Cirrus Logic CS1631 - Manual (Page 48)

CS1630/31
48 DS954F3
6.39 Configuration 58 (Config58) – Address 90
6.40 Configuration 59 (Config59) – Address 91
7 6 5 4 3 2 1 0
SHUTDWN3 SHUTDWN2 SHUTDWN1 SHUTDWN0 LOW_SAT2 LOW_SAT1 LOW_SAT0 DIM_TEMP
Number Name Description
[7:4] SHUTDWN[3:0]
Configures the 8-bit code value corresponding to temperature threshold
Temp
Shutdown
. If the temperature exceeds this threshold, the device enters an
external overtemperature state and shuts down.
The wakeup temperature code is configured as an offset from the eOTP tem-
perature code and the shutdown temperature code is configured as an offset
from the wakeup temperature code; Temp
eOTP
< Temp
Wakeup
< Temp
Shutdown
[3:1] LOW_SAT[2:0]
Sets the lower saturation limit for the 8-bit temperature code provided to the
color system from the fast low pass filter before it is used for polynomial com-
putations.The lower saturation limit is given by:
[0] DIM_TEMP
Configures the external overtemperature protection (eOTP) dim with tempera-
ture feature, which decreases the second stage dim level once the tempera-
ture measured using the external NTC connected to pin eOTP exceeds the
temperature threshold set using eOTP[4:0], Temp
eOTP
(see “Configuration 59
(Config59) – Address 91” on page 48).
0 = Disable
1 = Enable
7 6 5 4 3 2 1 0
eOTP4 eOTP3 eOTP2 eOTP1 eOTP0 HI_SAT2 HI_SAT1 HI_SAT0
Number Name Description
[7:3] eOTP[4:0]
Configures 8-bit code value CODE
TEMPeOTP
corresponding to the tempera-
ture Temp
eOTP
set point at which the eOTP dim with temperature feature is
enabled.
[2:0] HI_SAT[2:0]
Sets the higher saturation limit for the 8-bit temperature code provided to the
color system before it is used for polynomial computations.
000 = CODE
TEMPShutdown
001 = 100
010 = 120
011 = 140
100 = 160
101 = 180
110 = 200
111 = 220
CODE
TEMPShutdown
CODE
TEMPWakeup
SHUTDWN  + [3:0] 4   =
LOW_SAT[2:0]  1  + 5 
CODE
TEMPeOTP
80 eOTP  + [4:0] 4   =