RF430CL331HIPWR datasheet(23/63 Pages) TI2

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Reader (PCD)

RF430CL331H (PICC)

Host Controller

ReadBinary command is

sent

Is the data

already

available?

Responds with the

data over the

serial bus

No/Interrupt

INTO

Sends the data

using ISO14443-B

protocol

Yes

PCD processes the data

and possibly repeats the

cycle

If necessary

RF430CL331H

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SLASE18A – SEPTEMBER 2015 – REVISED NOVEMBER 2015

Response register (see Section 5.11.8).

Servicing of the Select command is complete.

4. RF430CL331H procedure:

(a) If the custom Status Words (SW) feature was not used:

(i) If the host controller indicated that the file existed, the response to the PCD is SW1 = 90h and

SW2 = 00h.

(ii) If the host controller indicated that the file did not exist, the response to the PCD is SW1 = 6Ah

and SW2 = 82h.

(b) If the custom response feature was used, the response to the PCD is what was set in the Custom

Status Word Response register (see Section 5.11.13).

5.9.2

NDEF or Capability Container Read Binary Procedure

This read procedure does not change between when the PCD reads the Capability Container or an NDEF

file. These two types of reads can be differentiated by the file identifier that the RF430CL331H reports in

the NDEF File Identifier register (see Section 5.11.7).

For the general flow, see Figure 5-8.

Figure 5-8. Read System Flow

The procedure:

1. PCD procedure:

(a) Issues a Capability Container or a NDEF Read Binary command.

2. RF430CL331H procedure:

(a) Receives the RF packet.

(b) Checks its buffer and determines if all of the requested data in the Read Binary command exists

already in the buffer.

read request):

(i) No interrupt is issued to the host controller.

(ii) The data is supplied in the response packet to the PCD automatically.

(iii) The status word response SW1 = 90h and SW2 = 00h is appended to the packet.

(iv) The flow returns to wait for the next Type 4 request.

(d) If no data or only partial data is available, then an interrupt is issued to the host controller.

3. Host controller procedure:

(a) An interrupt is received.

(b) Checks the source of the interrupt by reading the interrupt registers (see Section 5.11.3).

Detailed Description

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