LVCS[4:0] bits indicate the amount of loop current
flowing. If the FDT fails to be set following an off-hook
request, the PDL bit in Register 6 must be set high for at
least 1 ms to reset the line side.
Another useful bit is the communication link error (CLE)
bit. The CLE bit indicates a timeout error for the
isolation link. This condition indicates a severe error in
programming or possibly a defective line-side chip.
4.27. Revision Identification
The Si3016 provides the system designer the ability to
determine the revision of the system-side module and/
or the Si3016. The REVA[3:0] bits identify the revision of
the system-side module. The REVB[3:0] and CBID bits
identify the revision of the Si3016. Table 12 lists revision
values for both chips.
Table 12. Revision Values
Revision
C
D
E
F
System-Side
Module
1010
—
—
—
Si3016
—
1100
1101
1110
Si3016
Rev. 1.0
25