DS2181AQ/T&R Maxim Integrated Products, DS2181AQ/T&R Datasheet - Page 12

• Manufacturer Part Number: DS2181AQ/T&R
• Description: IC TXRX CEPT PRIMARY RATE 44PLCC
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of DS2181AQ/T&R

• Number Of Drivers/receivers: 1/1
• Protocol: CEPT
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 44-LCC, 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

FIXED FRAME RESYNC CRITERIA
When enabled via RCR.1, the device will automatically initiate frame search whenever the frame
alignment word is received in error three consecutive times.
FIXED CAS MULTIFRAME RESYNC CRITERIA
When enabled via RCR.1, the device will automatically initiate frame search whenever two consecutive
CAS multiframe alignment words are received in error.
FIXED CRC4 RESYNC CRITERIA
If CCR.1=1 or if the TEST pin is tied high, then the DS2181A will initiate the resync at the FAS level if
915 or more CRC4 words out of 1000 are received in error.
CAS SIGNALLING SOURCE
CAS applications sample signaling data at TSER when TCR.6 = 0; an on-chip data multiplexer accepts
channel-associated data input at TSD when TCR.6 = 1. The data multiplexer must be disabled (TCR.6 =
0) when the CCS mode is enabled (TCR.5 = 1).
TSD INPUT TIMING (TCR.6 = 1; TCR.5 = 0) Table 6
NOTE:
1. A, B, C and D data is sampled on falling edges of TCLK during bit times 5, 6, 7 and 8 of timeslots
FRAME #
indicated.
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
DATA SAMPLED AT TSD
TIMESLOT SIGNALING
11, 28
12, 29
13, 30
14, 31
1, 18
2, 19
3, 20
4, 21
5, 22
6, 23
7, 24
8, 25
9, 26
0, 27
17
15
12 of 32
DS2181A