VSC8601XKN Vitesse Semiconductor Corp, VSC8601XKN Datasheet - Page 50

• Manufacturer Part Number: VSC8601XKN
• Description: IC PHY 10/100/1000 64-EP-LQFP
• Manufacturer: Vitesse Semiconductor Corp
• Type: PHY Transceiverr

Specifications of VSC8601XKN

• Number Of Drivers/receivers: 1/1
• Protocol: Gigabit Ethernet
• Voltage - Supply: 2.5V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP Exposed Pad, 64-eLQFP, 64-HLQFP
• Case: TQFP
• Dc: 06+
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 907-1028

4.2.20
Table 27.
4.2.21
Table 28.
Revision 4.1
September 2009
•
Extended PHY Control Set 1
The bits in the extended control set control the MAC auto-negotiation functioning,
SGMII alignment errors, and EEPROM status. The following table lists the available
settings.
Extended PHY Control 1, Address 23 (0x17)
Note After configuring bit 12 of the extended PHY control register set 1, a software
reset (register 0, bit 15) must be written to change the device operating mode. Bit 1
allows for flexibility in printed circuit board layouts because it can reorder the TXD pins.
Extended PHY Control Set 2
The second set of extended controls is located in register 24 in the main register space
for the device. The following table lists the settings and readouts available.
Extended PHY Control 2, Address 24 (0x18)
Bit
15:9
8
7:6
5
4:1
0
Bit
15:13
12:4
When bits 11:0 are set to 00, the squelch threshold levels are based on the IEEE
standard for 10BASE-T. When set to 01, the squelch level is decreased, which may
improve the bit error rate performance on long loops. When set to 10, the squelch
level is increased and may improve the bit error rate in high-noise environments.
Name
Reserved
RGMII skew timing
compensation
enable
Reserved
ActiPHY mode
enable
Reserved
Reserved
Name
100BASE-TX edge
rate control
Reserved
Access
Access
R/W
R/W
RO
RO
RO
RO
R/W
RO
Description
This is a sticky bit.
0 = Disabled.
1 = Adds 2 ns delay to the RX_CLK and
TX_CLK pins.
This is a sticky bit.
1 = Enabled.
Description
011 = +5 Edge rate (slowest).
010 = +4 Edge rate.
001 = +3 Edge rate.
000 = +2 Edge rate.
111 = +1 Edge rate.
110 = Default edge rate.
101 = –1 Edge rate.
100 = –2 Edge rate (fastest).
This is a sticky bit.
VSC8601 Datasheet
Configuration
Default
Default
Page 50
CMODE
CMODE
110