ACS8525 Semtech Corporation, ACS8525 Datasheet - Page 60

• Manufacturer Part Number: ACS8525
• Description: Line Card Protection Switch For Sonet/sdh Systems
• Manufacturer: Semtech Corporation

Address (hex):
Address (hex):
Revision 3.00/October 2003 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
Register Name
Bit No.
Bit No.
Bit 7
[7:2]
Bit 7
[4:0]
1
0
7
6
5
36
38
cnfg_differential_inputs
Description
Not used.
SEC2_DIFF_PECL
Configures the SEC2 DIFF input to be compatible
with either 3 V LVDS or 3 V PECL electrical levels.
SEC1_DIFF_PECL
Configures the SEC1 DIFF input to be compatible
with either 3 V LVDS or 3 V PECL electrical levels.
cnfg_dig_outputs_sonsdh
dig2_sonsdh
Description
Not used.
dig2_sonsdh
Selects whether the frequencies generated by the
Digital2 frequency generator are SONET derived or
SDH.
*Default value of this bit is set by the SONSDHB pin
at power-up.
dig1_sonsdh
Selects whether the frequencies generated by the
Digital1 frequency generator are SONET derived or
SDH.
*Default value of this bit is set by the SONSDHB pin
at power-up.
Not used.
Bit 6
Bit 6
dig1_sonsdh
Bit 5
Bit 5
Description
Description
Bit 4
Bit 4
FINAL
Page 60
(R/W) Configures the differential
inputs to be PECL or LVDS type
inputs.
Configures Digital1 and Digital2
output frequencies to be SONET
or SDH compatible frequencies.
Bit Value
Bit Value
Bit 3
Bit 3
0
1
0
1
1
0
1
0
-
-
-
Value Description
-
SEC2 DIFF input LVDS compatible.
SEC2 DIFF input PECL compatible (Default).
SEC1 DIFF input LVDS compatible.
SEC1 DIFF input PECL compatible (Default).
Value Description
-
Digital2 can be selected from 1,544/3,088/6,176/
12,352 kHz.
Digital2 can be selected from 2,048/4,096/8,192/
16,384 kHz.
Digital1 can be selected from 1,544/3,088/6,176/
12,352 kHz.
Digital1 can be selected from 2,048/4,096/8,192/
16,384 kHz.
-
Bit 2
Bit 2
Default Value
SEC2_DIFF_
PECL
Default Value
ACS8525 LC/P
Bit 1
Bit 1
DATASHEET
www.semtech.com
0000 0011
SEC1_DIFF_
PECL
0000 0100*
Bit 0
Bit 0