Epson S1C33L03 manual 395

III PERIPHERAL BLOCK: INPUT/OUTPUT PORTS

Register name	Address	Bit	Name	Function		Setting			Init.	R/W	Remarks
Port SIO	00402D7	D7–4	–	reserved		–			–	–
function		D3	SSRDY3	Serial I/F Ch.3 SRDY selection	1	#SRDY3	0	P32/	0	R/W
extension								#DMAACK0
register		D2	SSCLK3	Serial I/F Ch.3 SCLK selection	1	#SCLK3	0	P15/EXCL4/	0	R/W
								#DMAEND0
		D1	SSOUT3	Serial I/F Ch.3 SOUT selection	1	SOUT3	0	P16/EXCL5/	0	R/W
								#DMAEND1
		D0	SSIN3	Serial I/F Ch.3 SIN selection	1	SIN3	0	P33/	0	R/W
								#DMAACK1
P2 function	00402D8	D7	CFP27	P27 function selection	1	TM5	0	P27	0	R/W
select register	(B)	D6	CFP26	P26 function selection	1	TM4	0	P26	0	R/W
		D5	CFP25	P25 function selection	1	TM3	0	P25	0	R/W
		D4	CFP24	P24 function selection	1	TM2	0	P24	0	R/W
		D3	CFP23	P23 function selection	1	TM1	0	P23	0	R/W
		D2	CFP22	P22 function selection	1	TM0	0	P22	0	R/W
		D1	CFP21	P21 function selection	1	#DWE	0	P21	0	R/W	Ext. func.(0x402DF)
		D0	CFP20	P20 function selection	1	#DRD	0	P20	0	R/W
P2 I/O port data	00402D9	D7	P27D	P27 I/O port data	1	High	0	Low	0	R/W
register	(B)	D6	P26D	P26 I/O port data					0	R/W
		D5	P25D	P25 I/O port data					0	R/W
		D4	P24D	P24 I/O port data					0	R/W
		D3	P23D	P23 I/O port data					0	R/W
		D2	P22D	P22 I/O port data					0	R/W
		D1	P21D	P21 I/O port data					0	R/W
		D0	P20D	P20 I/O port data					0	R/W
P2 I/O control	00402DA	D7	IOC27	P27 I/O control	1	Output	0	Input	0	R/W	This register
register	(B)	D6	IOC26	P26 I/O control					0	R/W	indicates the values
		D5	IOC25	P25 I/O control					0	R/W	of the I/O control
		D4	IOC24	P24 I/O control					0	R/W	signals of the ports
		D3	IOC23	P23 I/O control					0	R/W	when it is read. (See
		D2	IOC22	P22 I/O control					0	R/W	detailed explanation.)
		D1	IOC21	P21 I/O control					0	R/W
		D0	IOC20	P20 I/O control					0	R/W
Port SIO	00402DB	D7–4	–	reserved		–			–	–
function		D3	SSRDY2	Serial I/F Ch.2 SRDY selection	1	#SRDY2	0	P24/TM2	0	R/W
extension		D2	SSCLK2	Serial I/F Ch.2 SCLK selection	1	#SCLK2	0	P25/TM3	0	R/W
register		D1	SSOUT2	Serial I/F Ch.2 SOUT selection	1	SOUT2	0	P26/TM4	0	R/W
		D0	SSIN2	Serial I/F Ch.2 SIN selection	1	SIN2	0	P27/TM5	0	R/W
P3 function	00402DC	D7–6	–	reserved		–			–	–	0 when being read.
select register	(B)	D5	CFP35	P35 function selection	1	#BUSACK	0	P35	0	R/W
		D4	CFP34	P34 function selection	1	#BUSREQ	0	P34	0	R/W
						#CE6
		D3	CFP33	P33 function selection	1	#DMAACK1	0	P33	0	R/W
		D2	CFP32	P32 function selection	1	#DMAACK0	0	P32	0	R/W
		D1	CFP31	P31 function selection	1	#BUSGET	0	P31	0	R/W	Ext. func.(0x402DF)
		D0	CFP30	P30 function selection	1	#WAIT	0	P30	0	R/W
						#CE4/#CE5
P3 I/O port data	00402DD	D7–6	–	reserved		–			–	–	0 when being read.
register	(B)	D5	P35D	P35 I/O port data	1	High	0	Low	0	R/W
		D4	P34D	P34 I/O port data					0	R/W
		D3	P33D	P33 I/O port data					0	R/W
		D2	P32D	P32 I/O port data					0	R/W
		D1	P31D	P31 I/O port data					0	R/W
		D0	P30D	P30 I/O port data					0	R/W
P3 I/O control	00402DE	D7–6	–	reserved		–			–	–	0 when being read.
register	(B)	D5	IOC35	P35 I/O control	1	Output	0	Input	0	R/W	This register
		D4	IOC34	P34 I/O control					0	R/W	indicates the values
		D3	IOC33	P33 I/O control					0	R/W	of the I/O control
		D2	IOC32	P32 I/O control					0	R/W	signals of the ports
		D1	IOC31	P31 I/O control					0	R/W	when it is read. (See
		D0	IOC30	P30 I/O control					0	R/W	detailed explanation.)

A-1

B-III

I/O

S1C33L03 FUNCTION PART EPSON B-III-9-7