ACS8520T Semtech, ACS8520T Datasheet - Page 131

• 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
Bit 7
[7:0]
0
7D (cont...)
7E
cnfg_interrupt
Description
int_polarity
The interrupt pin can be configured to be active
High or Low.
cnfg_protection
Description
protection_value
This register can be used to ensure that the
software writes a specific value to this register,
before being able to modify any other register in the
device. Three modes of protection are offered,
(i) protected
(ii) fully unprotected
(iii) single unprotected.
When protected, no other register in the device can
be written to. When fully unprotected, any writeable
register in the device can be written to. When single
unprotected, only one register can be written before
the device automatically re-protects itself.
Bit 6
Bit 6
Bit 5
Bit 5
Description
Description
Bit 4
Bit 4
protection_value
FINAL
Page 131
(R/W) Register to configure
interrupt output.
(R/W) Protection register to
protect against erroneous
software writes.
0000 0000 –
1000 0100
1000 0101
1000 0110
1000 0111 –
1111 1111
Bit Value
Bit Value
Bit 3
Bit 3
0
1
GPO_en
Value Description
Active Low - pin driven Low to indicate active
interrupt.
Active High - pin driven High to indicate active
interrupt.
Value Description
Protected mode.
Fully unprotected.
Single unprotected.
Protected mode.
Bit 2
Bit 2
Default Value
tristate_en
Default Value
ACS8520 SETS
Bit 1
Bit 1
DATASHEET
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0000 0010
int_polarity
1000 0101
Bit 0
Bit 0