cs5461 Cirrus Logic, Inc., cs5461 Datasheet - Page 30

• Manufacturer Part Number: cs5461
• Description: Single-phase, Bidirectional Power/energy Ic
• Manufacturer: Cirrus Logic, Inc.

6.1.7 Register Read/Write
The Read/Write informs the state machine that a register access is required. During a read operation, the addressed
register is loaded into the device’s output buffer and clocked out by SCLK. During a write operation, the data is
clocked into the input buffer and, and all 24 bits are transferred to the addressed register on the 24
30
B7
0
W/R
RA[4:0]
Address
† These registers are for internal use only. For proper device operation, the user must not attempt to write
W/R
B6
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
to these registers.
RA4
B5
0 = Read register
1 = Write register
Write/Read control
Register address bits (bits 1 through 5) of the read/write command.
RA[4-0]
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
RA3
B4
RA2
B3
Abbreviation
Config
I
I
V
V
Cycle Count
PulseRateE
I
V
P
P
I
V
TBC
P
Status
I
V
PulseRateF
T
Res
PW
Res
VSAG
VSAG
Res
Mask
Res
Ctrl
Res
Res
Res
DCoff
gn
RMS
ACoff
DCoff
gn
Avg
RMS
off
ACoff
RA1
B2
Level
Duration
RA0
B1
Sets the EOUT/EDIR energy-to-frequency output pulse rate.
Name/Description
Configuration Register
Current Offset Register
Current Gain Register
Voltage Offset Register
Voltage Gain Register
Number of A/D conversions used in one computation cycle (N)).
Instantaneous Current Register (last current value)
Instantaneous Voltage Register (last voltage value)
Instantaneous Power Register (Last Power value)
Average Power Register (avg. power over last computation cycle)
RMS Current Register (RMS value over last comp. cycle)
RMS Voltage Register (RMS value over last comp. cycle)
Timebase Calibration Register
Power Offset Calibration Register
Status Register (Write of ‘1’ to status bit will clear the bit.)
AC (RMS) Current Offset Register
AC (RMS) Voltage Offset Register
Sets the FOUT power-to-frequency output pulse rate.
Temperature Register
Reserved †
Pulse width register for mechanical counter output mode
Voltage Sag Level Threshold Register.
Voltage Sag Duration Register.
Reserved †
Mask Register
Reserved †
Control Register
Reserved †
Reserved †
Reserved †
Reserved †
B0
0
th
SCLK.
CS5461
DS546F2