LAN9730 Datasheet, PDF (187/222 Pages) SMSC Corporation – High-Speed Inter-Chip (HSIC) USB 2.0

LAN9730/LAN9730i
6.5.8 EDPD NLP/CROSSOVER TIMEREGISTER
Index (In Decimal): 16
Size:
16 bits
Bits
Description
15 EDPD TX NLP Enable
When in Energy Detect Power-Down (EDPD) mode (EDPWRDOWN=1), this
bit enables the transmission of single TX NLPs at the interval defined by the
EDPD TX NLP Interval Timer Select field.
Type
R/W
NASR
14:13
0 = TX NLP disabled
1 = TX NLP enabled when in EDPD mode
EDPD TX NLP Interval Timer Select
When in Energy Detect Power-Down (EDPD) mode (EDPWRDOWN=1) and
EDPD TX NLP Enable is 1, this field defines the interval used to send single
TX NLPs.
R/W
NASR
00 = 1 second (default)
01 = 768 ms
10 = 512 ms
11 = 256 ms
12 EDPD RX Single NLP Wake Enable
R/W
When in Energy Detect Power-Down (EDPD) mode (EDPWRDOWN=1), this ^NASR
bit enables waking the PHY on reception of a single RX NLP.
11:10
0 = RX NLP wake disabled
1 = TX NLP wake enabled when in EDPD mode
EDPD RX NLP Max Interval Detect Select
When in Energy Detect Power-Down (EDPD) mode (EDPWRDOWN=1) and
EDPD RX Single NLP Wake Enable is 0, this field defines the maximum inter-
val for detecting two RX NLPs to wake from EDPD mode.
R/W
NASR
00 = 64 ms (default)
01 = 256 ms
10 = 512 ms
11 = 1 second
9:2 RESERVED
RO
1 EDPD Extend Crossover
R/W
When in Energy Detect Power-Down (EDPD) mode (EDPWRDOWN = 1), set- ^NASR
ting this bit to 1 extends the crossover time by 2976 ms.
0 = Crossover time extension disabled
1 = Crossover time extension enabled (2976 ms)
0 Extend Manual 10/100 Auto-MDIX Crossover Time
When Auto-MIDX is enabled and the PHY is in manual 10BASE-T or
100BASE-TX mode, setting this bit to 1 extends the crossover time by
1984 ms to allow linking to an auto-negotiation link partner PHY.
R/W
NASR
0 = Crossover time extension disabled
1 = Crossover time extension enabled (1984 ms)
Default
0b
00b
0b
00b
-
0b
0b
 2012-2015 Microchip Technology Inc.
DS00001946A-page 187