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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
PCD3311 DTMF/modem/musical tone generator emulation
**********************************************************************
_____ _____
OSCI 1 |* \_/ | 16 Vdd
OSCO 2 | | 15 Vss
MODE 3 | | 14 D4
D5 4 | PCD3311T | 13 N/C
N/C 5 | | 12 D3
STROBE 6 | | 11 D2
TONE 7 | | 10 D1/SDA
A0 8 |_____________| 9 D0/SCL
**********************************************************************/
#ifndef MAME_SOUND_PCD3311_H
#define MAME_SOUND_PCD3311_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> pcd3311_device
class pcd3311_device : public device_t, public device_sound_interface
{
public:
// construction/destruction
pcd3311_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void write(uint8_t data) { m_data = data; }
void strobe_w(int state);
void mode_w(int state) { m_mode = state; }
void a0_w(int state);
void scl_w(int state);
void sda_w(int state);
int sda_r();
// use in memory maps to avoid strobe logic.
void write_direct(uint8_t data) { load_data(data); }
protected:
// device_t overrides
virtual void device_start() override ATTR_COLD;
virtual void sound_stream_update(sound_stream &stream) override;
private:
static constexpr uint8_t PCD3311_SLAVE_ADDRESS = 0x48;
enum { STATE_IDLE, STATE_DEVSEL, STATE_DATAIN };
void load_data(uint8_t data);
int m_mode;
int m_strobe;
uint8_t m_data;
int m_slave_address;
int m_scl;
int m_sdaw;
int m_sdar;
int m_state;
int m_bits;
int m_shift;
int m_devsel;
sound_stream *m_stream; // stream number
uint32_t m_freq[2]; // current frequencies
int32_t m_incr[2]; // initial wave state
sound_stream::sample_t m_signal[2]; // current signals
};
// device type definition
DECLARE_DEVICE_TYPE(PCD3311, pcd3311_device)
#endif // MAME_SOUND_PCD3311_H
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