h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 296
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h8s-2111b
Manufacturer Part Number
h8s-2111b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2111B.pdf
(582 pages)
- Current page: 296 of 582
- Download datasheet (4Mb)
Rev. 1.00, 05/04, page 262 of 544
No
No
No
Figure 12.13 Sample Multiprocessor Serial Reception Flowchart (1)
Read ORER and FER flags in SSR
Read ORER and FER flags in SSR
Read receive data in RDR
Read receive data in RDR
Set MPIE bit in SCR to 1
Clear RE bit in SCR to 0
Read RDRF flag in SSR
Read RDRF flag in SSR
All data received?
FER ∨ ORER = 1
FER ∨ ORER = 1
This station’s ID?
Start reception
Initialization
RDRF = 1
RDRF = 1
<End>
Yes
Yes
Yes
Yes
No
No
Yes
No
Yes
Error processing
[3]
[1]
[2]
(Continued on
next page)
[4]
[5]
[1]
[2]
[3]
[4]
[5]
[Legend]
∨ : Logical OR
SCI initialization:
The RxD pin is automatically designated as
the receive data input pin.
ID reception cycle:
Set the MPIE bit in SCR to 1.
SCI status check, ID reception and
comparison:
Read SSR and check that the RDRF flag is
set to 1, then read the receive data in RDR
and compare it with this station’s ID.
If the data is not this station’s ID, set the MPIE
bit to 1 again, and clear the RDRF flag to 0.
If the data is this station’s ID, clear the RDRF
flag to 0.
SCI status check and data reception:
Read SSR and check that the RDRF flag is
set to 1, then read the data in RDR.
Receive error processing and break detection:
If a receive error occurs, read the ORER and
FER flags in SSR to identify the error. After
performing the appropriate error processing,
ensure that the ORER and FER flags are all
cleared to 0.
Reception cannot be resumed if either of
these flags is set to 1.
In the case of a framing error, a break can be
detected by reading the RxD pin value.
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