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Socket FM1
General Info
Designer	AMD
Introduction	June 30, 2011 (launched)
Market	Desktop
Microarchitecture	K10
TDP	100 W 100,000 mW 0.134 hp 0.1 kW
Package
Name	OPGA-905
Type	Organic Micro Pin Grid Array
Contacts	905
Dimension	40.0 mm 4 cm 1.575 in × 40.0 mm 4 cm 1.575 in
Pitch	1.27 mm 0.05 in
Socket
Name	Socket FM1
Type	PGA

Socket FM1 was the socket for OPGA-905-packaged AMD microprocessors, the first generation of AMD APUs, desktop processors with integrated graphics. Its counterpart for mobile processors is Socket FS1. Socket FM1 was superseded by Socket FM2.

All processors for Socket FM1, codename "Llano", belong to AMD's Family 12h based on the K10 microarchitecture, and were fabricated in a 32 nm SOI process.

Features

• 905-pin lidded micro pin grid array package, 1.27 mm pitch, 31 × 31 pins, 40 × 40 mm, organic substrate
• PCIe Gen 1.0 and 2.0
  • Configurable x8 or x16 external discrete graphics card
  • Configurable x4 General Purpose Ports link
  • x4 Unified Media Interface link
• 2 × 64/72 bit DDR3 SDRAM interface up to 933 MHz, PC3-14900 (DDR3-1866), 29.9 Gbyte/s
  • Up to 4 UDIMMs or SODIMMs (2 per channel), up to 16 Gbyte per UDIMM, SEC-DED ECC
  • JEDEC 1.35V, 1.5V
• Single/dual-link DVI, HDMI 1.4a, DisplayPort 1.1a / eDP, HDCP, two display controllers
• P-States, ACPI C0, C1, S0, S3, S4, S5, per core power gating, AMD PowerNow! technology
• Northbridge P-states, PCIe core power gating, power-down for unused lanes
• Sideband temperature control, hardware thermal control (HTC), local HTC, DRAM thermal protection

Chipsets

• AMD A55/A75 "Hudson-D2/D3"

Processors using Socket FM1

• AMD A-Series APU
• AMD E2-Series APU
• AMD Athlon II X2, X4
• AMD Sempron X2

	List of all Socket FM1-based Processors
Model	Price	Process	Launched	µarch	Family	Core	C	T	Freq	Turbo	TDP
Count: 0

Package Diagram

OPGA-905 package. All dimensions in millimeters.

Socket Outline

Socket FM1. All dimensions in millimeters.

Pin Map

Pin Description

Signal	Description
ALERT_L	Programmable pin that can indicate different events, including a SB-TSI interrupt
CLKIN_H/L	Differential PLL Reference Clock
DBREQ_L, DBRDY	Debug Request/Ready
DISP_CLKIN_H/L	Display Controller Reference Clock
DMAACTIVE_L	Indicates System DMA Activity to prevent NB P-state transition
DP0/DP1/DP2/DP3/DP4/DP5_AUXP/N	DisplayPort Auxiliary Channel
DP0/DP1/DP2/DP3/DP4/DP5_HPD	DisplayPort Hot Plug Detect
DP0/DP1_TXP/N[3:0]	DisplayPort Differential Transmitter
DP_AUX_ZVSS	Compensation Resistor to VSS
DP_BLON	Display Panel Backlight Enable
DP_DIGON	Display Panel Power Enable
DP_VARY_BL	Display Backlight Brightness Control
FM1R1
MA0/MA1/MB0/MB1_CS_L[1:0]	DRAM Chip Select
MA0/MA1/MB0/MB1_ODT[1:0]	DRAM Enable Pin for On Die Termination
MA/MB_ADD[15:0]	DRAM Column/Row Address
MA/MB_BANK[2:0]	DRAM Bank Address
MA/MB_CAS_L	DRAM Column Address Strobe
MA/MB_CHECK[7:0]	DRAM ECC Bits
MA/MB_CKE[1:0]	DRAM Clock Enable
MA/MB_CLK_H/L[7:0]	DRAM Differential Clock
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_RAS_L	DRAM Row Address Strobe
MA/MB_RESET_L	DRAM Reset Pin for Suspend-to-RAM Power Management Mode
MA/MB_WE_L	DRAM Write Enable
M_VREF	DRAM Interface Voltage Reference
M_ZVDDIO	Compensation Resistor to VDDIO
PROCHOT_L	Processor in HTC-active state
PWROK	Voltages and CLKIN have reached specified operation
P_GFX_TX/RXP/N[15:0]	GFX Ports PCIe Transmit/Receive Data Differential Pairs. Lanes of the GFX ports can be assigned to I/O links (one x16 or two x8 or x4) or DDI links.
P_GPP_TX/RXP/N[3:0]	General Purpose Ports PCIe Transmit/Receive Data Differential Pairs (one to four links x4, x2, x1)
P_UMI_TX/RXP/N[3:0]	Unified Media Interface Transmit/Receive Data Differential Pairs
P_ZVDDP	Compensation Resistor to VDDP Power Supply
P_ZVSS	Compensation Resistor to VSS
RESET_L	Processor Reset
RSVD	Reserved
SIC, SID	Sideband Temperature Sensor Interface Clock/Data
SVC, SVD	Serial VID Interface Clock/Data
TCK, TDI, TDO, TMS, TRST_L	JTAG Interface
TEST*	Test signal
THERMDA, THERMDC	Thermal Diode Anode, Cathode
THERMTRIP_L	Thermal Sensor Trip output
VDD	Core Power Supply
VDD_SENSE	VDD Voltage Monitor Pin
VDDA	Filtered PLL Supply Voltage
VDDIO	DRAM I/O Ring Power Supply
VDDIO_SENSE	VDDIO Voltage Monitor Pin
VDDNB	Northbridge Power Supply
VDDNB_CAP_1
VDDNB_CAP_2
VDDNB_SENSE	VDDIO Voltage Monitor Pin
VDDP_A/B
VDDP_SENSE	VDDP Voltage Monitor Pin
VDDR	VDDR Power Supply
VDDR_SENSE	VDDR Voltage Monitor Pin
VSS	Ground
VSS_SENSE	VSS Voltage Monitor Pin

References

• "Socket FM1 Design Specification", AMD Publ. #47610, Rev. 3.00, August 2011
• "BIOS and Kernel Developer’s Guide (BKDG) For AMD Family 12h Processors", AMD Publ. #41131, Rev. 3.02, October 6, 2011
• "Family 12h AMD A-Series Accelerated Processor Product Data Sheet", AMD Publ. #49894, Rev. 3.01, October 2011
• "Family 12h AMD Athlon™ II Processor Product Data Sheet", AMD Publ. #50322, Rev. 3.00, December 2011
• "Family 12h AMD Sempron™ Processor Product Data Sheet", AMD Publ. #50321, Rev. 3.00, December 2011
• "Revision Guide for AMD Family 12h Processors", AMD Publ. #44739, Rev. 3.10, October 2011

See also

• Socket FS1
• Socket FM2