III PERIPHERAL BLOCK: SERIAL INTERFACE
Register name | Address | Bit | Name | Function |
| Setting | Init. | R/W | Remarks | ||
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P0 function | 00402D0 | D7 | CFP07 | P07 function selection | 1 | #SRDY1 | 0 | P07 | 0 | R/W | Extended functions |
select register | (B) | D6 | CFP06 | P06 function selection | 1 | #SCLK1 | 0 | P06 | 0 | R/W | (0x402DF) |
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| D5 | CFP05 | P05 function selection | 1 | SOUT1 | 0 | P05 | 0 | R/W |
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| D4 | CFP04 | P04 function selection | 1 | SIN1 | 0 | P04 | 0 | R/W |
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| D3 | CFP03 | P03 function selection | 1 | #SRDY0 | 0 | P03 | 0 | R/W |
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| D2 | CFP02 | P02 function selection | 1 | #SCLK0 | 0 | P02 | 0 | R/W |
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| D1 | CFP01 | P01 function selection | 1 | SOUT0 | 0 | P01 | 0 | R/W |
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| D0 | CFP00 | P00 function selection | 1 | SIN0 | 0 | P00 | 0 | R/W |
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Port SIO | 00402D7 | – | reserved |
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function |
| D3 | SSRDY3 | Serial I/F Ch.3 SRDY selection | 1 | #SRDY3 | 0 | P32/ | 0 | R/W |
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extension |
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| #DMAACK0 |
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register |
| D2 | SSCLK3 | Serial I/F Ch.3 SCLK selection | 1 | #SCLK3 | 0 | P15/EXCL4/ | 0 | R/W |
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| #DMAEND0 |
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| D1 | SSOUT3 | Serial I/F Ch.3 SOUT selection | 1 | SOUT3 | 0 | P16/EXCL5/ | 0 | R/W |
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| #DMAEND1 |
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| D0 | SSIN3 | Serial I/F Ch.3 SIN selection | 1 | SIN3 | 0 | P33/ | 0 | R/W |
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| #DMAACK1 |
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Port SIO | 00402DB | – | reserved |
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function |
| D3 | SSRDY2 | Serial I/F Ch.2 SRDY selection | 1 | #SRDY2 | 0 | P24/TM2 | 0 | R/W |
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extension |
| D2 | SSCLK2 | Serial I/F Ch.2 SCLK selection | 1 | #SCLK2 | 0 | P25/TM3 | 0 | R/W |
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register |
| D1 | SSOUT2 | Serial I/F Ch.2 SOUT selection | 1 | SOUT2 | 0 | P26/TM4 | 0 | R/W |
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| D0 | SSIN2 | Serial I/F Ch.2 SIN selection | 1 | SIN2 | 0 | P27/TM5 | 0 | R/W |
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Port function | 00402DF | D7 | CFEX7 | P07 port extended function | 1 | #DMAEND3 | 0 | P07, etc. | 0 | R/W |
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extension | (B) | D6 | CFEX6 | P06 port extended function | 1 | #DMAACK3 | 0 | P06, etc. | 0 | R/W |
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register |
| D5 | CFEX5 | P05 port extended function | 1 | #DMAEND2 | 0 | P05, etc. | 0 | R/W |
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| D4 | CFEX4 | P04 port extended function | 1 | #DMAACK2 | 0 | P04, etc. | 0 | R/W |
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| D3 | CFEX3 | P31 port extended function | 1 | #GARD | 0 | P31, etc. | 0 | R/W |
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| D2 | CFEX2 | P21 port extended function | 1 | #GAAS | 0 | P21, etc. | 0 | R/W |
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| D1 | CFEX1 | P10, P11, P13 port extended | 1 | DST0 | 0 | P10, etc. | 1 | R/W |
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| function |
| DST1 |
| P11, etc. |
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| DPC0 |
| P13, etc. |
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| D0 | CFEX0 | P12, P14 port extended function | 1 | DST2 | 0 | P12, etc. | 1 | R/W |
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| DCLK |
| P14, etc. |
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Selects the pins used for the serial interface.
Write "1":
Write "0": I/O port pin
Read: Valid
Select the pins used for the serial interface from among P00 through P07 by writing "1" to CFP00 through CFP07.
The necessary input/output pins differ depending on the transfer mode set (see Table 8.3).
At cold start, CFP is set to "0" (I/O port). At hot start, CFP retains its state from prior to the initial reset.
SSIN3: Serial I/F Ch.3 SIN selection (D0) / Port SIO function extension register (0x402D7)
Switches the function of pin P33/#DMAACK1/SIN3.
Write "1": | SIN3 |
Write "0": | P33/#DMAACK1 |
Read: | Valid |
To use the pin as SIN3, set SSIN3 (D0 / 0x402D7) to "1" and CFP33 (D3 / 0x402DC) to "0". To use the pin as P33 or #DMAACK1, set this bit to "0".
At
EPSON | S1C33L03 FUNCTION PART |