DS2180A Maxim Integrated Products, DS2180A Datasheet - Page 27

• Manufacturer Part Number: DS2180A
• Description: IC TRANSCEIVER T1 40-DIP
• Manufacturer: Maxim Integrated Products

Specifications of DS2180A

• Function: Transceiver
• Interface: T1
• Number Of Circuits: 1
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 3mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.600", 15.24mm)
• Includes: Alarm Generation and Detection, B7 Stuffing Mode, B8ZS Mode, Error Detection and Counter, "Hardware" Mode, Transparent Mode
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power (watts): -

repeating pattern ...00111000111000...(00111X0 if CCR.3–YELMD–is equal to a 1). In this mode, F
and F
causes the synchronizer to search for F
sync will be established using the F
F
alignment, RLOS will go low, and a false multiframe position may be indicated by RMSYNC. RFER will
indicate when the received S-bit pattern does not match the assumed internal multiframe alignment. This
mode will be used in applications where non-standard S-bit patterns exist. In such applications,
multiframe alignment information can be decoded externally by using the S-bits present at RLINK.
AVERAGE REFRAME TIME
NOTE:
1. Average Reframe Time is defined here as the average time it takes from the start of sync (rising edge
BACKPLANE INTERFACE USING DS2180A AND DS2176 Figure 22
S
FRAME
MODE
information is present. If no valid F
of RLOS) to the actual loading of the new alignment (on a multiframe edge) into the output receive
timing.
193S
193E
S
patterns must be correctly identified by the synchronizer before sync is declared. Clearing RCR.3
MIN
3.0
6.0
RCR.2=0
AVG
3.75
7.5
T
1
information, while multiframe sync will be established only if valid
T
Table 9
patterns (101010...) without cross-coupling the F
S
MAX
pattern is identified, the synchronizer will move to the F
4.5
9.0
27 of 35
MIN
13.0
6.5
RCR.2=1
AVG
7.25
14.5
MAX
16.0
8.0
S
pattern. Frame
UNITS
DS2180A
ms
T
T