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NXP Semiconductors
Table 316
HSU_RX/TX_CORRECT for various baud rates when sample clock is 27.12 MHz.
Table 316. HSU baud rates for 27.12 MHz+/-1.5 % sample clock
Bit rate (kBaud)
9.6
19.2
38.4
57.6
115.2
230.4
460.8
921.6
1288
2400
3500
3750
4000
5000
[1]
UM10858
User manual
COMPANY PUBLIC
Fig 62. HS UART bit correction
shows the programming values of HSU_RX/TX_DIVIDER and
HSU_RX_DIVIDE
R
2825
1412
706
470
235
117
58
29
21
11
[1]
7
[1]
7
[1]
6
[1]
5
Baud rates above 3.4 Mbit/s depend on the clock accuracy. It is suggested to use only baud rates with a
ratio between sample clock and UART clock greater than 8.
All information provided in this document is subject to legal disclaimers.
Rev. 1.4 — 14 May 2018
HSU_TX_DIVIDE
HSU_RX_CLK_C
R
ORRECT
0
000_0000_0000
0
000_0000_0000
0
000_0000_0000
0
000_0110_1001
0
000_0000_0011
0
011_0110_0101
0
000_1011_1111
0
000_0001_1101
0
000_0000_0000
0
000_0000_0111
0
011_0011_0111
0
000_0000_0011
0
011_1100_1011
0
001_0001_0011
314514
UM10858
PN7462 family HW user manual
HSU_TX_CLK_C
ORRECT
000_0000_0000
001_0101_0101
010_0010_0010
001_1111_0111
001_0010_1010
010_1101_1101
011_1111_0111
001_0010_1010
001_0000_0000
001_0001_0010
001_1101_1101
000_0100_0100
011_1011_1011
001_0010_1010
© NXP B.V. 2018. All rights reserved.
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