ACS8520T Semtech, ACS8520T Datasheet - Page 99

• Manufacturer Part Number: ACS8520T
• Description: Synchronous Equipment Timing Source (SETS) for Stratum 3/4E/4 and SMC Systems
• Manufacturer: Semtech

Address (hex):
Revision 3.02/October 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
Bit No.
Bit 7
[7:5]
[3:0]
4
4B
cnfg_registers_source_select
Description
Not used.
T4_T0_select
Bit to select between the T0 and T4 path for:
Reg. 0A, 0B (sts_priority_table)
Reg. 0C, 0D and 07 (sts_current_DPLL_frequency)
Reg. 18 to 1E (cnfg_ref_selection_priority)
Reg. 77, 78 (sts_current_phase)
frequency_measurement_channel_select
Register to select which input channel the
frequency measurement result in Reg. 4C
(sts_freq_measurement) is taken from.
Bit 6
Bit 5
Description
T4_T0_select
Bit 4
FINAL
Page 99
(R/W) Register to select the
source of many of the registers.
Bit Value
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Bit 3
0
1
-
frequency_measurement_channel_select
Value Description
-
T0 path registers selected.
T4 path registers selected.
Not used- refers to no input channel.
Frequency measurement taken from input I1.
Frequency measurement taken from input I2.
Frequency measurement taken from input I3.
Frequency measurement taken from input I4.
Frequency measurement taken from input I5.
Frequency measurement taken from input I6.
Frequency measurement taken from input I7.
Frequency measurement taken from input I8.
Frequency measurement taken from input I9.
Frequency measurement taken from input I10.
Frequency measurement taken from input I11.
Frequency measurement taken from input I12.
Frequency measurement taken from input I13.
Frequency measurement taken from input I14.
Not used- refers to no input channel.
Bit 2
Default Value
ACS8520 SETS
Bit 1
DATASHEET
www.semtech.com
0000 0000
Bit 0