Datasheet, Volume 1 69
Signal Description
6.4 PCI Express*-based Interface Signals
Note:
1. PE_TX[3:0]/PE_TX#[3:0] and PE_RX[3:0]/PE_RX#[3:0] signals are only used for platforms that support
20 PCIe lanes. These signals are reserved on Desktop 3rd Generation Intel Core™ i7/i5 processors,
Desktop Intel® Pentium® processors and Desktop Intel® Celeron® processors.
6.5 Intel® Flexible Display (Intel® FDI) Interface Signals

Table 6-6. PCI Express* Graphics Interface Signals

Signal Name Description Direction/
Buffer Type
PEG_ICOMPI PCI Express* Input Current Compensation I
A
PEG_ICOMPO PCI Express* Current Compensation I
A
PEG_RCOMPO PCI Express* Resistance Compensation I
A
PEG_RX[15:0]
PEG_RX#[15:0]
PE_RX[3:0]1
PE_RX#[3:0]1
PCI Express* Receive Differential Pair I
PCI Express*
PEG_TX[15:0]
PEG_TX#[15:0]
PE_TX[3:0]1
PE_TX#[3:0]1
PCI Express* Transmit Differential Pair O
PCI Express*

Table 6-7. Intel® Flexible Display (Intel® FDI) Interface

Signal Name Description Direction/
Buffer Type
FDI0_FSYNC[0] Intel® Flexible Display Interface Frame Sync: Pipe A I
CMOS
FDI0_LSYNC[0] Intel® Flexible Display Interface Line Sync: Pipe A I
CMOS
FDI_TX[7:0]
FDI_TX#[7:0] Intel® Flexible Display Interface Transmit Differential
Pairs O
FDI
FDI1_FSYNC[1] Intel® Flexible Display Interface Frame Sync: Pipe B and C I
CMOS
FDI1_LSYNC[1] Intel® Flexible Display Interface Line Sync: Pipe B and C I
CMOS
FDI_INT Intel® Flexible Display Interface Hot-Plug Interrupt I
Asynchronous
CMOS