OM13006,598 NXP Semiconductors, OM13006,598 Datasheet - Page 91

• 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
9.6.15.1.1 Example 1: UART_PCLK = 14.7456 MHz, BR = 9600
9.6.15.1.2 Example 2: UART_PCLK = 12 MHz, BR = 115200
9.6.16 UART Transmit Enable Register (U0TER - 0x4000 8030)
Table 106. Fractional Divider setting look-up table
According to the provided algorithm DL
= 96. Since this DL
DLL = 96.
According to the provided algorithm DL
6.51. This DL
parameter. Using an initial estimate of FR
is recalculated as FR
and 1.9, DIVADDVAL and MULVAL values can be obtained from the attached look-up
table.
The closest value for FRest = 1.628 in the look-up
equivalent to DIVADDVAL = 5 and MULVAL = 8.
Based on these findings, the suggested UART setup would be: DLM = 0, DLL = 4,
DIVADDVAL = 5, and MULVAL = 8. According to
115384. This rate has a relative error of 0.16% from the originally specified 115200.
In addition to being equipped with full hardware flow control (auto-cts and auto-rts
mechanisms described above), U0TER enables implementation of software flow control.
When TxEn = 1, UART transmitter will keep sending data as long as they are available. As
soon as TxEn becomes 0, UART transmission will stop.
FR
1.000
1.067
1.071
1.077
1.083
1.091
1.100
1.111
1.125
1.133
1.143
1.154
1.167
1.182
1.200
1.214
1.222
1.231
DivAddVal/
MulVal
0/1
1/15
1/14
1/13
1/12
1/11
1/10
1/9
1/8
2/15
1/7
2/13
1/6
2/11
1/5
3/14
2/9
3/13
est
All information provided in this document is subject to legal disclaimers.
is not an integer number and the next step is to estimate the FR
est
est
Rev. 1 — 10 September 2010
Chapter 9: EM773 Universal Asynchronous Transmitter (UART)
is an integer number, DIVADDVAL = 0, MULVAL = 1, DLM = 0, and
FR
1.250
1.267
1.273
1.286
1.300
1.308
1.333
1.357
1.364
1.375
1.385
1.400
1.417
1.429
1.444
1.455
1.462
1.467
= 1.628. Since FRest = 1.628 is within the specified range of 1.1
DivAddVal/
MulVal
1/4
4/15
3/11
2/7
3/10
4/13
1/3
5/14
4/11
3/8
5/13
2/5
5/12
3/7
4/9
5/11
6/13
7/15
est
est
est
= PCLK/(16 x BR) = 14.7456 MHz / (16 x 9600)
= PCLK/(16 x BR) = 12 MHz / (16 x 115200) =
= 1.5 a new DL
FR
1.500
1.533
1.538
1.545
1.556
1.571
1.583
1.600
1.615
1.625
1.636
1.643
1.667
1.692
1.700
1.714
1.727
1.733
Equation
Table 106
DivAddVal/
MulVal
1/2
8/15
7/13
6/11
5/9
4/7
7/12
3/5
8/13
5/8
7/11
9/14
2/3
9/13
7/10
5/7
8/11
11/15
3, the UART’s baud rate is
est
is FR = 1.625. It is
= 4 is calculated and FR
FR
1.750
1.769
1.778
1.786
1.800
1.818
1.833
1.846
1.857
1.867
1.875
1.889
1.900
1.909
1.917
1.923
1.929
1.933
UM10415
© NXP B.V. 2010. All rights reserved.
DivAddVal/
MulVal
3/4
10/13
7/9
11/14
4/5
9/11
5/6
11/13
6/7
13/15
7/8
8/9
9/10
10/11
11/12
12/13
13/14
14/15
91 of 310
est