NXP Semiconductors
UM10858
PN7462 family HW user manual
UM10858
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© NXP B.V. 2018. All rights reserved.
User manual
COMPANY PUBLIC
Rev. 1.4 — 14 May 2018
314514
275 of 345
Fig 62. HS UART bit correction
shows the programming values of HSU_RX/TX_DIVIDER and
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)
HSU_RX_DIVIDE
R
HSU_TX_DIVIDE
R
HSU_RX_CLK_C
ORRECT
HSU_TX_CLK_C
ORRECT
9.6
2825
0
000_0000_0000
000_0000_0000
19.2
1412
0
000_0000_0000
001_0101_0101
38.4
706
0
000_0000_0000
010_0010_0010
57.6
470
0
000_0110_1001
001_1111_0111
115.2
235
0
000_0000_0011
001_0010_1010
230.4
117
0
011_0110_0101
010_1101_1101
460.8
58
0
000_1011_1111
011_1111_0111
921.6
29
0
000_0001_1101
001_0010_1010
1288
21
0
000_0000_0000
001_0000_0000
2400
11
0
000_0000_0111
001_0001_0010
7
0
011_0011_0111
001_1101_1101
7
0
000_0000_0011
000_0100_0100
6
0
011_1100_1011
011_1011_1011
5
0
001_0001_0011
001_0010_1010
[1] 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.