DS21Q58L+ Maxim Integrated Products, DS21Q58L+ Datasheet - Page 19

• Manufacturer Part Number: DS21Q58L+
• Description: IC TXRX E1 QUAD 3.3V 100LQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q58L+

• Function: Transceiver
• Interface: E1
• Number Of Circuits: 4
• Voltage - Supply: 3.14 V ~ 3.47 V
• Current - Supply: 230mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Includes: AIS Alarms Detector and Generator, Loopback Functions, PRBS Generator / Detector, Remote Detector and Generator
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -

Table 8-1. Sync/Resync Criteria
MULTIFRAME
Register Name:
Register Description:
Register Address:
Bit #
Name
Note: See
FRAME OR
NAME
AEBE
TFPT
TUA1
TSA1
TSIO
IFSS
TSiS
TSM
LEVEL
CRC4
CAS
FAS
Figure 24-9
IFSS
7
BIT
7
6
5
4
3
2
1
0
FAS present in frame N and N + 2,
and FAS not present in frame N + 1
Two valid MF alignment words found
within 8ms
Valid MF alignment word found and
previous time slot 16 contains code
other than all zeros
for more details about how the transmit control register affects DS21Q58 operation.
TFPT
Internal Frame-Sync Select
0 = TSYNC normal
1 = if TSYNC is in the INPUT mode (TSIO = 0), then TSYNC is internally
replaced by the recovered receive frame sync; the TSYNC pin is ignored
1 = if TSYNC is in the OUTPUT mode (TSIO = 1), then TSYNC outputs the
recovered multiframe frame sync
Transmit Time Slot 0 Pass Through
0 = FAS bits/Sa bits/remote alarm sourced internally from the TAF and TNAF
registers
1 = FAS bits/Sa bits/remote alarm sourced from TSER
Automatic E-Bit Enable
0 = E-bits not automatically set in the transmit direction
1 = E-bits automatically set in the transmit direction
Transmit Unframed All Ones
0 = transmit data normally
1 = transmit an unframed all-ones code
Transmit International Bit Select
0 = sample Si bits at TSER pin
1 = source Si bits from TAF and TNAF registers (In this mode, TCR.6 must be
set to 0)
Transmit Signaling All Ones
0 = normal operation
1 = force time slot 16 in every frame to all ones
TSYNC Mode Select
0 = frame mode (see the timing diagrams in Section 24.2)
1 = CAS and CRC4 multiframe mode (see the timing diagrams in Section 24.2)
TSYNC I/O Select
0 = TSYNC is an input
1 = TSYNC is an output
6
SYNC CRITERIA
TCR
Transmit Control Register
11 Hex
AEBE
5
TUA1
4
Three consecutive incorrect FAS received;
alternate (RCR1.2 = 1): if the above criteria
is met or three consecutive incorrect bit 2 of
non-FAS received
915 or more CRC4 codewords out of 1000
received in error
Two consecutive MF alignment words
received in error
19 of 74
FUNCTION
TSiS
3
RESYNC CRITERIA
TSA1
2
TSM
1
TSIO
4.2 and 4.3.2
ITU SPEC.
0
G.732 5.2
G.706
G.706
4.1.1
4.1.2