OM13006,598 NXP Semiconductors, OM13006,598 Datasheet - Page 145
![BOARD EVAL EM773 METER EU PLUG](/photos/38/74/387412/om13006_sml.jpg)
OM13006,598
Manufacturer Part Number
OM13006,598
Description
BOARD EVAL EM773 METER EU PLUG
Manufacturer
NXP Semiconductors
Type
Other Power Managementr
Specifications of OM13006,598
Design Resources
Plug Meter Schematics, Gerber Files USB Dongle Schematics, Gerber Files
Main Purpose
Power Management, Energy/Power Meter
Embedded
Yes, MCU, 32-Bit
Utilized Ic / Part
EM773FHN33,551
Interface Type
USB
Maximum Operating Temperature
+ 150 C
Operating Supply Voltage
1.8 V to 3.6 V
Product
Power Management Development Tools
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Primary Attributes
-
Secondary Attributes
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
EM773, OL2381
Other names
568-6681
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NXP Semiconductors
UM10415
User manual
11.7.3 SPI/SSP Data Register
11.7.4 SPI/SSP Status Register
11.7.5 SPI/SSP Clock Prescale Register
Software can write data to be transmitted to this register and read data that has been
received.
Table 140: SPI/SSP Data Register (SSP0DR - address 0x4004 0008) bit description
This read-only register reflects the current status of the SPI controller.
Table 141: SPI/SSP Status Register (SSP0SR - address 0x4004 000C) bit description
This register controls the factor by which the Prescaler divides the SPI peripheral clock
SPI_PCLK to yield the prescaler clock that is, in turn, divided by the SCR factor in the
SSPCR0 registers, to determine the bit clock.
Bit
15:0
31:16 -
Bit
0
1
2
3
4
31:5
Symbol
DATA
Symbol
TFE
TNF
RNE
RFF
BSY
-
All information provided in this document is subject to legal disclaimers.
Description
Write: software can write data to be sent in a future frame to this
register whenever the TNF bit in the Status register is 1,
indicating that the Tx FIFO is not full. If the Tx FIFO was
previously empty and the SPI controller is not busy on the bus,
transmission of the data will begin immediately. Otherwise the
data written to this register will be sent as soon as all previous
data has been sent (and received). If the data length is less than
16 bit, software must right-justify the data written to this register.
Read: software can read data from this register whenever the
RNE bit in the Status register is 1, indicating that the Rx FIFO is
not empty. When software reads this register, the SPI controller
returns data from the least recent frame in the Rx FIFO. If the
data length is less than 16 bit, the data is right-justified in this
field with higher order bits filled with 0s.
Reserved.
Description
Transmit FIFO Empty. This bit is 1 is the Transmit FIFO is
empty, 0 if not.
Transmit FIFO Not Full. This bit is 0 if the Tx FIFO is full, 1 if not. 1
Receive FIFO Not Empty. This bit is 0 if the Receive FIFO is
empty, 1 if not.
Receive FIFO Full. This bit is 1 if the Receive FIFO is full, 0 if
not.
Busy. This bit is 0 if the SPI controller is idle, 1 if it is currently
sending/receiving a frame and/or the Tx FIFO is not empty.
Reserved, user software should not write ones to reserved bits.
The value read from a reserved bit is not defined.
Rev. 1 — 10 September 2010
Chapter 11: EM773 SPI0 with SSP
UM10415
© NXP B.V. 2010. All rights reserved.
Reset Value
0x0000
-
Reset Value
1
0
0
0
NA
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