Epson S1C33210 Technical Manual page 348

III PERIPHERAL BLOCK: SERIAL INTERFACE
Register name Address Bit
P0 function 00402D0 D7-6
select register (B) D5
D4
D3
D2
D1
D0
Port SIO 00402D7 D7–4
function D3
extension
register D2
D1
D0
Port SIO 00402DB D7–4
function D3
extension D2
register D1
D0
Port function 00402DF D7-6
extension (B) D5
register D4
D3
D2
D1
D0
CFP05–CFP00: P0[5:0] pin function selection (D[5:0]) / P0 function select register (0x402D0)
Selects the pins used for the serial interface.
Write "1": Serial-interface input/output pin
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.
P00–P03 (SIN0, SOUT0, #SCLK0, #SRDY0) are used for channel 0; P04–P05 (SIN1, SOUT1) are used for channel
1. If the bit for a pin is set to "0", the pin functions as an I/O port.
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 power-on, this bit is set to "0".
B-III-8-32
Name Function
– Reserved
CFP05 P05 function selection
CFP04 P04 function selection
CFP03 P03 function selection
CFP02 P02 function selection
CFP01 P01 function selection
CFP00 P00 function selection
– reserved
CFP322 P32 function selection 2
CFP152 P15 function selection 2
CFP162 P16 function selection 2
CFP332 P33 function selection 2
– reserved
SSRDY2 Serial I/F Ch.2 SRDY selection
SSCLK2 Serial I/F Ch.2 SCLK selection
SSOUT2 Serial I/F Ch.2 SOUT selection
SSIN2 Serial I/F Ch.2 SIN selection
– reserved
CFEX5 P05 port extended function
CFEX4 P04 port extended function
CFEX3 P31 port extended function
CFEX2 P21 port extended function
CFEX1 P10, P11, P13 port extended
function
CFEX0 P12, P14 port extended function
Setting
–
1 SOUT1 0 P05
1 SIN1 0 P04
1 #SRDY0 0 P03
1 #SCLK0 0 P02
1 SOUT0 0 P01
1 SIN0 0 P00
–
1 – 0 P32/
#DMAACK0
1 – 0 P15/EXCL4/
#DMAEND0
1 – 0 P16/EXCL5/
#DMAEND1
1 – 0 P33/
#DMAACK1
–
1 #SRDY2 0 P24/TM2
1 #SCLK2 0 P25/TM3
1 SOUT2 0 P26/TM4
1 SIN2 0 P27/TM5
–
1
1 – 0 P05, etc.
1 – 0 P04, etc.
1 #GARD 0 P31, etc.
1 #GAAS 0 P21, etc.
1 DST0 0 P10, etc.
DST1 P11, etc.
DPC0 P13, etc.
1 DST2 0 P12, etc.
DCLK P14, etc.
EPSON
Init. R/W Remarks
– – 0 when being read.
0 R/W Extended functions
0 R/W (0x402DF)
0 R/W
0 R/W
0 R/W
0 R/W
– –
Always set to 0.
0 R/W
Always set to 0.
0 R/W
Always set to 0.
0 R/W
Always set to 0.
0 R/W
– –
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W Undefined when read.
0 R/W Always set to 0.
0 R/W Always set to 0.
0 R/W
0 R/W
1 R/W
1 R/W
S1C33210 FUNCTION PART