PRELIMINARY
PM4318 OCTLIU
DATASHEET
PMC- 2001578
ISSUE 3
OCTAL E1/T1/J1 LINE INTERFACE DEVICE
frame pulse references, but need not be looped back to the ICLK_IN and IFP_IN inputs. (In
synchronous mode, the loopback is done internally and the ICLK_IN and IFP_IN inputs are
ignored.)
RSYNC_SEL[2:0]:
When the SBI2CLK input is tied low, the RSYNC Select register bits, RSYNC_SEL[2:0],
select the source of the RSYNC OCTLIU output.
When RSYNC_SEL[2:0] = “000”, octant #1 is selected as the source.
When RSYNC_SEL[2:0] = “001”, octant #2 is selected as the source.
When RSYNC_SEL[2:0] = “010”, octant #3 is selected as the source.
When RSYNC_SEL[2:0] = “011”, octant #4 is selected as the source.
When RSYNC_SEL[2:0] = “100”, octant #5 is selected as the source.
When RSYNC_SEL[2:0] = “101”, octant #6 is selected as the source.
When RSYNC_SEL[2:0] = “110”, octant #7 is selected as the source.
When RSYNC_SEL[2:0] = “111”, octant #8 is selected as the source.
ELST_SEL[2:0]:
When the SBI2CLK input is tied high, the Elastic Store Select register bits, ELST_SEL[2:0],
select the source of the clock and frame pulse used to read data from the Elastic Stores. The
clock and frame pulse are derived from one of the SBI tributaries de-mapped from the SBI
BUS and are output on ECLK and EFP respectively.
When ELST_SEL[2:0] = “000”, EXSBI link #1 is selected as the source.
When ELST_SEL[2:0] = “001”, EXSBI link #2 is selected as the source.
When ELST_SEL[2:0] = “010”, EXSBI link #3 is selected as the source.
When ELST_SEL[2:0] = “011”, EXSBI link #4 is selected as the source.
When ELST_SEL[2:0] = “100”, EXSBI link #5 is selected as the source.
When ELST_SEL[2:0] = “101”, EXSBI link #6 is selected as the source.
When ELST_SEL[2:0] = “110”, EXSBI link #7 is selected as the source.
When ELST_SEL[2:0] = “111”, EXSBI link #8 is selected as the source.
E1/T1B:
The global E1/T1B bit selects the operating mode of all eight of the OCTLIU octants. If
E1/T1B is logic 1, the 2.048 Mbit/s E1 mode is selected for all eight octants. If E1/T1B is
logic 0, the 1.544 Mbit/s T1 mode is selected for all eight octants.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
60
PMC [ PMC-SIERRA, INC ]
