Epson S1C63558 4.14.10 I/O memory of telephone function, Table, ∗2 Not set in the circuit, ∗1 Initial value at initial reset, ∗3 Constantly "0" when being read

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Telephone Function)

4.14.10 I/O memory of telephone function

Table 4.14.10.1 shows the I/O address and the control bits for the telephone function.

Table 4.14.10.1

Control bits of telephone function

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

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

0 ∗3

– ∗2

Unused

FF18H

R/W

R

R/W

CRMUT

1

Mute

0

Receive mute control

CTMUT

1

Mute

0

Transmit mute control

R13HIZ

R12HIZ

R11HIZ

R10HIZ

R13HIZ

0

Hi-Z

Output

R13 (CHFO=0)/HFO (CHFO=1) Hi-z control

FF32H

R12HIZ

0

Hi-Z

Output

R12 (CHDO=0)/HDO (CHDO=1) Hi-z control

R/W

R11HIZ

0

Hi-Z

Output

R11 (CRMO=0)/XRMUTE (CRMO=1) Hi-z control

R10HIZ

0

Hi-Z

Output

R10 (CTMO=0)/XTMUTE (CTMO=1) Hi-z control

R13

R12

R11

R10

R13

1

High

Low

R13 output port data (CHFO=0) Fix at "1" when HFO is used.

FF33H

(HFO)

(HDO)

(XRMUTE)

(XTMUTE)

R12

1

High

Low

R12 output port data (CHDO=0) Fix at "1" when HDO is used.

R/W

R11

1

High

Low

R11 output port data (CRMO=0) Fix at "1" when XRMUTE is used.

R10

1

High

Low

R10 output port data (CTMO=0) Fix at "1" when XTMUTE is used.

0

0

0

EID

0 ∗3

– ∗2

Unused

0 ∗3

– ∗2

Unused

FFE9H

R

R/W

0 ∗3

– ∗2

Unused

EID

0

Enable

Mask

Interrupt mask register (Dialer)

0

0

0

ID

0 ∗3

– ∗2

(R)

(R)

Unused

0 ∗3

– ∗2

Yes

No

Unused

FFF9H

R

R/W

0 ∗3

– ∗2

(W)

(W)

Unused

ID

0

Reset

Invalid

Interrupt factor flag (Dialer)

∗1 Initial value at initial reset

∗3 Constantly "0" when being read

∗2 Not set in the circuit

S1C63558 TECHNICAL MANUAL

EPSON

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