Miscellaneous registers (Misc)
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Doc ID 018672 Rev 1
12.4.23 MAC_CFG_CTR
register
The MAC_CFG_CTR is an R/W register which configures the MAC Ethernet internal source
clock. The register bit assignments is given in the next table.
Table 177.
USB2_PHY_CFG register bit assignments
USB2_PHY_CFG Register
0x0A4
Bit
Name
Reset Value
Description
[31:04]
RFU
-
Reserved for future use.
[03]
usbh_overcur
1’h0
USB host over-current: enable USB controller to enter
in power down state when an electrical overcurrent
condition is detected on the corresponding USB bus:
To check
1’b0: Disable functionality
1’b1: Enable over-current detection functionality.
[02:01]
RFU
-
Reserved for future use.
[00]
PLL_pwdn
1’h0
This bit controls the state of PLL blocks when in
Suspend mode
1’b0: PLL blocks powered up during Suspend mode
1’b1: PLL blocks powered down during Suspend mode
Table 178.
MAC_CFG_CTR register bit assignments
MAC_CFG_CTR Register
0x0A8
Bit
Name
Reset Value
Description
[31:05]
RFU
-
Reserved for future use (Write don’t care - Read
return zeros).
[04]
MAC_synt_enb
1’h0
MAC GMII/MII clock synthesizer enable:
1’b0: Disable MAC clock synthesizer: GMII/MII
clock is provided in agree with the MAC_clk_sel
source clock definitions.
1’b1: Enable MAC clock synthesizer: GMII/MII
clock is provided from clock synthesizer logic
(ref. MAC_CLK_SYNT_CFG register
description).
(1)
[03:02]
MAC_clk_sel
2’h0
MAC internal source clock definition
MII source clock definition table
Control
Bit
Source
clock
Description
2’b00
External
MII_txclk25’ signal
2’b01
Internal
PLL2 output clock
2’b10
External
24 MHz oscillator
2’b11
-
Reserved