DS21Q59LN+ Maxim Integrated Products, DS21Q59LN+ Datasheet - Page 53

• Manufacturer Part Number: DS21Q59LN+
• Description: IC TXRX E1 QUAD 100-LQFP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of DS21Q59LN+

• Number Of Drivers/receivers: 4/4
• Protocol: E1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Dc: 1136
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS21Q59 Quad E1 Transceiver
Transmit and receive CMI is enabled through OUTAC.7. When this register bit is set, the TTIP pin outputs CMI-
coded data at normal TTL-type levels. This signal can be used to directly drive an optical interface. When CMI is
enabled, the user can also use HDB3 coding.
When this register bit is set, the RTIP pin becomes a unipolar CMI input. The CMI signal is processed to extract
and align the clock with data. The bipolar code-violation counter counts CVs in the CMI signal. CVs are defined as
consecutive 1s of the same polarity, as shown in
Figure
22-2. If HDB3 precoding is enabled, the CVs generated by
HDB3 are not counted as errors.
Figure 22-2. Example of CMI Code Violation
CLOCK
1
1
0
1
0
0
1
DATA
CMI
CODE VIOLATION
53 of 76