mpc9894 ETC-unknow, mpc9894 Datasheet - Page 15

• Manufacturer Part Number: mpc9894
• Description: Quad Input Redundant Idcs Clock Generator
• Manufacturer: ETC-unknow

Advanced Clock Drivers Devices
Freescale Semiconductor
Output Power-Up Register
LVPECL outputs for either power-up or a power-down state.
The use of these bits allows power consumption to be
Feedback Power-Up Register
the MPC9894 feedback output in either a power-up state or a
power-down state. Note this register bit is valid for internal
Table 25. Output Power-Up Register (Register 6 — Read/Write)
Description
Reset Default
Preset Default
Table 26. Clock Output Power-Up Bits
Table 27. Feedback Power-Up Register (Register 7 — Read/Write)
Description
Reset Default
Preset Default
Table 28. Feedback Output Power-Up Bit
The Output Power-Up Register configures each of the 8
The Feedback Power-Up register bit 0 is used to configure
PWR_QFB
PWR_Qxx
Bit
0
1
Bit
0
1
PWR_QD1
Output Power-Down
Output Power-Up
Feedback Output Power-Down
Feedback Output Power-Up
7
0
1
7
PWR_QD0
6
0
1
6
PWR_QC1
5
0
1
5
PWR_QC0
4
0
1
reduced when all of the clock outputs are not used. Placing
an output in the power-down condition is not synchronous
with the clock edges.
feedback configuration only. When external feedback is
selected QFB is always enabled and in a power-up state. The
remaining bits of this register are unused and read as a
logic 0.
4
Description
Description
PWR_QB1
3
0
1
3
PWR_QB01
2
0
1
2
PWR_QA1
1
0
1
1
PWR_QFB
PWR_QA0
MPC9894
0
0
1
0
0
1
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