ACS8520 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8520' PDF : 150 Pages View PDF
ACS8520 SETS
ADVANCED COMMUNICATIONS
Address (hex): 39
Register Name cnfg_digtial_frequencies
FINAL
DATASHEET
Description
(R/W) Configures the actual
Default Value 0000 1000
frequencies of Digital1 & Digital2.
Bit 7
Bit 6
digital2_frequency
Bit 5
Bit 4
digital1_frequency
Bit 3
Bit 2
Bit 1
Bit 0
Bit No.
Description
Bit Value Value Description
[7:6]
[5:4]
[3:0]
digital2_frequency
Configures the frequency of Digital2. Whether this is
SONET or SDH based is configured by Bit 6
(dig2_sonsdh) of Reg. 38.
digital1_frequency
Configures the frequency of Digital1. Whether this is
SONET or SDH based is configured by Bit 5
(dig1_sonsdh) of Reg. 38.
Not used.
00
Digital2 set to 1544 kHz or 2048 kHz.
01
Digital2 set to 3088 kHz or 4096 kHz.
10
Digital2 set to 6176 kHz or 8192 kHz.
11
Digital2 set to 12353 kHz or 16384 kHz.
00
Digital1 set to 1544 kHz or 2048 kHz.
01
Digital1 set to 3088 kHz or 4096 kHz.
10
Digital1 set to 6176 kHz or 8192 kHz.
11
Digital1 set to 12353 kHz or 16384 kHz.
Address (hex): 3A
Register Name cnfg_differential_outputs
Description
Bit 7
Bit 6
Bit 5
Bit 4
Bit No.
[7:4]
[3:2]
Description
Not used.
TO7_PECL_LVDS
Selection of the electrical compatibility of TO7
between 3 V PECL and 3 V LVDS.
[1:0]
TO6_LVDS_PECL
Selection of the electrical compatibility of TO6
between 3 V PECL and 3 V LVDS.
(R/W) Configures the electrical
compatibility of the differential
output drivers to be 3 V PECL or
3 V LVDS.
Default Value
1100 0110
Bit 3
Bit 2
TO7_PECL_LVDS
Bit 1
Bit 0
TO6_LVDS_PECL
Bit Value Value Description
-
-
00
Output TO7 disabled.
01
Output T07 3 V PECL compatible.
10
Output TO7 3 V LVDS compatible.
11
Not used.
00
Output TO6 disabled.
01
Output T06 3 V PECL compatible.
10
Output TO6 3 V LVDS compatible.
11
Not used.
Revision 3.02/October 2005 © Semtech Corp.
Page 87
www.semtech.com
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