PCI7421 datasheet(210/298 Pages) TI

210 / 298 page

8−30

8.33 PHY Layer Control Register

The PHY layer control register reads from or writes to a PHY register. See Table 8−25 for a complete description of

the register contents.

Bit

Name

PHY layer control

Type

Default

Bit

Name

PHY layer control

Type

RWU

Default

PHY layer control

Offset:

ECh

Type:

Read/Write/Update, Read/Write, Read/Update, Read-only

Default:

0000 0000h

Table 8−25. PHY Control Register Description

BIT

FIELD NAME

TYPE

DESCRIPTION

rdDone

Bit 31 is cleared to 0 by the PCI7x21/PCI7x11 controller when either bit 15 (rdReg) or bit 14 (wrReg)

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

30−28

RSVD

Reserved. Bits 30−28 return 0s when read.

27−24

rdAddr

This field is the address of the register most recently received from the PHY layer.

23−16

rdData

This field is the contents of a PHY register that has been read.

rdReg

RWU

Bit 15 is set to 1 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 1

simultaneously.

wrReg

RWU

Bit 14 is set to 1 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 1

simultaneously.

13−12

RSVD

Reserved. Bits 13 and 12 return 0s when read.

11−8

regAddr

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

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.

PCI7421 Datasheet(PDF) 210 Page - Texas Instruments

PCI7421 Datasheet(HTML) 210 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL