EVAL-ADE7878EBZ Analog Devices Inc, EVAL-ADE7878EBZ Datasheet - Page 17

• Manufacturer Part Number: EVAL-ADE7878EBZ
• Description: Energy Meter Eval. Board
• Manufacturer: Analog Devices Inc

Specifications of EVAL-ADE7878EBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Energy Meter
• Kit Application Type: Data Converter
• Silicon Core Number: ADE7878
• Features: External Transducers, LED Indicators, Logic Outputs
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4472972; Q4684026; Q5015773

Preliminary Technical Data
0
1
2
Table 8. Reset—Answer from Microcontroller to PC
Byte
0
1
Table 9. I
Message from PC to Microcontroller
Byte
0
1
2
Table 10. I
Answer from Microcontroller to PC
Byte
0
1
Table 11. Data Write—Message from PC to Microcontroller
Byte
0
1
2
3
4
5
6
…
N+2
N+3
Table 12. Data Write—Answer from Microcontroller to PC
Byte
0
1
Table 13. Data Read—Message from PC to Microcontroller
Byte
0
1
2
3
4
Table 14. Data Read—Answer from Microcontroller to PC
Byte
‘C’=0x43 - toggle RESET pin and keep it low for at least
10msec
N=1
Data Byte 0: this byte can have any value
‘R’=0x52
‘~’=0x7E to acknowledge the operation was successful
‘D’=0x44 - Select I2C, SPI and initialize them. Then sets
CONFIG2[7:0]=0x2 to lock in the port choice. When I2C is
selected, enable also SSP0 of LPC2368 (used for HSDC)
N=1
Data Byte 0: 0x00=I2C, 0x01=SPI
‘E’=0x45
N= Number of bytes transmitted after this byte. N can be
1+2,2+2, 4+2 or 6+2
MS byte of the address
LS byte of the address
Data byte N-3 (MS)
Data byte N-4
Data byte N-5
…
Data byte 1
Data byte 0 (LS)
‘F’=0x46
N= Number of bytes transmitted after this byte. N=3
MS byte of the address
LS byte of the address
M=number of bytes to be read from the address above.
M can be 1, 2, 4 or 6
Description
Description
Description
Description
Description
‘R’=0x52
‘~’=0x7E to acknowledge the operation was successful
‘R’=0x52
‘~’=0x7E to acknowledge the operation was successful
Description
Description
2
C/SPI Select (Configure Communication)—
2
C/SPI Select (Configure Communication)—
Rev. PrB | Page 17 of 30
0
1
2
3
4
5
6
7
8
Table 15. Interrupt Setup—Message from PC to
Microcontroller
Byte
0
1
2
3
4
5
6
7
8
9
Table 16. Interrupt Setup—Message from Microcontroller to PC
Byte
0
1
2
3
4
The microcontroller executes the following operations once
Interrupt Setup command is received:
- Reads STATUS0[31:0] or STATUS1[31:0] (depending on the
address received from PC) and if it shows an interrupt already
triggered (one of its bits equal to 1), it erases it by writing it
back.
- Writes MASK0[31:0] or MASK1[31:0] with the value received
from PC.
- Waits for the interrupt to be triggered. If the wait gets more
than the time out specified in the command, then sends back
0xFFFFFFFF.
- If the interrupt is triggered, it reads STATUS0[31:0] or
STATUS1[31:0] and then writes it back to clear it. The value
‘R’=0x52
MS byte of the address
LS byte of the address
Byte 5, 3,1 or 0 (MS)read at the location indicated by
address. The location may contain 6, 4, 2 or 1 bytes. The
content is transmitted MS byte first.
Byte 4, 2 or 0
Byte 3, 1
Byte 2, 0
Byte 1
Byte 0
Description
‘J’=0x4A
N=8 - Number of bytes transmitted after this byte.
MS byte of MASK1[31:0] or MASK0[31:0] address
LS byte of MASK1[31:0] or MASK0[31:0] address
Byte3 of the desired value of MASK0[31:0] or
MASK1[31:0]
Byte2
Byte1
Byte0
Time Out Byte - Time the MCU must wait for the interrupt
to be triggered. It is measured in 3sec increments.
Time Out Byte (TOB)=0 means the timeout is disabled
IRQ timer - Time the MCU leaves the
before writing back to clear the interrupt flag. It is
measured in 10msec increments.
Timer=0 means the timeout is disabled
Description
‘R’=0x52
Byte3 of STATUS0[31:0] or STATUS1[31:0]
If the program waited for TOB*3sec and the interrupt was
not triggered, then the Byte3=Byte2=Byte1=Byte0=0xFF
Byte2 of STATUS0[31:0] or STATUS1[31:0]
Byte1 of STATUS0[31:0] or STATUS1[31:0]
Byte0 of STATUS0[31:0] or STATUS1[31:0]
EVAL-ADE7878EB
IRQx
, x=0,1pin low