LTC2970-1 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC2970-1' PDF : 36 Pages View PDF
LTC2970/LTC2970-1
U
OPERATIO
3. Register Command Set (Cont.)
COMMAND FUNCTION DESCRIPTION
CH1_A_SERVO()
CH1_A Voltage Servo Control Register
CH1_A_IDAC()
CH1_A IDAC Control Register
*CH1_A_IDAC_TRACK() CH1_A IDAC Track Control Register
*CH1_A_DELAY_TRACK() CH1_A IDAC Track Delay Register
CH1_B_ADC()
CH1_B ADC Conversion Result Register
CH1_B_OV()
CH1_B Over-Voltage Monitor Control Register
CH1_B_UV()
CH1_B Under-Voltage Monitor Control Register
TEMP_ADC()
Temperature ADC Conversion Result Register
RESERVED()
All other commands are reserved for future expansion and should not be
written or read.
*LTC2970-1 Only. LTC2970 will not acknowledge these commands.
R/W
Read/Write
Read/Write
Read/Write
Read/Write
Read Only
Read/Write
Read/Write
Read/Write
Read/Write
DATA
LENGTH
16 Bits
16 Bits
16 Bits
16 Bits
16 Bits
16 Bits
16 Bits
16 Bits
16 Bits
COMMAND
BYTE VALUE
‘h53
‘h54
‘h55
‘h56
‘h58
‘h59
‘h5A
‘h68
‘hXX
4. Detailed I2C Command Register Descriptions
FAULT: Instantaneous Fault Register – Read
BIT(s) SYMBOL
OPERATION
b[0] Fault_ch0_a_ov
0 = The associated channel is clear of
b[1] Fault_ch0_a_uv
instantaneous faults.
b[2]
Fault_ch0_a_idac
1 = The associated channel has an
instantaneous fault.
b[3] Fault_ch0_b_ov
The reported faults are instantaneous
b[4] Fault_ch0_b_uv
and not latched. When used in
b[5] Fault_ch1_a_ov
conjunction with latched faults they
b[6] Fault_ch1_a_uv
may indicate faults that are transient in
nature.
b[7] Fault_ch1_a_idac
b[8] Fault_ch1_b_ov
b[9] Fault_ch1_b_uv
b[10] Fault_vdd_ov
b[11] Fault_vdd_uv
b[12] Fault_v12_ov
b[13] Fault_v12_uv
b[15:14] Reserved
Always Returns 0
16
FAULT_EN: Fault Enabling Register – Read/Write
BIT(s) SYMBOL
OPERATION
b[0] Fault_en_ch0_a_ov 0 = The associated bit in the
b[1]
Fault_en_ch0_a_uv
FAULT_LA register will always be 0.
(default)
b[2] Fault_en_ch0_a_idac
1 = Instantaneous faults reported in
b[3]
Fault_en_ch0_b_ov the FAULT register will set associated
b[4]
Fault_en_ch0_b_uv bit in the FAULT_LA register.
b[5] Fault_en_ch1_a_ov
b[6] Fault_en_ch1_a_uv
b[7] Fault_en_ch1_a_idac
b[8] Fault_en_ch1_b_ov
b[9] Fault_en_ch1_b_uv
b[10] Fault_en_vdd_ov
b[11] Fault_en_vdd_uv
b[12] Fault_en_v12_ov
b[13] Fault_en_v12_uv
b[14]
Fault_en_ch0_a_servo 0 = Do not re-servo CH0_A in
response to instantaneous OV or UV
fault.
b[15]
Fault_en_ch1_a_servo
1 = Repeat a one time servo of CH0_A
in response to instantaneous OV or
UV fault. CH0_A must have servo
operation enabled with Ch0_a_idac_
servo_repeat set low, and Adc_mon_
ch0_a set high.
0 = Do not re-servo CH1_A in
response to instantaneous OV or UV
fault.
1 = Repeat a one time servo of CH1_A
in response to instantaneous OV or
UV fault. CH1_A must have servo
operation enabled with Idac_ch1_a_
servo_repeat set low, and Adc_mon_
ch1_a set high.
29701fc
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