Intel E3815 FH8065301567411 Data Sheet
Product codes
FH8065301567411
Intel
®
Atom™ Processor E3800 Product Family
2434
Datasheet
18.10.5
USB2 PER PORT (USB2_PER_PORT_LANE4)—Offset 4500h
Access Method
Default: 0004F201h
15
1b
RW
PerPort HS Transmitter Pre-emphasis (PERPORTTXPREEMPEN_0):
Config bit
(per port) Enables HS transmitter pre-emphasis for the respective ports 1 enabled pre-
emphasis or when PORTRESERVED[0]=1 0 disabled pre-emphasis
This has to be 1 if either to enable pre-emphasis or de-emphasis, 0 to completely turn
OFF.
Power Well:
SUS
14
1b
RW
PerPort Half Bit Pre-emphasis (PERPORTTXPEHALF_0):
Config bit (per port) to
select between half-bit or full-bit implementation 1 - select half-bit pre-emphasis 0 -
select full-bit pre-emphasis or when PORTRESERVED[0]=1
in de-emphasis mode, this has to be 0
Power Well:
SUS
13:11
110b
RW
PerPort HS Pre-emphasis Bias (PERPORTPETXISET_0):
Config bit (per port) HS
Pre-emphasis Bias current offset bit (2:0) Value Voh 000 0mV 001 11.250mV 010
16.875mV 011 28.125mV 100 28.125mV 101 39.375mV 110 45.000mV (default) 111
56.250mV
Power Well:
SUS
10:8
010b
RO
Reserved (RSVD):
Reserved.
7
0b
RO
Reserved (RSVD):
Reserved.
6:4
000b
RO
Reserved (RSVD):
Reserved.
3
0b
RW
DE-EMPHASIS ON/OFF FOR DEBUG (PORTRESERVED):
Config bit to select De-
emphasis mode ON/OFF for TX-HS debug purpose. 0 De-emphasis OFF (default) 1 De-
emphasis ON In order to enable De-emphasis ON, ensure
RERPORTTXPREEMPEN(0h15)=1 and PERPORTTXPEHALF(0h14)=0
Power Well:
SUS
2
0b
RO
Reserved (RSVD):
Reserved.
1
0b
RO
Reserved (RSVD):
Reserved.
0
1b
RO
Reserved (RSVD):
Reserved.
Bit
Range
Default &
Access
Field Name (ID): Description
Type:
Message Bus Register
(Size: 32 bits)
Offset:
Op Codes:
h - Read, h - Write
h - Read, h - Write