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/*
(c) 2001 Nathan Rutman nathan@gordian.com 11/13/01
National Semi LM9830 scanner-on-a-chip register defs
*/
#ifndef LM9830_H
#define LM9830_H
/* LM9830 registers (see lm9830 datasheet for a full description */
#define IMAGE_DATA_AVAIL 0x01
#define STATUS 0x02
#define DATAPORT_TARGET 0x03
#define DATAPORT_ADDR 0x04
#define DATAPORT 0x06
#define COMMAND 0x07
#define CLOCK_DIV 0x08 /* Master clock divider */
#define ACTIVE_PX_START 0x1e /* Active pixel start */
#define LINE_END 0x20
#define DATA_PX_START 0x22
#define DATA_PX_END 0x24
#define COLOR_MODE 0x26
#define LAMP_R_ON 0x2c
#define LAMP_R_OFF 0x2e
#define LAMP_G_ON 0x30
#define LAMP_G_OFF 0x32
#define LAMP_B_ON 0x34
#define LAMP_B_OFF 0x36
#define PARALLEL_PORT 0x42 /* Parallel port settings */
#define MICROSTEP 0x45
#define STEP_SIZE 0x46
#define FAST_STEP 0x48
#define SKIP_STEPS 0x4a
#define BUFFER_LIMIT 0x4e /* Pause scanning when buffer is this full */
#define BUFFER_RESUME 0x4f
#define REVERSE_STEPS 0x50
#define STEP_PWM 0x57
#define PAPER_SENSOR 0x58
/* Register 02 flags */
#define STATUS_HOME 0x02
#define STATUS_PAUSE 0x10
#define STATUS_POWER 0x20
/* Register 03 flags */
#define DP_GAMMA 0x00
#define DP_OFFSET 0x01
#define DP_R 0x00
#define DP_G 0x02
#define DP_B 0x04
/* Register 04 flags */
#define DP_WRITE 0x0000
#define DP_READ 0x2000
#endif /* LM9830_H */
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