DS1085 Datasheet, PDF (4/21 Pages) Dallas Semiconductor – EconOscillator Frequency Synthesizer

DS1085
Table 2. DEVICE MODE USING OUT0
EN0 SEL0 PDN0 CTRL0
OUT0
CTRL0
DEVICE
(BIT) (BIT) (BIT)
(PIN)
(PIN)
FUNCTION
MODE
0
0
0
1
0
High-Z
High-Z
Power-Down* Power-Down***
Active
0
1
0
1
0
MCLK/M
MCLK
Mux Select
Active
1
0
0
1
0
High-Z
MCLK
Output Enable
Active
1
1
0
1
0
High-Z
MCLK/M
Output Enable
Active**
X
0
1
1
0
High-Z
MCLK
Power-Down
Power-Down
Active
X
1
1
1
0
High-Z
MCLK/M
Power-Down
Power-Down
Active
*This mode is for applications where OUT0 is not used, but CTRL0 is used as a device shutdown.
**Factory default setting.
***See standby (power-down) current specification for power-down current range.
Table 3. DEVICE MODE USING OUT1
PDN1
CTRL1
CTRL1
(BIT)
(PIN)
FUNCTION
0
0
0
1
Output Enable
1
1
0
1
Power-Down
*Factory default setting.
OUT1 (PIN)
OUT CLK
High-Z
OUT CLK
High-Z
DEVICE MODE
Active*
Active
Power-Down
NOTE:
Both CTRL0 and CTRL1 can be configured as power-downs. They are internally “OR” connected so
either of the control pins can be used to provide a power-down function for the whole device, subject to
appropriate settings of the PDN0 and PDN1 register bits (see Table 4).
Table 4. SHUTDOWN CONTROL WITH PDN0 AND PDN1
PDN0
(BIT)
PDN1
(BIT)
SHUTDOWN CONTROL
0
0
NONE
0
1
CTRL1
1
0
CTRL0
1
1
CTRL1 OR CTRL0
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