CS61574A/75 Cirrus Logic, Inc., CS61574A/75 Datasheet - Page 19

• Manufacturer Part Number: CS61574A/75
• Description: T1/E1 Line Interface Unit for Stratum-4 applications
• Manufacturer: Cirrus Logic, Inc.

Power Supply
The device operates from a single +5 Volt supply.
Separate pins for transmit and receive supplies
provide internal isolation. These pins should be
connected externally near the device and decou-
pled to their respective grounds. TV+ must not
exceed RV+ by more than 0.3V.
Decoupling and filtering of the power supplies is
crucial for the proper operation of the analog cir-
cuits in both the transmit and receive paths. A 1.0
and TGND, and a 0.1 F capacitor should be con-
nected between RV+ and RGND. Use mylar or
ceramic capacitors and place them as closely as
possible to their respective power supply pins. A
68 F tantalum capacitor should be added close
to the RV+/RGND supply. Wire-wrap bread-
boarding of the line interface is not recommended
because lead resistance and inductance serve to
defeat the function of the decoupling capacitors.
DS154F2
5
0
0
0
0
1
1
1
1
F capacitor should be connected between TV+
Bits
Table 12. Coding for Serial Output bits 5,6,7
6
0
0
1
1
0
0
1
1
7
0
1
0
1
0
1
0
1
Reset has occurred or no program input.
TAOS in effect.
LLOOP in effect
TAOS/LLOOP in effect.
RLOOP in effect.
DPM changed state since last "clear DPM"
occurred.
LOS changed state since last "clear LOS"
occurred.
LOS and DPM have changed state since
last "clear LOS" and "clear DPM".
Status
Schematic & Layout Review Service
C a l l : ( 5 1 2 ) 4 4 5 - 7 2 2 2
Confirm Optimum
Schematic & Layout
Before Building Your Board.
For Our Free Review Service
Call Applications Engineering.
CS61574A CS61575
19