III PERIPHERAL BLOCK: SERIAL INTERFACE
Register name | Address | Bit | Name | Function |
| Setting | Init. | R/W | Remarks | |||
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P0 function | 00402D0 | – | Reserved |
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| – |
| – | – | 0 when being read. | ||
select register | (B) | D5 | CFP05 | P05 function selection | 1 | SOUT1 |
| 0 | P05 | 0 | R/W | Extended functions |
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| D4 | CFP04 | P04 function selection | 1 | SIN1 |
| 0 | P04 | 0 | R/W | (0x402DF) |
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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 | CFP322 | P32 function selection 2 | 1 | – |
| 0 | P32/ | 0 | R/W | Always set to 0. |
extension |
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| #DMAACK0 |
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register |
| D2 | CFP152 | P15 function selection 2 | 1 | – |
| 0 | P15/EXCL4/ | 0 | R/W | Always set to 0. |
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| #DMAEND0 |
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| D1 | CFP162 | P16 function selection 2 | 1 | – |
| 0 | P16/EXCL5/ | 0 | R/W | Always set to 0. |
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| #DMAEND1 |
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| D0 | CFP332 | P33 function selection 2 | 1 | – |
| 0 | P33/ | 0 | R/W | Always set to 0. |
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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 | – | reserved | 1 |
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| 0 | R/W | Undefined when read. | ||
extension | (B) | D5 | CFEX5 | P05 port extended function | 1 | – |
| 0 | P05, etc. | 0 | R/W | Always set to 0. |
register |
| D4 | CFEX4 | P04 port extended function | 1 | – |
| 0 | P04, etc. | 0 | R/W | Always set to 0. |
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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 |
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| P11, etc. |
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| DPC0 |
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| 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 |
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| 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 P05 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.
CFP332: P33 function selection 2 (D0) / Port SIO function extension register (0x402D7)
Specifies the function of pin P33/#DMAACK1. Always set to "0."
Write "0": P33/#DMAACK1
Read: Valid
To use the pin as P33 or #DMAACK1, set this bit to "0".
At
EPSON | S1C33210 FUNCTION PART |