RM0082
Miscellaneous registers (Misc)
Doc ID 018672 Rev 1
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12.4.24
Special configuration parameters
12.4.25 Powerdown_CFG_CTR
register
The POWERDOWN_CFG_CTR is an R/W register which configures the interrupt wakeup
type used in conjunction with the dynamic power down functionality. The register bit
assignments is given in the next table.
[01]
RFU
-
Reserved for future use (Write don’t care - Read
return zeros)
[00]
mili_reverse
1’h0
MII normal/reverse mode configuration type:
1’b0: MII normal mode (external Eth. PHY
connection): both Txclk and Rxclk bidirectional
signals are configured with input direction and
the MII clocks are provided from the external
Phy.
1’b1: MII reverse mode (MII to MII direct
connection): both Txclk and RXclk bidirectional
signals are configured with output direction and
the MII clock are provided from the internal
logic.
1.
MII frequency definition should be compliant with IEEE-803.3 std: MII Txclk/Rxclk 25/2.5 MHz.
Table 178.
MAC_CFG_CTR register bit assignments (continued)
MAC_CFG_CTR Register
0x0A8
Bit
Name
Reset Value
Description
Table 179.
Powerdown_CFG_CTR register bit assignments
Powerdown_CFG_CTR Register
0x0E0
Bit
Name
Reset
Value
Description
[31:01]
RFU
-
Reserved for future use (Write don’t care - Read return zeros)
Wakeup interrupt type (Firq/Irq) definition; this field selects the
interrupt type detected from processor-1 to restore the normal
operating frequency from the power down state (switch from
sleep to doze/low speed operating mode):
1’b0: Irq interrupt type
: the peripheral interrupt requests lines
are also used as a wakeup source event increasing the overall
interrupt latency time.
1’b1: Firq interrupt type
: single global interrupt request line
which ensure both fast recovery time from power down state
and the best peripheral interrupt response time since the
wakeup SW interrupt service routine is centralized.
The wakeup interrupt vector is defined in the processor-1
interrupt table line-15.
(1)
1.
IRQ interrupt type should be masked before to enter in sleep mode,
[00]
wakeup_fiq_enb
1’h0