1.5. Dual-Port RAM Interface
Command 0x14: Set Periodic Output
This command establishes the frequency of the TFP Programmable Periodic Output. "1.3.2. Heart-
beat Output" on page 18 describes the relationship between the dividers n1, n2 and the Periodic Out-
put frequency.
Byte
Type
Item
Value or Range
0
UINT8
ID
0x14
1
UINT8
Sync Flag
0 = Don't Sync To 1PPS
1 = Sync To 1 PPS
2-3
UINT16
Divider n1
2 - 65535
4-5
UINT16
Divider n2
2 - 65535
Command 0x15: Set Input Time Code Format
This command selects the time code format for TFP Timing Mode “0” time code input. (See Com-
mand 0x10.) Use Command 0x16 to set the modulation type. Note that this selection is restored at
power-up from NV memory.
Byte
Type
Item
Value or Range
0
UINT8
ID
0x15
1
UINT8
Format1
See below
2
UINT8
Format2
See below
Format Choices:
Format1
Format2
ASCII
AM
Time Code
DCLS
0x41
0x0
'A'
A130,1,2,3
IRIG A no year
A000,1,2,3
0x41
0x59
'AY'
A134,5,6,7
IRIG A w/year
A004,5,6,7
0x42
0x0
'B'
B120,1,2,3
IRIG B no year
B000,1,2,3
0x42
0x59
'BY'
B124,5,6,7
IRIG B w/year
B004,5,6,7
0x45
0x0
'E'
E121,2
IRIG E 1K no year
E001,2
0x45
0x59
'EY'
E125,6
IRIG E 1K w/year
E005,6
0x65
0x0
'e'
E111,2
IRIG E 100 no year
E001,2
0x65
0x59
'eY'
E115,6
IRIG E 1K w/year
E005,6
0x47
0x0
'G'
E141,2
IRIG G no year
G001,2
0x47
0x59
'GY'
E145,6
IRIG G w/year
G005,6
0x42
0x54
'BT'
AM
IRIG B TrueTime
DCLS
0x49
0x0
'I'
AM
IRIG B IEEE 1344
DCLS
0x4e
0x0
'N'
AM
NASA 36
DCLS
0x58
0x0
'X'
AM
XR3 (250 Hz)
DCLS
0x32
0x0
'2'
AM
2137 (1 kHz)
DCLS
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