OM13006,598 NXP Semiconductors, OM13006,598 Datasheet - Page 88

• 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 11. Auto-baud a) mode 0 and b) mode 1 waveform
a. Mode 0 (start bit and LSB are used for auto-baud)
b. Mode 1 (only start bit is used for auto-baud)
16xbaud_rate
16xbaud_rate
U0ACR start
U1ACR start
rate counter
rate counter
UARTn RX
UARTn RX
9.6.15 UART Fractional Divider Register (U0FDR - 0x4000 8028)
The UART Fractional Divider Register (U0FDR) controls the clock pre-scaler for the baud
rate generation and can be read and written at the user’s discretion. This pre-scaler takes
the APB clock and generates an output clock according to the specified fractional
requirements.
Important: If the fractional divider is active (DIVADDVAL > 0) and DLM = 0, the value of
the DLL register must be 3 or greater.
6. The rate counter is loaded into U0DLM/U0DLL and the baud rate will be switched to
normal operation. After setting the U0DLM/U0DLL, the end of auto-baud interrupt
U0IIR ABEOInt will be set, if enabled. The U0RSR will now continue receiving the
remaining bits of the ”A/a" character.
start
start
16 cycles
16 cycles
bit0
bit0
All information provided in this document is subject to legal disclaimers.
bit1
bit1
Rev. 1 — 10 September 2010
Chapter 9: EM773 Universal Asynchronous Transmitter (UART)
start bit
start bit
bit2
bit2
'A' (0x41) or 'a' (0x61)
'A' (0x41) or 'a' (0x61)
bit3
bit3
bit4
bit4
16 cycles
bit5
bit5
bit6
bit6
LSB of 'A' or 'a'
LSB of 'A' or 'a'
bit7
bit7
parity stop
parity stop
UM10415
© NXP B.V. 2010. All rights reserved.
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