/ISH_​GP10A I/O ISH GPIO 10A
GPP_​H11/UART0_​CTS#/I3C1A_​SCL/ISH_​GP11A I/O ISH GPIO 11A
GPP_​D06/ISH_​UART0_​TXD/ISH_​SPI_​CLK/SML0BCLK

O

ISH UART 0 Transmit Data

ISH SPI Clock

GPP_​D05/ISH_​UART0_​RXD/ISH_​SPI_​CS#/SML0BDATA

I

ISH UART 0 Receive Data

ISH SPI Chip Select

GPP_​D07/ISH_​UART0_​RTS#/ISH_​SPI_​MISO

O

ISH UART 0 Request To Send

ISH SPI MISO

GPP_​D08/ISH_​UART0_​CTS#/ISH_​SPI_​MOSI/SML0BALERT#

I

ISH UART 0 Clear to Send

ISH SPI MOSI

GPP_​H07/I2C3_​SCL/UART1_​TXD/ISH_​UART1A_​TXD

O

ISH UART 1A Transmit Data

GPP_​H06/I2C3_​SDA/UART1_​RXD/ISH_​UART1A_​RXD

I

ISH UART 1A Receive Data

GPP_​F17/THC1_​SPI2_​CS#/ISH_​SPIA_​CS#/GSPI1_​CS0# O ISH SPIA Chip Select
GPP_​F11/THC1_​SPI2_​CLK/ISH_​SPIA_​CLK/GSPI1_​CLK O ISH SPIA Clock
GPP_​F12/THC_​I2C1_​SCL/I3C2_​SCL/THC1_​SPI2_​IO0/ISH_​SPIA_​MISO/GSPI1_​MOSI/I2C5_​SCL I ISH SPIA MISO
GPP_​F13/THC_​I2C1_​SDA/I3C2_​SDA/THC1_​SPI2_​IO1/ISH_​SPIA_​MOSI/GSPI1_​MISO/I2C5_​SDA O ISH SPIA MOSI