Advance Product Information
Subject to Change
VSC7111 Datasheet
Functional Descriptions
Table 3.
Input EQ Static Mode Settings (continued)
ISE1
LOPWR SA3_ SSB SA2_MISO SDA_ MOSI Gain1 Gain2 Short
ISE1
Long
ISE2
Short
ISE2
Long
0
0
0
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
1
01100 10100 10000
01100 10000 10000
01000 10000 11000
11111 11111 00000
11011 11111 00100
10110 11011 01000
10100 10110 01010
10000 10110 01100
01100 10100 10000
01100 10000 10000
01000 10000 11000
00011
00100
01000
00000
00000
00001
00011
00011
00011
00100
01000
01000
01100
10000
00000
00000
00100
01000
01000
01000
01100
10000
00011
00011
00100
00000
00000
00000
00001
00001
00011
00011
00100
Output amplitude and equalization (pre-emphasis) are controlled in the static
configuration mode by tying the SA1 and SA0 pins high or low. The following table
shows the static pin settings and equivalent internal register values.
Table 4.
Output EQ Static Mode Settings
Voltage PE1
LOPWR SA1 SA0 Swing Decay
PE1
Level
PE2
Decay
PE2
Level
Description
Nominal
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1001
1010
1010
1100
1111
1000
1001
1010
000
000
100
000
100
000
000
000
000
000
000
110
001
000
000
110
100
000
000
100
001
000
000
100
001
110
000
100
000
000
000
000
Hi spd Hi EQ
8G Hi EQ
Lrg Low EQ
Video Mode
Low Pwr
6G Hi EQ
Lrg Low EQ
Inputs and outputs are powered on or off in the static configuration depending on the
status of the MUXCFG and SCK pins in conjunction with the LOS indication and PCIe
receiver detect state machine status. The following table shows the various possibilities
of the I/O power state in static mode. FLOSn = 1 indicates that an LOS condition lasting
longer than 1 ms has been detected at input n.
Table 5.
Power State of Inputs and Outputs in Static Mode
MUXCFG = 1 MUXCFG = 0 and SCK = 0
MUX/fanout Non-PCIe buffer
MUXCFG = 0 and SCK = 1
PCIe buffer mode
I/O
mode
mode
A0/A0N Not (FLOS0)
A1/A1N Not (FLOS1)
A2/A2N Not (FLOS2)
A3/A3N Not (FLOS3)
Y0/Y0N Always ON
Not (FLOS0)
Not (FLOS1)
Not (FLOS2)
Not (FLOS3)
Not (FLOS0)
Depends on Rx detect state machine
Depends on Rx detect state machine
Depends on Rx detect state machine
Depends on Rx detect state machine
Always ON
Revision 2.0
September 2010
Confidential
Page 14
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
