Datasheet
LPC Interface Bridge Registers (D31:F0)
Intel® Xeon® Processor D-1500 Product Family 253
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
7.1.29 LGMR—LPC I/F Generic Memory Range Register (LPC I/F—
D31:F0)
Offset Address: 98h–9Bh Attribute: R/W
Default Value: 00000000h Size: 32 bits
Power Well: Core
7.1.30 BIOS_SEL1—BIOS Select 1 Register (LPC I/F—D31:F0)
Offset Address: D0h–D3h Attribute: R/W, RO
Default Value: 00112233h Size: 32 bits
4 SMI on USB IRQ Enable (USBSMIEN) — R/W.
0 = Disable
1 = Enable. USB interrupt will cause an SMI event.
3 SMI on Port 64 Writes Enable (64WEN) — R/W.
0 = Disable
1 = Enable. A 1 in bit 11 will cause an SMI event.
2 SMI on Port 64 Reads Enable (64REN) — R/W.
0 = Disable
1 = Enable. A 1 in bit 10 will cause an SMI event.
1 SMI on Port 60 Writes Enable (60WEN) — R/W.
0 = Disable
1 = Enable. A 1 in bit 9 will cause an SMI event.
0 SMI on Port 60 Reads Enable (60REN) — R/W.
0 = Disable
1 = Enable. A 1 in bit 8 will cause an SMI event.
Bit Description
Bit Description
31:16 Memory Address[31:16] — R/W. This field specifies a 64 KB memory block anywhere in the 4 GB
memory space that will be decoded to LPC as standard LPC memory cycle if enabled.
15:1 Reserved
0 LPC Memory Range Decode Enable — R/W. When this bit is set to 1, then the range specified in
bits 31:16 of this register is enabled for decoding to LPC.
Bit Description
31:28 BIOS_F8_IDSEL — RO. IDSEL for two 512-KB BIOS memory ranges and one 128-KB memory
range. This field is fixed at 0000. The IDSEL programmed in this field addresses the following
memory ranges:
FFF8 0000h–FFFF FFFFh
FFB8 0000h–FFBF FFFFh
000E 0000h–000F FFFFh
27:24 BIOS_F0_IDSEL — R/W. IDSEL for two 512-KB BIOS memory ranges. The IDSEL programmed in
this field addresses the following memory ranges:
FFF0 0000h–FFF7 FFFFh
FFB0 0000h–FFB7 FFFFh
23:20 BIOS_E8_IDSEL — R/W. IDSEL for two 512-KB BIOS memory ranges. The IDSEL programmed in
this field addresses the following memory ranges:
FFE8 0000h–FFEF FFFFh
FFA8 0000h–FFAF FFFFh
19:16 BIOS_E0_IDSEL — R/W. IDSEL for two 512-KB BIOS memory ranges. The IDSEL programmed in
this field addresses the following memory ranges:
FFE0 0000h–FFE7 FFFFh
FFA0 0000h–FFA7 FFFFh