HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 525

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HD6433044

Manufacturer Part Number
HD6433044
Description
(HD64 Series) Hitachi Single-Chip Microcomputer
Manufacturer
Hitachi Semiconductor
Datasheet

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Receiving Serial Data: The receiving procedure in smart card mode is the same as the normal
SCI procedure. Figure 14-7 shows a flowchart for receiving.
1. Initialize the smart card interface by the procedure given in Initialization at the beginning of
2. Check that the ORER and PER error flags are cleared to 0 in SSR. If either flag is set, carry
3. Check that the RDRF flag is set to 1. Repeat steps 2 and 3 until this check passes.
4. Read receive data from RDR.
5. To continue receiving data, clear the RDRF flag to 0 and return to step 2.
6. To terminate receiving, clear the RE bit to 0.
this section.
out the necessary error handling, then clear both the ORER and PER flags to 0.
No
No
Figure 14-7 Receive Flowchart (Example)
Read RDR and clear RDRF
All data received ?
Clear RE bit to 0
flag to 0 in SSR
ORER = 0 and
Start receiving
RDRF = 1 ?
PER = 0 ?
Initialize
Start
Yes
Yes
515
No
Error handling

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