AM4 Pinout

am4-pinout

Signal Description
MA/MB_ACT_L DRAM Channel A/B Activation Command
MA/MB_ADD[13:0] DRAM Column/Row Address
MA/MB_ADD_17 DRAM Column/Row Address 17
MA/MB_ALERT_L DRAM Alert (CRC error and Command/Address parity error)
MA/MB_BANK[1:0] DRAM Bank Address
MA/MB_BG[1:0] DRAM Bank Group
MA/MB_CAS_L_ADD[15] DRAM Column Address Strobe or Column/Row Address 15
MA/MB_CHECK[7:0] DRAM ECC Check Bits
MA/MB_DATA[63:0] DRAM Data Bus
MA/MB_DM[8:0] DRAM Data Mask
MA/MB_DQS_H/L[8:0] DRAM Differential Data Strobe
MA/MB_EVENT_L DRAM Thermal Event Status
MA/MB_PAROUT DRAM Command/Address Parity
MA/MB_RAS_L_ADD[16] DRAM Row Address Strobe or Column/Row Address 16
MA/MB_RESET_L DRAM Reset
MA/MB_WE_L_ADD[14] DRAM Write Enable or Column/Row Address 14
MA/MB_ZVDDIO_MEM_S3
MA/MB_ZVSS DRAM Interface Drive-Strength Auto-Compensation Resistor to VSS
MA0/MA1/MB0/MB1_CKE[1:0] DRAM Channel A/B DIMM 0/1 Clock Enable
MA0/MA1/MB0/MB1_CLK_H/L[3:0] DRAM Channel A/B DIMM 0/1 Differential Clock
MA0/MA1/MB0/MB1_CS_L[1:0] DRAM Channel A/B DIMM 0/1 Chip Select
MA0/MA1/MB0/MB1_ODT[1:0] DRAM Channel A/B DIMM 0/1 Enable Pin for On Die Termination
P_GFX_RXP/RXN[15:0] PCIe GFX Receive Data Differential Pairs
P_GFX_TXP/TXN[15:0] PCIe GFX Transmit Data Differential Pairs
P_GPP_RXP/RXN[3:0] PCIe GPP Receive Data Differential Pairs
P_GPP_TXP/RXN[3:0] PCIe GPP Transmit Data Differential Pairs
P_HUB_RXP/RXN[3:0] PCIe Hub (chipset) Receive Data Differential Pairs
P_HUB_TXP/TXN[3:0] PCIe Hub Transmit Data Differential Pairs
PCIE_RST_L Reset signal for PCIe devices
P_ZVDDP
P_ZVSS
P0A/P0B_ZVSS PCIe Drive-Strength Auto-Compensation Resistor to VSS
SATA_RX(0-1)P/N SATA Receive Data Differential Pairs (alt. func. of P_GPP[2], P_GPP[3])
SATA_TX(0-1)P/N SATA Transmit Data Differential Pairs
SATA_ACT_L SATA Channel Active (HD LED
SGPIO0_CLK SGPIO Interface CLK Output; SGPIO supported on Socket AM4?
SGPIO0_DATAIN SGPIO DATA Input
SGPIO0_DATAOUT SGPIO DATA Output
SGPIO0_LOAD SGPIO LOAD Output
SATA_IS(0-1)_L
SATA_ZP(0-1)_L Zero Power SATA ODD
SATA_ZVDDP
SATA_ZVSS
DP0-DP2_TXP/TXN[3:0] DisplayPort 0-2 Main Link Differential Transmitter Lane 0-3
DP0-DP2_AUXP/AUXN DisplayPort 0-2 Auxiliary Channel
DP0-DP2_HPD DisplayPort 0-2 Hot Plug Detect Input
DP_BLON Display Panel Backlight Enable
DP_DIGON Display Panel Power Enable
DP_VARY_BL Display Backlight Brightness Control
DP_STEREOSYNC StereoSync output for shutter glasses
DP_AUX_ZVSS
DP_ZVSS
USB_HSD(0-3)P/N USB Port 0-3 High Speed I/O Differential Pairs
USB_SS_(0-3)RXP/RXN USB Port 0-3 Super Speed Receive Differential Pairs
USB_SS_(0-3)TXP/TXN USB Port 0-3 Super Speed Transmit Differential Pairs
USB_OC(0-3)_L USB Port 0-3 Over Current signal from USB connector
USB_SS_ZVDDP
USB_SS_ZVSS
USB_ZVSS
USB(0-3)_ZVSS USB Port 0-3 Drive-Strength Auto-Compensation Resistor to VSS
AZ_BITCLK Azalia HD Audio Interface Bit Clock
AZ_RST_L HDA Reset
AZ_SDIN(0-2) HDA Serial Data Input from Codec 0-2
AZ_SDOUT HDA Serial Data Output to Codec
AZ_SYNC HDA Sync Signal to Codec
SPKR PC speaker/beeper PWM output
SPI_CLK SPI Clock
SPI_DO SPI Data Out or Data 0 for multi-I/O SPI/eSPI device
SPI_DI SPI Data In or Data 1
SPI_WP_L SPI Write Protect or Data 2
SPI_HOLD_L SPI Hold Signal (asserted low to hold the SPI transaction) or Data 3
SPI_TPM_CS_L SPI Chip Select for TPM
SPI_CS1/CS2_L SPI Chip Select
ESPI_CLK ESPI Clock (alt. func. of SPI_CLK)
ESPI_DAT(0-3) ESPI Data[0], Data[1:0], Data[3:0] (alt. func. of SPI_DO/DI/WP_L/HOLD_L)
