DS21Q50L+ Maxim Integrated Products, DS21Q50L+ Datasheet - Page 53

• Manufacturer Part Number: DS21Q50L+
• Description: IC TXRX E1 QUAD 100-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q50L+

• 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: *
• 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): -

15.
There are two user-configurable output pins for each transceiver, OUTA and OUTB. These pins can be
programmed to output various clocks, alarms for line monitoring, logic 0 and 1 levels to control external
circuitry, or access transmit data between the framer and transmit line interface unit. OUTA and OUTB
can be active low or active high when operating as clock and alarm outputs. OUTA is active high if
OUTAC.4 =1 and active low if OUTAC.3 = 0. OUTB is active high if OUTBC.4 = 1 and active low if
OUTBC.4 = 0
configuration, the OUTA pin follows OUTAC.4 and the OUTB pin follows OUTBC.4.
The OUTAC register also contains a control bit for CMI operation. See Section
operation.
Register Name:
Register Description:
Register Address:
Bit
Name
NAME
TTLIE
CMIE
CMII
OA4
OA3
OA2
OA1
OA0
USER-CONFIGURABLE OUTPUTS
TTLIE
7
BIT
7
6
5
4
3
2
1
0
(Table
CMII
TTL Input Enable. When this bit is set, the receiver can accept TTL positive and negative
data at the RTIP and RRING inputs. The data is clocked in on the falling edge of MCLK.
CMI Invert. See Section
0 = CMI input data not inverted
1 = CMI input data inverted
CMI Enable. See Section
0 = CMI disabled
1 = CMI enabled
OUTA Control Bit 4. Inverts OUTA output.
OUTA Control Bit 3
OUTA Control Bit 2
OUTA Control Bit 1
OUTA Control Bit 0
6
OUTAC
OUTA Control Register
1A Hex
15-1). Mode 0000 is selected for controlling external circuitry. In this
CMIE
5
(Table
(Table
(Table
(Table
OA4
4
17
17
for details.
15-1)
15-1)
15-1)
15-1)
for details.
53 of 87
OA3
3
FUNCTION
OA2
2
OA1
1
16
OA0
for details about CMI
0