DS21Q58L+ Maxim Integrated Products, DS21Q58L+ Datasheet - Page 43

• 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): -

Bit #
Name
Register Name:
Register Description:
Register Address:
19.
On the receiver, the RAF and RNAF registers always report the data as it is received in the additional (Sa) and
international (Si) bit locations. The RAF and RNAF registers are updated with the setting of the receive align frame
bit in status register 2 (SR2.6). The host can use the SR2.6 bit to know when to read the RAF and RNAF registers.
It has 250ms to retrieve the data before it is lost.
On the transmitter, data is sampled from the TAF and TNAF registers with the setting of the transmit align frame bit
in status register 2 (SR2.3). The host can use the SR2.3 bit to know when to update the TAF and TNAF registers. It
has 250ms to update the data or else the old data is retransmitted. Data in the Si bit position is overwritten if either
the framer is programmed (1) to source the Si bits from the TSER pin, (2) in the CRC4 mode, or if the framer (3)
has automatic E-bit insertion enabled. Data in the Sa bit position is overwritten if any of the TCR.3–TCR.7 bits are
set to 1. Please see the TCR register descriptions for more details.
Register Name:
Register Description:
Register Address:
Bit #
Name
NAME
NAME
Sa4
Sa5
Sa6
Sa7
Sa8
Si
0
0
1
1
0
1
1
Si
A
1
ADDITIONAL (Sa) AND INTERNATIONAL (Si) BIT OPERATION
Si
BIT
BIT
7
Si
7
7
5
4
3
2
1
0
6
7
6
5
4
3
2
1
0
International Bit
Frame Alignment Signal Bit
Frame Alignment Signal Bit
Frame Alignment Signal Bit
Frame Alignment Signal Bit
Frame Alignment Signal Bit
Frame Alignment Signal Bit
Frame Alignment Signal Bit
International Bit
Frame Nonalignment Signal Bit
Remote Alarm
Additional Bit 4
Additional Bit 5
Additional Bit 6
Additional Bit 7
Additional Bit 8
6
0
6
1
RNAF
Receive Nonalign Frame Register
29 Hex
RAF
Receive Align Frame Register
28 Hex
A
5
5
0
Sa4
4
4
1
FUNCTION
FUNCTION
Sa5
43 of 74
3
1
3
Sa6
2
0
2
Sa7
1
1
1
DS21Q58 E1 Quad Transceiver
Sa8
0
1
0