Datasheet

DS21352/DS21552
40 of 137
CCR5: COMMON CONTROL REGISTER 5 (Address=19 Hex)
(MSB) (LSB)
TJC LLB LIAIS TCM4 TCM3 TCM2 TCM1 TCM0
SYMBOL POSITION NAME AND DESCRIPTION
TJC CCR5.7
Transmit Japanese CRC6 Enable.
0 = use ANSI/AT&T/ITU CRC6 calculation (normal operation)
1 = use Japanese standard JT–G704 CRC6 calculation
LLB CCR5.6 Local Loopback.
0 = loopback disabled
1 = loopback enabled
LIAIS CCR5.5
Line Interface AIS Generation Enable.
0 = allow normal data from TPOSI/TNEGI to be transmitted at TTIP and TRING
1 = force unframed all ones to be transmitted at TTIP and TRING
TCM4 CCR5.4 Transmit Channel Monitor Bit 4. MSB of a channel decode that determines which
transmit channel data will appear in the TDS0M register. See Section 9 for details.
TCM3 CCR5.3
Transmit Channel Monitor Bit 3.
TCM2 CCR5.2
Transmit Channel Monitor Bit 2.
TCM1 CCR5.1
Transmit Channel Monitor Bit 1.
TCM0 CCR5.0 Transmit Channel Monitor Bit 0. LSB of the channel decode.