III PERIPHERAL BLOCK: SERIAL INTERFACE
B-III-8-20
EPSON
S1C33L03 FUNCTION PART
• Overrun error
If during successive receive operations, a receive operation for the next data is completed before the receive
data register is read out, the receive data register is overwritten with the new data. Therefore, the receive data
register must always be read out before a receive operation for the next data is completed.
When the receive data register is overwritten, an overrun error is generated and the overrun-error flag is set to
"1".
Ch.0 overrun-error flag: OER0 (D2) / Serial I/F Ch.0 status register (0x401E2)
Ch.1 overrun-error flag: OER1 (D2) / Serial I/F Ch.1 status register (0x401E7)
Ch.2 overrun-error flag: OER2 (D2) / Serial I/F Ch.2 status register (0x401F2)
Ch.3 overrun-error flag: OER3 (D2) / Serial I/F Ch.3 status register (0x401F7)
Even when this error occurs, the received data in error is transferred to the receive data register and the
receive operation is continued.
The OERx flag is reset to "0" by writing "0".
(4) Terminating receive operation
When a data receive operation is completed, write "0" to the receive-enable bit RXENx to disable receive
operations.
Summary of Contents for CMOS 32-Bit Single Chip Microcomputer S1C33L03
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Page 149: ...S1C33L03 FUNCTION PART I OUTLINE ...
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Page 162: ...I OUTLINE LIST OF PINS B I 3 8 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 163: ...S1C33L03 FUNCTION PART II CORE BLOCK ...
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Page 172: ...II CORE BLOCK CPU AND OPERATING MODE B II 2 6 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 176: ...II CORE BLOCK INITIAL RESET B II 3 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 224: ...II CORE BLOCK BCU Bus Control Unit B II 4 48 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 262: ...II CORE BLOCK DBG Debug Unit B II 7 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 263: ...S1C33L03 FUNCTION PART III PERIPHERAL BLOCK ...
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Page 415: ...S1C33L03 FUNCTION PART IV ANALOG BLOCK ...
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Page 435: ...S1C33L03 FUNCTION PART V DMA BLOCK ...
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Page 492: ...V DMA BLOCK IDMA Intelligent DMA B V 3 18 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 493: ...S1C33L03 FUNCTION PART VI SDRAM CONTROLLER BLOCK ...
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Page 531: ...S1C33L03 FUNCTION PART VII LCD CONTROLLER BLOCK ...
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