Epson S1C63558 Remarks, ∗ 2 Not set in the circuit, Constantly "0" when being read, ∗ 1 Initial value at initial reset, Table 4.1.1 (a) I/O memory map (FF00H–FF18H)

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)

Table 4.1.1 (a) I/O memory map (FF00H–FF18H)

	Address		Register															Comment
		D3	D2		D1	D0	Name	Init ∗ 1		1	0
		CLKCHG	OSCC		0	Dummy	CLKCHG	0		OSC3	OSC1	CPU clock switch
	FF00H						OSCC	0		On	Off	OSC3 oscillation On/Off
		R/W			R	R/W	0 ∗ 3	– ∗ 2				Unused
							Dummy	0				General-purpose register
		SVDS3	SVDS2	SVDS1		SVDS0	SVDS3	0					SVD criteria voltage setting
														[SVDS3–0]		0	1	2	3	4	5	6	7
							SVDS2	0
	FF04H													Voltage(V) 2.20/1.05 2.20				2.20	2.20	2.20	2.30	2.40	2.50
							SVDS1	0
			R/W											[SVDS3–0]		8	9	10	11	12	13	14	15
							SVDS0	0
														Voltage(V) 2.60 2.70 2.80 2.90 3.00 3.10								3.20	3.30
		0	0		SVDDT	SVDON	0 ∗ 3	– ∗ 2				Unused
							0 ∗ 3	– ∗ 2				Unused
	FF05H
			R			R/W	SVDDT	0		Low	Normal	SVD evaluation data
							SVDON	0		On	Off	SVD circuit On/Off
		FOUTE	0		FOFQ1	FOFQ0	FOUTE	0		FOUT	DC	R03 output selection (R03 should be fixed at "1".)
												Unused
	FF06H						0 ∗ 3	– ∗ 2
							FOFQ1	0					FOUT				[FOFQ1, 0]		0		1	2	3
		R/W	R		R/W								frequency
							FOFQ0	0					selection				Frequency fOSC1/64 fOSC1/8					fOSC1	fOSC3
		0	0		WDEN	WDRST	0 ∗ 3	– ∗ 2				Unused
							0 ∗ 3	– ∗ 2				Unused
	FF07H
		R			R/W	W	WDEN	1		Enable	Disable	Watchdog timer enable
							WDRST∗ 3	Reset		Reset	Invalid	Watchdog timer reset (writing)
		TPS	0		MB	DRS	TPS	0		Pulse	Tone	Tone / pulse mode selection
							0 ∗ 3	– ∗ 2				Unused
	FF10H
		R/W	R		R/W		MB	0		33.3:66.6	40:60	Make : Break ratio selection
							DRS	0		20pps	10pps	Dialing pulse rate selection
		PTS3	PTS2		PTS1	PTS0	PTS3	0					Pause time selection (initial value: 4 sec)
							PTS2	1						[PTS3–0]		0	1	2	3	4	5	6	7
	FF11H													Time(sec)		⋅	1	2	3	4	5	6	7
							PTS1	0
			R/W											[PTS3–0]		8	9	10	11	12	13	14	15
							PTS0	0
														Time(sec)		8	9	10	11	12	13	14	15
		FTS3	FTS2		FTS1	FTS0	FTS3	0					Flash time selection (initial value: 563 ms)
							FTS2	1						[FTS3–0]		0	1	2	3	4	5	6	7
	FF12H													Time(ms)		⋅	94	188	281	375	469	563	656
							FTS1	1
			R/W											[FTS3–0]		8	9	10	11	12	13	14	15
							FTS0	0
														Time(ms)	750		844	938	1031	1125	1219	1313	1406
		CHFO	CHDO		CRMO	CTMO	CHFO	0		HFO	DC	R13 output selection (R13 should be fixed at "1".)
							CHDO	0		HDO	DC	R12 output selection (R12 should be fixed at "1".)
	FF13H
			R/W				CRMO	0		XRMUTE	DC	R11 output selection (R11 should be fixed at "1".)
							CTMO	0		XTMUTE	DC	R10 output selection (R10 should be fixed at "1".)
		HF	HOLD		PAUSE	FLASH	HF	0		Yes	No	Hand free
							HOLD	0		On	Off	Hold-line function
	FF14H
		R/W			W		PAUSE∗ 3	0		Yes	No	Pause function
							FLASH∗ 3	0		Yes	No	Flash function
		IDP3	IDP2		IDP1	IDP0	IDP3	1					Inter-digit pause selection for dial pulse (initial value: 750 ms)
							IDP2	0						[IDP3–0]		0	1	2	3	4	5	6	7
	FF15H													Time(ms)		⋅	94	188	281	375	469	563	656
							IDP1	0
			R/W											[IDP3–0]		8	9	10	11	12	13	14	15
							IDP0	0
														Time(ms)	750		844	938	1031	1125	1219	1313	1406
		CTO	0		SINR	SINC	CTO	0		On	Off	Continuous tone output On/Off
							0 ∗ 3	– ∗ 2				Unused
	FF16H
		R/W	R		R/W		SINR	1		Enable	Disable	DTMF row frequency output enable
							SINC	1		Enable	Disable	DTMF column frequency output enable
							TCD3	0					Telephone code for dialing
		TCD3	TCD2		TCD1	TCD0	TCD2	0						[TCD3–0]		0	1	2	3	4	5	6	7
														DTMF (R1C4)(R1C1)(R1C2)(R1C3)(R2C1)(R2C2)(R2C3)(R3C1)
	FF17H						TCD1	0						DP		⋅	1	2	3	4	5	6	7
														[TCD3–0]		8	9	10	11	12	13	14	15
			R/W
							TCD0	0						DTMF	(R3C2)(R3C3)(R4C2)(R4C3)(R4C1)(R2C4)(R4C4)(R3C4)
														DP		8	9	10	11	12	13	14	15
		HSON	0		CRMUT	CTMUT	HSON	0		Off	On	Hook switch On/Off
	FF18H						0 ∗ 3	– ∗ 2				Unused
		R/W	R		R/W		CRMUT	1		Mute	0	Receive mute control
							CTMUT	1		Mute	0	Transmit mute control
Remarks
∗ 1 Initial value at initial reset								∗ 3	Constantly "0" when being read
∗ 2 Not set in the circuit								∗ 4 Depends on the input status of the RDIN terminal
S1C63558 TECHNICAL MANUAL										EPSON													15