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/* $OpenBSD: ds1687reg.h,v 1.2 2008/03/31 07:14:00 jsing Exp $ */
/*
* Copyright (c) 2007, Joel Sing <jsing@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Register locations/definitions for the Dallas Semiconductor (now Maxim)
* DS1685 RTC chip and DS1687 stand-alone RTC EDIP. Product details are
* available at:
*
* http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2757
*
* Full data sheet is available from:
*
* http://datasheets.maxim-ic.com/en/ds/DS1685-DS1687.pdf
*
* The DS1687 contains a DS1685, which is an improved version of the older
* DS1287 RTC. New/extended registers are available by selecting bank 1.
* Register values are either in BCD (data mode 0) or binary (data mode 1).
*/
/*
* DS1687 Registers.
*/
#define DS1687_SEC 0x00 /* Seconds. */
#define DS1687_SEC_ALRM 0x01 /* Alarm seconds. */
#define DS1687_MIN 0x02 /* Minutes. */
#define DS1687_MIN_ALRM 0x03 /* Alarm minutes. */
#define DS1687_HOUR 0x04 /* Hours. */
#define DS1687_HOUR_ALRM 0x05 /* Alarm hours. */
#define DS1687_DOW 0x06 /* Day of week (01-07). */
#define DS1687_DAY 0x07 /* Day (01-31). */
#define DS1687_MONTH 0x08 /* Month (01-12). */
#define DS1687_YEAR 0x09 /* Year (00-99). */
#define DS1687_CTRL_A 0x0a /* Control register A. */
#define DS1687_BANK_1 0x10 /* Bank select. */
#define DS1687_UIP 0x80 /* Update in progress. */
#define DS1687_CTRL_B 0x0b /* Control register B. */
#define DS1687_24_HR 0x02 /* Use 24 hour time. */
#define DS1687_DM_1 0x04 /* Data mode 1 (binary). */
#define DS1687_SET_CLOCK 0x80 /* Prohibit updates. */
#define DS1687_CTRL_C 0x0c /* Control register C. */
#define DS1687_CTRL_D 0x0d /* Control register D. */
#define DS1687_CENTURY 0x48 /* Century (bank 1). */
#define DS1687_DATE_ALRM 0x49 /* Date alarm (bank 1). */
#define DS1687_EXT_CTRL 0x4a /* Extended control register. */
#define DS1687_KICKSTART 0x01 /* Kickstart flag. */
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