ACS8526LC Semtech Corporation, ACS8526LC Datasheet - Page 53

• Manufacturer Part Number: ACS8526LC
• Description: Line Card Protection Switch for PDH, Sonet or SDH Systems
• Manufacturer: Semtech Corporation

Address (hex):
Address (hex):
Revision 4.01/June 2006 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
Register Name
DPLL2_PD2_
gain_enable
Bit No.
Bit No.
Bit 7
[2:0]
Bit 7
[6:3]
[2:0]
7
6B (cont...)
6C
cnfg_DPLL1_damping
Description
DPLL1_damping
Register to configure the damping factor of DPLL1.
The bit values correspond to different damping
factors, depending on the bandwidth selected.
The Gain Peak for the Damping Factors given in the
Value Description (right) are the same as those
tabulated in the description for Reg. 6A.
cnfg_DPLL2_PD2_gain
Description
DPLL2_PD2_gain_enable
Not used.
DPLL2_PD2_gain_digital
Register to control the gain of Phase Detector 2
when locking in digital feedback mode. This setting
is always used if gain is disabled in Bit 7,
DPLL2_PD2_gain_enable.
Bit 6
Bit 6
DPLL1_PD2_gain_alog_8k
Bit 5
Bit 5
Description
Description
Bit 4
Bit 4
FINAL
Page 53
(R/W) Register to configure the
damping factor of DPLL1, along
with the gain of the Phase
Detector 2 in some modes.
(R/W) Register to configure the
gain of Phase Detector 2 in some
modes for DPLL2.
Bit Value
Bit Value
Bit 3
Bit 3
001
010
011
100
101
0
1
-
-
Value Description
Damping Factor
for Bandwidth
of 18 Hz:
1.2
2.5
5
5
5
Value Description
DPLL2 Phase Detector 2 not used.
DPLL2 Phase Detector 2 gain enabled and choice of
gain determined according to the locking mode:
- digital feedback mode
- analog feedback mode
-
Gain value of Phase Detector 2 when locking in
digital feedback mode.
Bit 2
Bit 2
ACS8526 LC/P LITE
DPLL2_PD2_gain_digital
DPLL1_damping
Default Value
Damping Factor
for Bandwidth
of 35 Hz:
1.2
2.5
5
10
10
Default Value
Bit 1
Bit 1
DATASHEET
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0001 0100
Damping Factor
for Bandwidth
of 70 Hz:
1.2
2.5
5
10
20
1100 0010
Bit 0
Bit 0