11274-001 AMI Semiconductor, Inc., 11274-001 Datasheet - Page 14

• Manufacturer Part Number: 11274-001
• Description: Logic and Timing, Programmable Line Lock Clock Generator IC, Tape and Reel
• Manufacturer: AMI Semiconductor, Inc.

FS6131-01
FS6131-01
FS6131-01
FS6131-01
Programmable Line Lock Clock Generator IC
Programmable Line Lock Clock Generator IC
Programmable Line Lock Clock Generator IC
Programmable Line Lock Clock Generator IC
Table 8: Divider Control Bits
FBKDIV[13:0]
REFDIV[11:0]
Reserved (0)
POST1[1:0]
POST2[1:0]
POST3[1:0]
(Bits 37-24)
(Bits 17-16)
(Bits 19-18)
(Bits 21-20)
(Bits 23-22)
(Bits 11-0)
NAME
REFerence DIVider (N
FeedBacK DIVider (N
FBKDIV[2:0]
FBKDIV[13:3]
POST Divider #1 (N
Bit 17 = 0
Bit 16 = 0
Bit 17 = 0
Bit 16 = 1
Bit 17 = 1
Bit 16 = 0
Bit 17 = 1
Bit 16 = 1
POST Divider #2 (N
Bit 19 = 0
Bit 18 = 0
Bit 19 = 0
Bit 18 = 1
Bit 19 = 1
Bit 18 = 0
Bit 19 = 1
Bit 18 = 1
POST Divider #3 (N
Bit 21 = 0
Bit 20 = 0
Bit 21 = 0
Bit 20 = 1
Bit 21 = 1
Bit 20 = 0
Bit 21 = 1
Bit 20 = 1
Set these reserved bits to 0
DESCRIPTION
A-Counter Value
M-Counter Value
Divide by 1
Divide by 2
Divide by 4
Divide by 8
Divide by 1
Divide by 3
Divide by 5
Divide by 4
Divide by 1
Divide by 3
Divide by 5
Divide by 4
P1
P2
P3
)
)
)
F
R
)
)
14
Table 9: Crystal Loop Tuning Bits
Table 10: Crystal Loop Control ROM
XLROM
XLROM[2:0]
(Bits 53-52)
(Bits 51-49)
(Bits 59-56)
[2]
XLCP[1:0]
XLSWAP
0
0
0
0
1
1
1
1
XLPDEN
XCT[3:0]
XLVTEN
(Bit 61)
(Bit 54)
(Bit 55)
NAME
XLROM
[1]
0
0
1
1
0
0
1
1
Crystal Loop Charge Pump current
Bit 53 = 0
Bit 52 = 0
Bit 53 = 0
Bit 52 = 1
Bit 53 = 1
Bit 52 = 0
Bit 53 = 1
Bit 52 = 1
Crystal Loop Divider ROM select and Crystal
Oscillator Power-Down (see Table 10)
Crystal Loop Voltage fine Tune ENable
Bit = 0
Bit = 1
Crystal Loop SWAP polarity
Bit = 0
Bit = 1
Crystal Loop Power Down Enable
Bit = 0
Bit = 1
Crystal Coarse Tune (see Table 11)
XLROM
[0]
0
1
0
1
0
1
0
1
DIVIDER
Current = 1.5 A
Current = 5 A
Current = 8 A
Current = 24 A
Disabled (fine tune is inactive)
Enabled (fine tune is active)
Use with an external VCXO that
increases in frequency in re-
sponse to an increasing voltage
at the XTUNE pin.
Use with a VCXO that increases
in frequency in response to a
decreasing voltage at the XTUNE
pin.
Use this setting for Internal
VCXO
Disabled (crystal loop operates)
Enabled
(crystal loop is powered down)
DESCRIPTION
VCXO
Crystal Oscillator Power-Down
3072
3156
2430
2500
4000
3375
1
FREQUENCY (MHz)
CRYSTAL
24.576
25.248
19.44
20.00
32.00
27.00
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