ESPI_CS_L ESPI Chip Select (SPI_CS2_L)
ESPI_ALERT_L ESPI Alert Input (LDRQ0_L)
ESPI_RESET_L ESPI Reset (KBRST_L)
LAD(0-3) LPC Command/Address/Data
LDRQ0_L Encoded DMA/Bus Master Request 0
LFRAME_L LPC Bus Frame
LPCCLK(0-1) LPC 33 MHz Clock
LPC_CLKRUN_L LPC CLKRUN Signal
LPC_PD_L LPC Power Down
LPC_PME_L LPC Power Management Event
LPC_RST_L LPC Reset
SERIRQ Serial IRQ for DMA
I2C(2-3)_SCL I2C Port 2-3 Clock
I2C(2-3)_SDA I2C Port 2-3 Data
SCL0 SMBus Port 0 Clock (alt. func. of I2C2)
SDA0 SMBus Port 0 Data
SCL1 SMBus Port 1 Clock (alt. func. of I2C3)
SDA1 SMBus Port 1 Data
AGPIO* Advanced GPIO pin for interrupt, wake, or I/O
EGPIO* Enhanced GPIO for I/O only
GENINT(1-2)_L Generic Interrupt Request
GFX_CLKP/N PCIe GFX 100 MHz Differential Reference Clock
GPP_CLK0(0-3)P/N PCIe GPP 100 MHz Differential Reference Clock
CLK_REQG_L PCIe GFX Clock Request
CLK_REQ(0-3)_L PCIe GPP Clock Request
OSCIN 14 MHz Clock Input
X32K_X1/X2 32768 Hz Clock XTAL for the integrated RTC
X48M_X1/X2 48 MHz Clock XTAL for the integrated clock generator
RTCCLK 32768 Hz Real Time Clock output, for a device requiring an RTC clock
X48M_OSC 48 MHz clock output for devices requiring a single-ended OSC input
KBRST_L Keyboard Controller Reset Input (warm reset)
PWR_BTN_L Power Button; Requests sleep state or causes wake event
PWR_GOOD Power Good Input; Asserted when all voltages and clock inputs are within specification
PWROK Power OK; Asserted by the processor after all power planes are active, the system clock generators are powered up and run stably
RESET_L Bidirectional signal that resets the processor when asserted; Normally controlled by an internal state machine but can also be asserted by a second external source
RSMRST_L Resume Reset from motherboard; Asserted on power up, deasserted when S5 power supplies are within specification
S0A3_GPIO S0A3 Indicator
SLP_S3/S5_L S3/S5 Sleep State Power Plane Control Signal
SYS_RESET_L System Reset Input (reset button)
WAKE_L PCIe WAKE_L signal, wake system out of sleep state
BLINK Blink LED S-state Indicator
FANIN0 Fan tachometer input
FANOUT0 Fan PWM output
ALERT_L Programmable pin that can indicate different events, including a SB-TSI interrupt
PROCHOT_L Asserted to force the processor into HTC-active state
SIC Sideband Interface (SB-TSI) Clock
SID Sideband Interface Data
THERMTRIP_L Temperature Trip Input/Output
DBREQ_L Debug Request input to JTAG controller
DBRDY
TCK JTAG Clock
TDI JTAG Data Input
TDO JTAG Data Output
TMS JTAG Mode Select
TRST_L JTAG Reset
TEST* Test Pins
SVC Serial VID Interface Clock
SVD Serial VID Interface Data
SVT Serial VID Interface Telemetry
VDDIO_AUDIO Azalia HD Audio power supply
VDDBT_RTC_G Integrated Real Time Clock battery power supply
VDDCR_CPU Core power supply
VDDCR_CPU_SENSE VDDCR_CPU voltage monitor pin
VDDCR_SOC Supply voltage for the Northbridge
VDDCR_SOC_SENSE VDDCR_SOC voltage monitor pin
VDDCR_SOC_S5 Always on SOC power supply
VDDIO_MEM_S3 1.2 V DRAM supply voltage
VDDIO_MEM_S3_SENSE VDDIO_MEM_S3 voltage monitor pin
VDDP
VDDP_SENSE VDDP voltage monitor pin
VDDP_S5
VDD_18 1.8 V supply voltage
VDD_18_S5 Always on 1.8 V supply voltage
VDD_33 3.3 V supply voltage
VDD_33_S5 Always on 3.3 V supply voltage
VSS Ground
VSS_SENSE_A VSS sense pin for voltage regulator
VSS_SENSE_B VSS sense pin for voltage regulator
CORETYPE[1:0] Processor Core Type Indicator
AM4R1 Processor Family Revision Identifier
RSVD Reserved

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