Rainbow Electronics DS3170 - Manual (Page 18)

DS3170 DS3/E3 Single-Chip Transceiver
18 of 233
6 MAJOR OPERATIONAL MODES
The major operational modes are determined by the FM[2:0] framer mode bits, as well as a few other control bits.
Unused features are powered down and the data paths are held in reset. The configuration registers of the unused
features can be written to and read from. Some of the IO pins change functions in different operational modes. The
line interface operational modes are determined by the LM[2:0] bits.
6.1 DS3/E3 Framed LIU Mode
FRAME MODE FM[2:0]
DS3 C-bit Framed 000
DS3 M23 Framed 001
E3 G.751 Framed 010
E3 G.832 Framed 011
LIU MODE
LM[2:0] TZSD & RZSD
TLEN
PORT.CR2
JA Off, B3ZS or HDB3 001 0 0
JA RX, B3ZS or HDB3 010 0 0
JA TX, B3ZS or HDB3 011 0 0
JA Off, AMI 001 1 0
JA RX, AMI 010 1 0
JA TX, AMI 011 1 0