9DBU0731 Datasheet, PDF (11/17 Pages) Integrated Circuit Systems – slew rate for each output

9DBU0731 DATASHEET
SMBus Table: Output Enable Register ¹
Byte 0
Name
Control Function
Type
0
Bit 7
DIF OE5
Output Enable
RW
Low/Low
Bit 6
DIF OE4
Output Enable
RW
Low/Low
Bit 5
Reserved
Bit 4
DIF OE3
Output Enable
RW
Low/Low
Bit 3
DIF OE2
Output Enable
RW
Low/Low
Bit 2
DIF OE1
Output Enable
RW
Low/Low
Bit 1
Reserved
Bit 0
DIF OE0
Output Enable
RW
Low/Low
1. A low on these bits will override the OE# pin and force the differential output Low/Low
SMBus Table: PLL Operating Mode and Output Amplitude Control Register
Byte 1
Name
Control Function
Type
0
Bit 7
Reserved
Bit 6
Reserved
Bit 5
DIF OE6
Output Enable
RW
Low/Low
Bit 4
Reserved
Bit 3
Reserved
Bit 2
Reserved
Bit 1
Bit 0
AMPLITUDE 1
AMPLITUDE 0
Controls Output Amplitude ^RW
RW
00 = 0.55V
10 = 0.7V
1. A low on the DIF OE bit will override the OE# pin and force the differential output Low/Low
SMBus Table: DIF Slew Rate Control Register
Byte 2
Name
Control Function
Type
Bit 7
SLEWRATESEL DIF5
Adjust Slew Rate of DIF5 RW
Bit 6
SLEWRATESEL DIF4
Adjust Slew Rate of DIF4 RW
Bit 5
Reserved
Bit 4
SLEWRATESEL DIF3
Adjust Slew Rate of DIF3 RW
Bit 3
SLEWRATESEL DIF2
Adjust Slew Rate of DIF2 RW
Bit 2
SLEWRATESEL DIF1
Adjust Slew Rate of DIF1 RW
Bit 1
Reserved
Bit 0
SLEWRATESEL DIF0
Adjust Slew Rate of DIF0 RW
Note: See "DIF 0.7V Low-Power HCSL Outputs" table for slew rates.
0
Slow Setting
Slow Setting
Slow Setting
Slow Setting
Slow Setting
Slow Setting
SMBus Table: DIF Slew Rate Control Register
Byte 3
Name
Control Function
Type
Bit 7
Reserved
Bit 6
Reserved
Bit 5
Reserved
Bit 4
Reserved
Bit 3
Reserved
Bit 2
Reserved
Bit 1
Reserved
Bit 0
SLEWRATESEL DIF6
Adjust Slew Rate of DIF6 RW
Note: See "DIF 0.7V Low-Power HCSL Outputs" table for slew rates.
0
Slow Setting
Byte 4 is Reserved and reads back 'hFF
1
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Default
1
1
1
1
1
1
1
1
1
Enabled
01= 0.65V
11 = 0.8V
Default
0
1
1
0
1
1
1
0
1
Fast Setting
Fast Setting
Fast Setting
Fast Setting
Fast Setting
Fast Setting
Default
1
1
1
1
1
1
1
1
1
Fast Setting
Default
1
1
0
0
0
1
1
1
MARCH 8, 2017
11
7-OUTPUT 1.5V PCIE GEN1-2-3 FANOUT BUFFER