Cirrus Logic CS1631 User Manual
Page 50
CS1630/31
50
DS954F3
6.43 Configuration 62 (Config62)
–
Address 94
6.44 CRC Tag (CRC_TAG)
–
Address 102
CRC Tag register used by the communication system. To activate the use of this register the CRC bit must be
programmed to ‘1’ (see "Configuration 38 (Config38) – Address 70" on page 39). The correct CRC value is ob-
tained by computing the CRC for all the registers from address 0 through 95. This includes all the reserved set-
tings which have been factory programmed.
7
6
5
4
3
2
1
0
CH2_OFF2
CH2_OFF1
CH2_OFF0
CH1_OFF2
CH1_OFF1
CH1_OFF0
BST_LLP1
BST_LLP0
Number
Name
Description
[7:5]
CH2_OFF[2:0]
Sets fixed offset delay for ZCD comparator and other path delays in order to
get correct T2 measurements for channel 2. Adjusting CH2_OFF[2:0] correctly
is necessary to achieve accurate and predictable output currents across the
entire dimming range.The offset delay is given by:
[4:2]
CH1_OFF[2:0]
Sets fixed offset delay for ZCD comparator and other path delays in order to
get correct T2 measurements for channel 1. Adjusting CH1_OFF[2:0] correctly
is necessary to achieve accurate and predictable output currents across the
entire dimming range. The offset delay is given by:
[1:0]
BST_LLP[1:0]
Sets the minimum value V
LLPMin(th)
by which the boost output voltage needs to
be below the AC line voltage to trigger an LLP fault.
00 = 80V for 120V applications; 160V for 230V applications
01 = 40V for 120V applications; 80V for 230V applications
10 = 20V for 120V applications; 40V for 230V applications
11 = 10V for 120V applications; 20V for 230V applications
7
6
5
4
3
2
1
0
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
CH2_OFF[2:0] 50ns
CH1_OFF[2:0] 50ns