Texas Instruments TLC6C5712-Q1, User Manual

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REF OUT
OUT
REF
V K
DC 1
I
R 256
u
u
GUI Function
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The DOT CORRECTION SETTING is used for setting the output current for each channel. Each channel
has an internal 8-bit linear current DAC for individual dot correction control. Use
Equation 1 to set the
output current.
where
• V
REF
is the reference voltage, 1.229 V
• K
OUT
is the output current to I
REF
current ratio, 500
• R
REF
is the reference resistor
• DC is the DOT correction setting value (1)
Figure 5. General Function I
PWM FAULT MASK is used to control the PWM fault mask. A setting of 1 indicates that the PWM fault is
masked and therefore the fault will not be reported to the status register shown in
Figure 7 . A setting of 0
indicates that the PWM fault is unmasked and therefore when a PWM fault occurs, the fault will be
reported to PWM status register.
The ERR MASK field is used to control the ERROR mask. A setting of 1 indicates that the error is masked
and therefore the error is not reported to the ERROR indicator shown in
Figure 8 . A setting of 0 indicates
that the error is unmasked and therefore, when an error occurs, the error is reported to the ERROR
indicator. When users need the error indicator to report the fault, the fault mask for each channel (such as
PWM fault mask, SHORT GND MASK, and so on) should not be masked. When D13 on the EVM is on,
users can click the READ ALL to get the fault.
The MISC_CMD field contains fives commands. The D_OFD command disables the off state diagnostic. If
the LED off-state diagnostic is not needed, change the register value to 1. The ADJ_SH command detects
the adjacent pin short fault. Users can implement the detection by setting the register value to 1. Because
the register value resets to 0 after the device finishes the detection, users must change the ADJ_SH value
back to 0 after the detection is complete. The S_SR command is used to control the output slew rate. A
setting of 1 indicates the slow slew rate. The F_ERR command forces the ERROR output state. When the
register is 1, the ERR output is pulled low even the system has no error. The WLS command configures
the weak-load supply-detection threshold. A setting of 1 indicates that the detection threshold is 2.77 V. A
setting of 0 indicates that the detection threshold is 4.2 V.
8 TLC6C5712-Q1 Evaluation Module SLVUAE6A – January 2015 – Revised July 2015
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