DS21Q42T+ Maxim Integrated Products, DS21Q42T+ Datasheet - Page 27
DS21Q42T+
Manufacturer Part Number
DS21Q42T+
Description
IC FRAMER ENHANCED T1 4X 128TQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS21Q42T.pdf
(116 pages)
Specifications of DS21Q42T+
Controller Type
T1 Framer
Interface
Parallel/Serial
Voltage - Supply
2.97 V ~ 3.63 V
Current - Supply
75mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
128-TQFP, 128-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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IDR: DEVICE IDENTIFICATION REGISTER (Address=0F Hex)
RCR1: RECEIVE CONTROL REGISTER 1 (Address=2B Hex)
LCVCRF
SYMBOL
SYMBOL
(MSB)
(MSB)
LCVCRF
T1E1
SYNCC
SYNCT
OOF1
OOF2
T1E1
ARC
ID3
ID2
ID1
ID0
ARC
0
POSITION
POSITION
RCR1.7
RCR1.6
RCR1.5
RCR1.4
RCR1.3
RCR1.2
IDR.7
IDR.3
IDR.1
IDR.2
IDR.0
OOF1
0
NAME AND DESCRIPTION
T1 or E1 Chip Determination Bit.
0=T1 chip
1=E1 chip
Chip Revision Bit 3. MSB of a decimal code that represents the
chip
Chip Revision Bit 2.
Chip Revision Bit 1.
Chip Revision Bit 0. LSB of a decimal code that represents the chip
revision.
NAME AND DESCRIPTION
Line Code Violation Count Register Function Select.
0 = do not count excessive zeros
1 = count excessive zeros
Auto Resync Criteria.
0 = Resync on OOF or RCL event
1 = Resync on OOF only
Out Of Frame Select 1.
0 = 2/4 frame bits in error
1 = 2/5 frame bits in error
Out Of Frame Select 2.
0 = follow RCR1.5
1 = 2/6 frame bits in error
Sync Criteria.
In D4 Framing Mode.
0 = search for Ft pattern, then search for Fs pattern
1 = cross couple Ft and Fs pattern
In ESF Framing Mode.
0 = search for FPS pattern only
1 = search for FPS and verify with CRC6
Sync Time.
0 = qualify 10 bits
1 = qualify 24 bits
revision.
OOF2
0
27 of 116
SYNCC
ID3
SYNCT
ID2
SYNCE
ID1
RESYNC
(LSB)
(LSB)
ID0
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