OM13006,598 NXP Semiconductors, OM13006,598 Datasheet - Page 149

• 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

NXP Semiconductors
UM10415
User manual
Fig 31. SPI frame format with CPOL=0 and CPHA=0 (a) Single and b) Continuous Transfer)
a. Single transfer with CPOL=0 and CPHA=0
b. Continuous transfer with CPOL=0 and CPHA=0
SSEL
MOSI
MISO
SCK
11.8.2.1 Clock Polarity (CPOL) and Phase (CPHA) control
11.8.2.2 SPI format with CPOL=0,CPHA=0
11.8.2 SPI frame format
MSB
MSB
Both the SSP and the off-chip serial slave device then clock each data bit into their serial
shifter on the falling edge of each CLK. The received data is transferred from the serial
shifter to the receive FIFO on the first rising edge of CLK after the LSB has been latched.
The SPI interface is a four-wire interface where the SSEL signal behaves as a slave
select. The main feature of the SPI format is that the inactive state and phase of the SCK
signal are programmable through the CPOL and CPHA bits within the SSPCR0 control
register.
When the CPOL clock polarity control bit is LOW, it produces a steady state low value on
the SCK pin. If the CPOL clock polarity control bit is HIGH, a steady state high value is
placed on the CLK pin when data is not being transferred.
The CPHA control bit selects the clock edge that captures data and allows it to change
state. It has the most impact on the first bit transmitted by either allowing or not allowing a
clock transition before the first data capture edge. When the CPHA phase control bit is
LOW, data is captured on the first clock edge transition. If the CPHA clock phase control
bit is HIGH, data is captured on the second clock edge transition.
Single and continuous transmission signal sequences for SPI format with CPOL = 0,
CPHA = 0 are shown in
SSEL
MOSI
MISO
SCK
4 to 16 bits
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 10 September 2010
MSB
LSB
LSB
MSB
Figure
Q
31.
4 to 16 bits
MSB
MSB
LSB
LSB
Chapter 11: EM773 SPI0 with SSP
Q
4 to 16 bits
UM10415
© NXP B.V. 2010. All rights reserved.
LSB
LSB
Q
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