Datasheet

DS1085
6 of 21
Table 6. FREQUENCY vs. OFFSET
DS1085Z-10 DS1085Z-25 DS1085Z-50
OFFSET FREQUENCY
RANGE
FREQUENCY
RANGE
FREQUENCY
RANGE
OS - 10 — — —
OS - 9 — — —
OS - 8 — — —
OS - 7 — — —
OS - 6 61.4 to 71.6 51.2 to 76.8 38.4 to 89.6
OS - 5 66.5 to 76.8 57.6 to 83.2 44.8 to 96.0
OS - 4 71.6 to 81.9 64.0 to 89.6 51.2 to 102.4
OS - 3 76.7 to 87.0 70.4 to 96.0 57.6 to 108.8
OS - 2 81.9 to 92.1 76.8 to 102.4 64.0 to 115.2
OS - 1 87.0 to 97.2 83.2 to 108.8 70.4 to 121.6
OS* 92.1 to 102.3 89.6 to 115.2 76.8 to 128.0
OS + 1 97.2 to 107.5 96.0 to 121.6 83.2 to 134.4
OS + 2 102.3 to 112.6 102.4 to 128.0 89.6 to 140.8
OS + 3 107.5 to 117.7 108.8 to 134.4 96.0 to 147.2
OS + 4 112.6 to 122.8 115.2 to 140.8 102.4 to 153.6
OS + 5 117.7 to 127.9 121.6 to 147.2 108.8 to 160.0
OS + 6 122.8 to 133.1 128.0 to 153.6 115.2 to 166.4
*OS is the OFFSET default setting. OS is the integer value of the five MSBs of RANGE register.
These ranges include values outside the oscillator range of 66MHz to 133MHz. When using these ranges,
values of DAC must be chosen to keep the oscillator within range. Correct operation of the device is not
guaranteed outside the range 66MHz to 133MHz.
MUX WORD (Address 02h)
The MUX word controls several functions. Its bits are organized as follows:
MSB LSB MSB LSB
NAME * PDN1 PDN0 SEL0 EN0 0M1 0M0 1M1 1M0 DIV1 – – – – – –
Default
Setting
0 0 0 1 1 0 0 0 0 0 X X XXXX
*This bit must be set to zero.
X = Don’t care.