LSI Logic Confidential
16-12
Clock Control and Power Management
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
1394 WE
0
1394 WakeUp Enable. If set, the 1394 link on signal
(BIO_LINK_ON) will wake up DoMiNo; otherwise, the link
on signal is ignored.
16.2 Main PLL Power Down and Wake-Up Sequence
Prior to placing the DMN-8600 in a power-down state, all internal units
should be idle (other than async host or async master/system RISC,
which are writing to the power management register). DRAM should be
placed in the power-down state by setting the DRAM stop bit in the
Internal Clock Control register after all DRAM transactions have been
suspended. The MAIN PLL should be the last thing to be powered down.
When in the power-down state, the only way to wake up the DMN-8600
is through reset, which may be generated in one of the following ways:
•
The DMN-8600 reset pin asserted.
•
Slave Host wake-up event. When the DMN-8600 is in power-down
mode, the DMN-8600 asynchronously monitors the H_CS pin and
generates a reset. If the slave host interface is not selected by the
Mode pins, then this function is disabled. The toggling of H_CS must
be part of a legal DoMiNo access cycle; otherwise, the chip may
hang after wake up.
•
1394 wake-up event. When the DMN-8600 is in power-down mode
and 1394 wake up is enabled, the DMN-8600 asynchronously
monitors the LinkOn signal from the 1394 Phy chip and generates a
reset on a rising edge.
•
IR receive wake-up event. When the DMN-8600 is in power-down
mode and IR wake up is enabled, the DMN-8600 asynchronously
monitors SIO_IRRX and generates a reset on a falling edge.
•
UART1 input wake-up event. When the DMN-8600 is in power-down
mode and UART1 wake up is enabled, the DMN-8600
asynchronously monitors the SIO_UART1_RX signal and generates
a reset on a falling edge.
•
GPIO[0] input wake-up event. When the DMN-8600 is in power-down
mode and GPIO[0] wakeup is enabled, the DMN-8600
asynchronously monitors the GPIO[0] signal and generates a reset
on an interrupt event. The type of interrupt event is selected by the
GPIO[0] field in the Interrupt/GPIO Configuration register.
Содержание DMN-8600
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