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PRELIMINARY
S3C6400X RISC MICROPROCESSOR
USB2.0 HS OTG
26-15
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
OTG PHY CONTROL REGISTERS
OTG PHY POWER CONTROL REGISTER (OPHYPWR)
Register
Address
R/W
Description
Reset Value
OPHYPWR
0x7C10_0000
R/W
OTG PHY Power Control Register
32 bits
OPHYPWR
Bit
R/W
Description
Initial State
[31:4]
Reserved
28’h0
analog_powerdown
[3]
R_W
Analog block power down in PHY2.0
·
1’b0 : Analog block power up (Normal Operation)
·
1’b1 : Analog block power down
1’b1
xo_powerdown
[2]
R_W
XO block power down in PHY2.0
·
1’b0 : XO block power up (PLL reference is XO
block output)
·
1’b1 : XO block power down (PLL reference is
clk_core input)
Note : clk_sel[1:0] bus must be set to 2’b00
1’b1
pll_powerdown
[1]
R_W
PLL power down in PHY2.0
·
1’b0 : PLL power up. The digital logic uses a 480
MHz clock.
·
1’b1 : PLL power down. The digital logic uses a
48-MHz clock. This mode is valid for full-speed and
low-speed operation in a host application, and only
full-speed operation in a device application. The
clk_sel[1:0] bus must be set to 2’b00 (48MHz) when
pll_powerdown is asserted high. PLL power down
mode is not supported with 12/24 MHz reference
clock inputs.
1’b1
force_suspend
[0]
R_W
Apply Suspend signal for power save
·
1’b0 : disable ( Normal Operation)
·
1’b1 : enable
1’b1