III PERIPHERAL BLOCK: SERIAL INTERFACE
B-III-8-34
EPSON
S1C33L03 FUNCTION PART
SSCLK2: Serial I/F Ch.2 SCLK selection (D2) / Port SIO function extension register (0x402DB)
Switches the function of pin P25/TM3/#SCLK2.
Write "1": #SCLK2
Write "0": P25/TM3
Read: Valid
To use the pin as #SCLK2, set SSCLK2 (D2 / 0x402DB) to "1" and CFP25 (D5 / 0x402D8) to "0".
To use the pin as P25 or TM3, set this bit to "0".
At power-on, this bit is set to "0".
SSRDY2: Serial I/F Ch.2 SRDY selection (D3) / Port SIO function extension register (0x402DB)
Switches the function of pin P24/TM2/#SRDY2.
Write "1": #SRDY2
Write "0": P24/TM2
Read: Valid
To use the pin as #SRDY2, set SSRDY2 (D3 / 0x402DB) to "1" and CFP24 (D4 / 0x402D8) to "0".
To use the pin as P24 or TM2, set this bit to "0".
At power-on, this bit is set to "0".
CFEX7–CFEX4: P0[7:4] pin function selection (D[7:4]) / Port function extension register (0x402DF)
Selects the extended function of pins P07–P04.
Write "1": Function-extended pin
Write "0": I/O-port/serial I/O pin
Read: Valid
When CFEX[7:4] is set to "1", the P07–P04 ports function as DMA signal output ports. When CFEX[7:4] = "0",
the CFP0[7:4] bit becomes effective, so the settings of these bits determine whether the P07–P04 ports function as
I/O port s or serial interface Ch.1 signal output ports.
At cold start, CFEX[7:4] is set to "0" (I/O-port/serial I/O pin). At hot start, CFEX[7:4] retains its state from prior to
the initial reset.
TXD07–TXD00: Ch.0 transmit data (D[7:0]) / Serial I/F Ch.0 transmit data register (0x401E0)
TXD17–TXD10: Ch.1 transmit data (D[7:0]) / Serial I/F Ch.1 transmit data register (0x401E5)
TXD27–TXD20: Ch.2 transmit data (D[7:0]) / Serial I/F Ch.2 transmit data register (0x401F0)
TXD37–TXD30: Ch.3 transmit data (D[7:0]) / Serial I/F Ch.3 transmit data register (0x401F5)
Sets transmit data.
When data is written to this register (transmit buffer) after "1" is written to TXENx, a transmit operation is begun.
TDBEx is set to "1" (transmit-buffer empty) when the data is transferred to the shift register. A transmit-buffer
empty interrupt factor is simultaneously generated. The next transmit data can be written to the buffer at any time
thereafter, even when the serial interface is sending data.
In the 7-bit asynchronous mode, TXDx7 (MSB) is ignored.
The serial-converted data is output from the SOUT pin beginning with the LSB, in which the bits set to "1" are
output as high-level signals and those set to "0" output as low-level signals.
This register can be read as well as written.
At initial reset, the content of TXDx becomes indeterminate.
Summary of Contents for CMOS 32-Bit Single Chip Microcomputer S1C33L03
Page 4: ......
Page 14: ......
Page 15: ...S1C33L03 PRODUCT PART ...
Page 16: ......
Page 147: ...S1C33L03 FUNCTION PART ...
Page 148: ......
Page 149: ...S1C33L03 FUNCTION PART I OUTLINE ...
Page 150: ......
Page 152: ...I OUTLINE INTRODUCTION B I 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
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 ...
Page 164: ......
Page 166: ...II CORE BLOCK INTRODUCTION B II 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
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 ...
Page 264: ......
Page 266: ...III PERIPHERAL BLOCK INTRODUCTION B III 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 322: ...III PERIPHERAL BLOCK WATCHDOG TIMER B III 5 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 415: ...S1C33L03 FUNCTION PART IV ANALOG BLOCK ...
Page 416: ......
Page 418: ...IV ANALOG BLOCK INTRODUCTION B IV 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 434: ...IV ANALOG BLOCK A D CONVERTER B IV 2 16 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 435: ...S1C33L03 FUNCTION PART V DMA BLOCK ...
Page 436: ......
Page 438: ...V DMA BLOCK INTRODUCTION B V 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
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 ...
Page 494: ......
Page 531: ...S1C33L03 FUNCTION PART VII LCD CONTROLLER BLOCK ...
Page 532: ......
Page 579: ...S1C33L03 FUNCTION PART Appendix I O MAP ...
Page 580: ......