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9SQL4954BNLGI

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
NOVEMBER 4, 2016 13 4-OUTPUT CK420BQ DERIVATIVE
9SQL4954 DATASHEET
SMBus Table: Revision and Vendor ID Register
Byte 5 Name Control Function Type 0 1 Default
Bit 7
RID3
R
0
Bit 6
RID2
R
0
Bit 5
RID1
R
0
Bit 4
RID0
R
1
Bit 3
VID3
R
0
Bit 2
VID2
R
0
Bit 1
VID1
R
0
Bit 0
VID0
R
1
SMBus Table: Device Type/Device ID
Byte 6 Name Control Function Type 0 1 Default
Bit 7
Device Type1
R
0
Bit 6
Device Type0
R
0
Bit 5
Device ID5
R
0
Bit 4
Device ID4
R
0
Bit 3
Device ID3
R
0
Bit 2
Device ID2
R
1
Bit 1
Device ID1
R
0
Bit 0
Device ID0
R
0
SMBus Table: Byte Count Register
Byte 7 Name Control Function Type 0 1 Default
Bit 7
X
Bit 6
X
Bit 5
X
Bit 4
BC4 RW 0
Bit 3
BC3 RW 1
Bit 2
BC2 RW 0
Bit 1
BC1 RW 0
Bit 0
BC0 RW 0
Bytes 8 and 9 are Reserved .
SMBus Table: PLL MN Enable, PD_Restore
Byte 10 Name Control Function Type 0 1 Default
Bit 7
PLL M/N En M/N Programming Enable RW M/N Prog. Disabled M/N Prog. Enabled 0
Bit 6
Power-Down (PD) Restore Restore Default Config. In PD RW Clear Config in PD Keep Config in PD 1
Bit 5
X
Bit 4
X
Bit 3
X
Bit 2
X
Bit 1
X
Bit 0
X
SMBus Table: Stop State Control
Byte 11 Name Control Function Type 0 1 Default
Bit 7
X
Bit 6
X
Bit 5
X
Bit 4
X
Bit 3
X
Bit 2
X
Bit 1
STP[1] RW 00 = Low/Low 10 = High/Low 0
Bit 0
STP[0] RW 01 = HiZ/HiZ 11 = Low/High 0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Writing to this register will configure how
many bytes will be read back, default is
= 8 bytes.
Byte Count Programming
Reserved
Revision ID
Reserved
0001 = IDT
000100 binary or 04 hex
B rev = 0001
VENDOR ID
00 = 9SQL49xxDevice Type
Device ID
Reserved
Reserved
Reserved
Reserved
True/Complement BCLK Output
Disable State
4-OUTPUT CK420BQ DERIVATIVE 14 NOVEMBER 4, 2016
9SQL4954 DATASHEET
SMBus Table: Impedance Control
Byte 12 Name Control Function Type 0 1 Default
Bit 7
BCLK1_imp[1] BCLK1 Zout RW 00=33
Ω
Zout 10=100
Ω
Zout 0
Bit 6
BCLK1_imp[0] BCLK1 Zout RW 01=85
Ω
Zout 11 = Reserved 1
Bit 5
X
Bit 4
X
Bit 3
BCLK0_imp[1] BCLK0 Zout RW 00=33
Ω
Zout 10=100
Ω
Zout 0
Bit 2
BCLK0_imp[0] BCLK0 Zout RW 01=85
Ω
Zout 11 = Reserved 1
Bit 1
X
Bit 0
X
SMBus Table: Impedance Control
Byte 13 Name Control Function Type 0 1 Default
Bit 7
X
Bit 6
X
Bit 5
BCLK3_imp[1] BCLK3 Zout RW 00=33
Ω
Zout 10=100
Ω
Zout 0
Bit 4
BCLK3_imp[0] BCLK3 Zout RW 01=85
Ω
Zout 11 = Reserved 1
Bit 3
BCLK2_imp[1] BCLK2 Zout RW 00=33
Ω
Zout 10=100
Ω
Zout 0
Bit 2
BCLK2_imp[0] BCLK2 Zout RW 01=85
Ω
Zout 11 = Reserved 1
Bit 1
X
Bit 0
X
SMBus Table: Pull-up Pull-down Control
Byte 14 Name Control Function Type 0 1 Default
Bit 7
OE1_pu/pd[1] RW 00=None 10=Pup 0
Bit 6
OE1_pu/pd[0] RW 01=Pdwn 11 = Pup+Pdwn 1
Bit 5
X
Bit 4
X
Bit 3
OE0pu/pd[1] RW 00=None 10=Pup 0
Bit 2
OE0_pu/pd[0] RW 01=Pdwn 11 = Pup+Pdwn 1
Bit 1
X
Bit 0
X
SMBus Table: Pull-up Pull-down Control
Byte 15 Name Control Function Type 0 1 Default
Bit 7
X
Bit 6
X
Bit 5
OE3_pu/pd[1] RW 00=None 10=Pup 0
Bit 4
OE3_pu/pd[0] RW 01=Pdwn 11 = Pup+Pdwn 1
Bit 3
OE2_pu/pd[1] RW 00=None 10=Pup 0
Bit 2
OE2_pu/pd[0] RW 01=Pdwn 11 = Pup+Pdwn 1
Bit 1
X
Bit 0
X
SMBus Table: Pull-up Pull-down Control
Byte 16 Name Control Function Type 0 1 Default
Bit 7
0
Bit 6
0
Bit 5
1
Bit 4
0
Bit 3
0
Bit 2
1
Bit 1
CKPWRGD_PD_pu/pd[1] RW 00=None 10=Pup 1
Bit 0
CKPWRGD_PD_pu/pd[0] RW 01=Pdwn 11 = Pup+Pdwn 0
Byte 17 is Reserved
Reserved
OE3 Pull-up(PuP)/
Pull-down(Pdwn) control
OE2 Pull-up(PuP)/
Pull-down(Pdwn) control
Reserved
Reserved
Reserved
CKPWRGD_PD Pull-up(PuP)/
Pull-down(Pdwn) control
Reserved
Reserved
Reserved
OE1 Pull-up(PuP)/
Pull-down(Pdwn) control
Reserved
Reserved
OE0Pull-up(PuP)/
Pull-down(Pdwn) control
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
NOVEMBER 4, 2016 15 4-OUTPUT CK420BQ DERIVATIVE
9SQL4954 DATASHEET
SMBus Table: Polarity Control
Byte 18 Name Control Function Type 0 1 Default
Bit 7
0
Bit 6
OE3_polarity Sets OE3 polarity RW Enabled when Low Enabled when High 0
Bit 5
OE2_polarity Sets OE2 polarity RW Enabled when Low Enabled when High 0
Bit 4
0
Bit 3
OE1_polarity Sets OE1 polarity RW Enabled when Low Enabled when High 0
Bit 2
0
Bit 1
OE0_polarity Sets OE0 polarity RW Enabled when Low Enabled when High 0
Bit 0
0
SMBus Table: Polarity Control
Byte 19 Name Control Function Type 0 1 Default
Bit 7
0
Bit 6
0
Bit 5
0
Bit 4
0
Bit 3
0
Bit 2
0
Bit 1
0
Bit 0
CKPWRGD_PD
Determines
CKPWRGD_PD polarity
RW
Power Down when
Low
Power Down when
High
0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

9SQL4954BNLGI

Mfr. #:
Buy 9SQL4954BNLGI
Manufacturer:
IDT
Description:
Clock Buffer 4 O/P CK420BQ Lite OEM
Lifecycle:
New from this manufacturer.
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