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NXP Semiconductors
UM191812
PN544 C2 User Manual
191812
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© NXP B.V. 2010. All rights reserved.
User Manual
Rev. 1.2 — 2010-06-16
22 of 172
Byte coding of optional HSU baud rate:
0x00
9 600 baud
0x01 RFU
0x02
28 800 baud
0x03 RFU
0x04 RFU
0x05
115 200 baud
0x06
230 400 baud
0x07
460 800 baud
0x08 RFU
A baud rate change is always initiated by the host. The flow is as follows:
Host
PN544
(LLC)
RSET(Window size, Endpoint capabilities,
baudrate)
UA
Change
baud rate (*)
Next I-Frame
ACK
Change
baud rate
(4) (*) A 150
μ
s delay is needed before sending the next I-Frame.
Fig 13. baud rate change flow