CS5464-IS Cirrus Logic Inc, CS5464-IS Datasheet - Page 20

• Manufacturer Part Number: CS5464-IS
• Description: Other Power Management 3-Ch Single Phase Power/Energy IC
• Manufacturer: Cirrus Logic Inc

Specifications of CS5464-IS

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

lists the functions of E3 as controlled by E3MODE[1:0]
When both E2MODE bits are high, the E1MODE bits
are enabled, allowing active, apparent, reactive, or
wideband reactive energy for both energy channels to
be output on E1 and E2. Table 6 lists the functions of E1
and E2 with E1MODE enabled.
When E1MODE bits are enabled, the E3 pin outputs ei-
ther the power fail monitor status, or the sign of the E1
and E2 outputs. Table 7 list the functions of the E3 pin
using E3MODE[1:0] in the Modes register when
E1MODE is enabled .
20
in the Modes register when E1MODE is not enabled.
E3MODE1 E3MODE0
E1MODE1 E1MODE0
E3MODE1 E3MODE0
0
0
1
1
0
0
1
1
0
0
1
1
Table 7. E3 Pin with E1MODE enabled
Table 5. E3 Pin Configuration
Table 6. E1 / E2 Modes
0
1
0
1
0
1
0
1
0
1
0
1
Wideband Reactive
Power Fail Monitor
Power Fail Monitor
Apparent Energy
Apparent Energy
Reactive Energy
Reactive Energy
E1 / E2 outputs
Active Energy
Voltage Sign
Energy Sign
E3 output
E3 output
not used
not used
6.8 No Load Threshold
The No Load Threshold register ( Load
zero out the contents of E
their magnitude is less than the Load
6.9 Energy Pulse Width
Note: Energy Pulse Width ( PulseWidth ) only applies to
E1, E2, or E3 pins that are configured to output pulses.
When any are configured to output steady-state signals,
such as voltage sign, energy channel in use, power fail
monitor, or energy sign, pulse widths and output rates
do not apply.
The pulse width time (t
in the PulseWidth register which is an integer multiple of
the sample or output word rate (OWR). At OWR of
4000 Hz (a period of 250 uS) t
By default, PulseWidth is set to 1.
6.10 Energy Pulse Rate
The full-scale pulse frequency of enabled E1, E2, E3
pins is the PulseRate x output word rate (OWR)/2. The
actual pulse frequency is the full-scale pulse frequency
multiplied by the pulse register’s ( E
Q
Example:
If the output word rate (OWR) is 4000 Hz, and the
PulseRate is set to 0.05, the full-rate pulse frequency is
0.05 x 4000 / 2 = 100 Hz. If the E
E1, is 0.4567, the pulse output rate on E1 will be
100 Hz x 0.4567 = 45.67 Hz.
6.11 Voltage Sag/Current Fault Detection
Voltage sag detection is used to determine when aver-
aged voltage falls below a predetermined level for a
specified interval of time. Current fault detection deter-
mines when averaged current falls below a predeter-
mined level for a specified interval of time.
The specified interval of time (duration) is set by the val-
ue in the V1Sag
( I2Fault
fault) disables the detect feature for the given channel.
The value is in output word rate (OWR) samples. The
predetermined level is set by the values in the
V1Sag
( I2Fault
Since the values of V1 and V2 come from the same in-
put, only one voltage sag detector is necessary.
PULSE
LEVEL
LEVEL
) value.
DUR
) registers. Setting any of these to zero (de-
) registers.
( V2Sag
DUR
pw
LEVEL
) in
( V2Sag
PULSE
Figure
)
pw
and Q
DUR
= PulseWidth x 250uS.
PULSE
and
2, is set by the value
) and I1Fault
MIN
PULSE
PULSE
register, driving
MIN
register value.
CS5464
) is used to
I1Fault
registers if
, S
DS682F1
PULSE
LEVEL
DUR
,