ACS8520T Semtech, ACS8520T Datasheet - Page 73

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

Address (hex):
Address (hex):
Revision 3.02/October 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
Register Name
Bit No.
Bit No.
Bit 7
[7:4]
[3:0]
Bit 7
[7:4]
1B
1C
cnfg_ref_selection_priority
(7 & 8)
Description
cnfg_ref_selection_priority_8
This 4-bit value represents the relative priority of
input I8. The smaller the number, the higher the
priority; zero disables the input.
*When Bit 4 (T4_T0_select) of Reg. 4B
(cnfg_registers_source_select) = 0 the priority for
the T0 path is configured.
When this Bit 4 = 1 the priority for the T4 path is
configured.
cnfg_ref_selection_priority_7
This 4-bit value represents the relative priority of
input I7. The smaller the number, the higher the
priority; zero disables the input.
*When Bit 4 (T4_T0_select) of Reg. 4B
(cnfg_registers_source_select) = 0 the priority for
the T0 path is configured.
When this Bit 4 = 1 the priority for the T4 path is
configured.
cnfg_ref_selection_priority
(9 & 10)
Description
cnfg_ref_selection_priority_10
This 4-bit value represents the relative priority of
input I10. The smaller the number, the higher the
priority; zero disables the input.
*When Bit 4 (T4_T0_select) of Reg. 4B
(cnfg_registers_source_select) = 0 the priority for
the T0 path is configured.
When this Bit 4 = 1 the priority for the T4 path is
configured.
cnfg_ref_selection_priority_10
cnfg_ref_selection_priority_8
Bit 6
Bit 6
Bit 5
Bit 5
Description
Description
Bit 4
Bit 4
FINAL
Page 73
(R/W) Configures the relative
priority of input sources I7 and I8.
(R/W) Configures the relative
priority of input sources I9 and
I10.
0001-1111
0001-1111
0001-1111
Bit Value
Bit Value
0000
0000
0000
Bit 3
Bit 3
Value Description
Input I8 unavailable for automatic selection.
Input I8 priority value.
Input I7 unavailable for automatic selection.
Input I7 priority value.
Value Description
Input I10 unavailable for automatic selection.
Input I10 priority value.
cnfg_ref_selection_priority_9
cnfg_ref_selection_priority_7
Bit 2
Bit 2
Default Value
Default Value
ACS8520 SETS
Bit 1
Bit 1
(T0)*
(T4)*
(T0)*
(T4)*
DATASHEET
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1001 1000
1001 1000
1011 1010
1011 1010
Bit 0
Bit 0