ds2143qn-t-r Maxim Integrated Products, Inc., ds2143qn-t-r Datasheet - Page 10

• Manufacturer Part Number: ds2143qn-t-r
• Description: Ds2143, Ds2143q E1 Controller
• Manufacturer: Maxim Integrated Products, Inc.

SYNC/RESYNC CRITERIA Table 2
RCR2: RECEIVE CONTROL REGISTER 2 (Address=11 Hex)
MULTIFRAME
(MSB)
FRAME OR
Sa8S
LEVEL
CRC4
CAS
FAS
SYMBOL
SCLKM
Sa8S
Sa7S
Sa6S
Sa5S
Sa4S
ESE
-
Sa7S
FAS present in frames N and N
+ 2, and FAS not present in
frame N + 1.
Two valid MF alignment words
found within 8 ms.
Valid MF alignment word
found and previous time slot 16
contains code other than all 0s.
POSITION
RCR2.7
RCR2.6
RCR2.5
RCR2.4
RCR2.3
RCR2.2
RCR2.1
RCR2.0
SYNC CRITERIA
Sa6S
NAME AND DESCRIPTION
Sa8 Bit Select. Set to 1 to report the Sa8 bit at the RLINK pin;
set to 0 to not report the Sa8 bit.
Sa7 Bit Select. Set to 1 to report the Sa7 bit at the RLINK pin;
set to 0 to not report the Sa7 bit.
Sa6 Bit Select. Set to 1 to report the Sa6 bit at the RLINK pin;
set to 0 to not report the Sa6 bit.
Sa5 Bit Select. Set to 1 to report the Sa5 bit at the RLINK pin;
set to 0 to not report the Sa5 bit.
Sa4 Bit Select. Set to 1 to report the Sa4 bit at the RLINK pin;
set to 0 to not report the Sa4 bit.
SYSCLK Mode Select.
0 = if SYSCLK is 1.544 MHz.
1 = if SYSCLK is 2.048 MHz.
Elastic Store Enable.
0 = elastic store is bypassed.
1 = elastic store is enabled.
Not Assigned. Should be set to 0 when written to.
Sa5S
10 of 44
Three consecutive incorrect FAS
received.
Alternate (RCR1.2=1) the above
criteria is met or three consecutive
incorrect bit 2 of non-FAS received.
915 or more CRC4 code words out
of 1000 received in error.
Two consecutive MF alignment
words received in error.
Sa4S
RESYNC CRITERIA
SCLKM
ESE
DS2143/DS2143Q
G.706
4.1.1
4.1.2
G.706
4.2
4.3.2
G.732
5.2
(LSB)
SPEC.
ITU
-