MSF receiver module (analogue but with data pins available)

[lew247]

Seeing there is no edit button on this and I cant change it
Does anyone know if the msf and dcf data is the same?

What I've discovered "so far" is that the DCF signal outputs THIS:

 Bit    Name    Description        Comment 
0-14           Reserved           Coding to requirement 
15     R       Send antenna       0 = Standard antenna / 1 = Reserve antenna 
16     A1      Announcement 1     1 = Next hour a Daylight Saving Time (DST) change occurs 
17     Z1      Time Zone bit 1    0 = Winter / 1 = Summer (DST) 
18     Z2      Time Zone bit 2    0 = Summer / 1 = Winter (usually the opposite of Z1) 
19     A2      Announcement 2     1 = Next hour an extra second is inserted (leap-second) 
20     S       Startbit           Always 1, startbit coded time information 
21-27          Minutes            7 bit, BCD, LSB first (00...59) 
28     P1      Parity bit 1       Even parity for all received bits from the minutes 
29-34          Hours              6 bit,BCD, LSB first (00...23) 
35     P2      Parity bit 2       Even parity for all received bits from the hours 
36-41          Day of the month   6 bit, BCD, LSB first (01...31) 
42-44          Day of the week    3 bit, BCD, LSB first (1 = Monday...7 = Sunday) 
45-49          Month 5 bit,       BCD, LSB first (01...12) 
50-57          Year 8 bit,        BCD, LSB first (00...99) 
58     P3      Parity bit 3       Even parity for all received bits from the date

i'm guessing the bit numbers above are whats transmitted in those actual seconds?


While the MSF receiver module I have (and want to use) the only info I have to the outputs are:

 Taken from the PDF file the ONLY info relating to the data output pins:
Serial Output
This port can be used for connecting external units, like. digital displays.
Available information:
 Actual year
 Actual month
 Actual day
 Actual day of the week
 Actual hour [12h]
 Actual AM/PM
 Actual minute
 Actual second
The transmition always happens on the begining of every hour, at
HH:00.00,500 and takes 44 ms.
Additional transmitions will happen after „first receive“, „forced receive“ und „auto
receive“ and after any correction of the hands was necessary.

Specification Date: 09.03.2005
MSF RC_wallclockDO_Specification
2.7.1. Format of data
Nr. Describtion Format Numbers Explanation
1 daylow   BCD 00 - 31 Lower byte of actual day
2 dayhigh  BCD 00 - 31 High byte of actual day
3 dayofweek HEX 1 - 7 Day of the week, 1 = monday
4 month    HEX 1 - 12 Actual month, 1 = January
5 yearlow  HEX 00 - 63 Actual year, 14H = xx20
6 yearhigh HEX 00 - 63 Actual year, 14H = xx20
7 minutelow  BCD 0 - 9 Actual minute, 0 - 9
8 minutehigh BCD 0 - 5 Actual minute, 10 -50, 0xxx = AM, 1xxx = PM
9 hour HEX 0 - 11 Actual hour
10 secondlow  BCD 0 - 9 Actual second, 0 - 9
11 secondhigh BCD 0 - 5 Actual second, 10 -50


The transmition is serial, sychronized to a clock-frequency of 1 kHz. The clock frequency is
also available on the port. 
Timing diagram:
clock pin … 1
data pin ... 2
First nibble Second nibble Third nibble Fourth nibble ...
daylow = 0101B =5 dayhigh = 0010H =2 dayofw. = 0011H =3 month = 1011H =11 ...
Beispiel: 25. Nov. Mittwoch
Example: Nov. 25th Wednesday

I've got an example of a basic program to decode the German DCF signal but it's in proton basic while I'll be using picbasic pro, which isn't a problem I can figure out how to convert it ok
What i could do with some help on is, any ideas what bits I need to change in the code to get the msf module decoding?
i.e the main differences I need to look out for or work on changing
I've never done anything with clocks before, and never used a serial input to a pic either so any ideas are welcome