Datasheet

XIO2213B

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SCPS210F –OCTOBER 2008–REVISED MAY 2013

8.33 PHY Control Register

The PHY control register reads from or writes to a PHY register. See Table 8-25 for a complete

description of the register contents.

OHCI register offset: ECh

Default value: 0000 0000h

BIT NUMBER 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

RESET STATE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

BIT NUMBER 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

RESET STATE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Table 8-25. PHY Control Register Description

BIT FIELD NAME TYPE DESCRIPTION

31 rdDone RU Read done. Bit 31 is cleared to 0b by the controller when either bit 15 (rdReg) or bit 14 (wrReg) is set

to 1b. This bit is set to 1b when a register transfer is received from the PHY.

30-28 RSVD R Reserved. Bits 30-28 return 000b when read.

27-24 rdAddr RU Read address. This field is the address of the register most recently received from the PHY.

23-16 rdData RU Read data,\. This field is the contents of a PHY register that has been read.

15 rdReg RWU Read register. Bit 15 is set to 1b by software to initiate a read request to a PHY register, and is

cleared by hardware when the request has been sent. Bits 14 (wrReg) and 15 (rdReg) must not both

be set to 1b simultaneously.

14 wrReg RWU Write register. Bit 14 is set to 1b by software to initiate a write request to a PHY register, and is

cleared by hardware when the request has been sent. Bits 14 (wrReg) and 15 (rdReg) must not both

be set to 1b simultaneously.

13-12 RSVD R Reserved. Bits 13 and 12 return 00b when read.

11.8 regAddr RW Register address. This field is the address of the PHY register to be written or read. The default value

for this field is 0h.

7.0 wrData RW Write data. This field is the data to be written to a PHY register and is ignored for reads. The default

value for this field is 00h.

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