ACS8520T Semtech, ACS8520T Datasheet - Page 72

• 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
[3:0]
Bit 7
[7:4]
[3:0]
19 (cont...)
1A
cnfg_ref_selection_priority
(3 & 4)
Description
cnfg_ref_selection_priority_3
This 4-bit value represents the relative priority of
input I3. 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
(5 & 6)
Description
cnfg_ref_selection_priority_6
This 4-bit value represents the relative priority of
input I6. 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_5
This 4-bit value represents the relative priority of
input I5. 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_4
cnfg_ref_selection_priority_6
Bit 6
Bit 6
Bit 5
Bit 5
Description
Description
Bit 4
Bit 4
FINAL
Page 72
(R/W) Configures the relative
priority of input sources I3 and I4.
(R/W) Configures the relative
priority of input sources I5 and I6.
0001-1111
0001-1111
0001-1111
Bit Value
Bit Value
0000
0000
0000
Bit 3
Bit 3
Value Description
Input I3 unavailable for automatic selection.
Input I3 priority value.
Value Description
Input I6 unavailable for automatic selection.
Input I6 priority value.
Input I5 unavailable for automatic selection.
Input I5 priority value.
cnfg_ref_selection_priority_3
cnfg_ref_selection_priority_5
Bit 2
Bit 2
Default Value
Default Value
ACS8520 SETS
Bit 1
Bit 1
(T0)*
(T4)*
(T0)*
(T4)*
DATASHEET
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0101 0100
0000 0000
0111 0110
0111 0110
Bit 0
Bit 0