71M6543GH MAXIM [Maxim Integrated Products], 71M6543GH Datasheet - Page 70
71M6543GH
Manufacturer Part Number
71M6543GH
Description
Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
1.71M6543GH.pdf
(157 pages)
- Current page: 70 of 157
- Download datasheet (3Mb)
71M6543F/H and 71M6543G/GH Data Sheet
Sometimes it is desirable to prevent the SPI interface from writing to arbitrary RAM locations and thus
disturbing MPU and CE operation. This is especially true in AFE applications. For this reason, the SPI
SAFE mode was created. In SPI SAFE mode, SPI write operations are disabled except for a 16 byte
transfer region at address 0x400 to 0x40F. If the SPI host needs to write to other addresses, it must use
the SPI_CMD register to request the write operation from the MPU. SPI SAFE mode is enabled by the
SPI_SAFE bit (I/O RAM 0x270C[3]).
Single-Byte Transaction
If a transaction is a single byte, the byte is interpreted as SPI_CMD. Regardless of the byte value,
single-byte transactions always update the SPI_CMD register and cause an SPI interrupt to be generated.
Multi-Byte Transaction
As shown in
and a sequence of data bytes. A multi byte transaction is three or more bytes.
70
Command Sequence
ADDR 1xxx xxxx STATUS
Byte0 ... ByteN
0xxx xxxx ADDR Byte0 ...
ByteN
Name
EX_SPI
SPI_CMD
SPI_E
IE_SPI
SPI_SAFE
(From Host) SPI_CSZ
(From Host) SPI_CSZ
(From 6543) SPI_DO
(From 6543) SPI_DO
(From Host) SPI_CK
(From Host) SPI_CK
SERIAL READ
SERIAL WRITE
(From Host) SPI_DI
(From Host) SPI_DI
Figure
x
Figure 23: SPI Slave Port - Typical Multi-Byte Read and Write operations
SFR FD[7:0]
SFR F8[7]
Location
270C[4]
270C[3]
A15
2701[7]
A15
0
0
23, multi-byte operations consist of a 16 bit address field, an 8 bit CMD, a status byte,
A14
A14
16 bit Address
16 bit Address
A1
A1
© 2008–2011 Teridian Semiconductor Corporation
Rst
HI Z
HI Z
0
–
1
0
0
15
15
Description
Read data starting at ADDR. ADDR is auto-incremented until SPI_CSZ
is raised. Upon completion, SPI_CMD (SFR 0xFD) is updated to 1xxx xxxx
and an SPI interrupt is generated. The exception is if the command
byte is 1000 0000. In this case, no MPU interrupt is generated and
SPI_CMD is not updated.
Write data starting at ADDR. ADDR is auto-incremented until SPI_CSZ is
raised. Upon completion, SPI_CMD is updated to 0xxx xxxx and an SPI
interrupt is generated. The exception is if the command byte is 0000
0000. In this case, no MPU interrupt is generated and SPI_CMD is not
updated.
A0
A0
Table 58: SPI Command Sequences
16
16
C7
C7
Wk
0
–
1
0
0
C6
C6
8 bit CMD
8 bit CMD
Table 59: SPI Registers
C5
R/W
R/W
R/W
R/W
C5
Dir
R
23
23
C0
Description
SPI interrupt enable bit.
SPI command. The 8-bit command from the bus master.
SPI port enable bit. It enables the SPI interface on pins
SEGDIO36 – SEGDIO39.
SPI interrupt flag. Set by hardware, cleared by writing a 0.
Limits SPI writes to SPI_CMD and a 16 byte region in
DRAM when set. No other write operations are permitted.
C0
ST7
ST7
24
24
ST6
ST6
Status Byte
Status Byte
ST5
ST5
ST0
ST0
31
31
32
32
D7
D7
x
D6
D6
DATA[ADDR]
DATA[ADDR]
D1
D1
D0
D0
39
39
D7
D7
40
40
Extended Read . . .
Extended Write . . .
DATA[ADDR+1]
D6
DATA[ADDR+1]
D6
D1
D1
47
D0
47
D0
v1.2
x
Related parts for 71M6543GH
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
LCC/M°/CIRCUITI INTEGRATI MAXIM
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
KIT/E/MAXIM ANALOG ESSENTIALS # COLLECTION OF PLUG-IN EVALUATION MODULES
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
Single +5V, fully integrated, 1.25Gbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Single +5V, fully integrated, 155Mbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
VRD11/VRD10, K8 Rev F 2/3/4-Phase PWM Controllers with Integrated Dual MOSFET Drivers
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Highly Integrated Level 2 SMBus Battery Chargers
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Current Monitor and Accumulator with Integrated Sense Resistor; ; Temperature Range: -40°C to +85°C
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
QFN 16/A°/AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
TDFN/A/65V, 1A, 600KHZ, SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED SWI
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
Integrated Temperature Controller f
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
EVALUATION KIT/2.4GHZ TO 2.5GHZ 802.11G/B RF TRANSCEIVER WITH INTEGRATED PA
Manufacturer:
Maxim Integrated Products