10 PHY Register Configuration

There are 16 accessible internal registers in the PCI7x21/PCI7x11 controller. The configuration of the registers at addresses 0h through 7h (the base registers) is fixed, whereas the configuration of the registers at addresses 8h through Fh (the paged registers) is dependent upon which one of eight pages, numbered 0h through 7h, is currently selected. The selected page is set in base register 7h.

10.1 Base Registers

Table 10−1 shows the configuration of the base registers, and Table 10−2 shows the corresponding field descriptions. The base register field definitions are unaffected by the selected page number.

A reserved register or register field (marked as Reserved in the following register configuration tables) is read as 0, but is subject to future usage. All registers in address pages 2 through 6 are reserved.

Table 10−1. Base Register Configuration

ADDRESS

 

 

 

 

 

BIT POSITION

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

1

 

2

3

4

5

6

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000

 

 

 

 

Physical ID

 

 

R

CPS

 

 

 

 

 

 

 

 

 

0001

RHB

 

IBR

 

 

 

Gap_Count

 

 

 

 

 

 

 

 

 

 

 

 

0010

 

Extended (111b)

 

Reserved

 

Total_Ports (0010b)

 

 

 

 

 

 

 

 

0011

Max_Speed (010b)

 

Reserved

 

Delay (0000b)

 

 

 

 

 

 

 

 

 

 

 

0100

LCtrl

 

C

 

 

Jitter (000b)

 

 

Pwr_Class

 

 

 

 

 

 

 

 

 

 

 

 

0101

Watchdog

 

ISBR

 

Loop

Pwr_fail

Timeout

Port_event

Enab_accel

Enab_multi

 

 

 

 

 

 

 

 

 

 

 

0110

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

0111

 

 

Page_Select

 

Reserved

 

Port_Select

 

 

 

 

 

 

 

 

 

 

 

 

10−1

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Texas Instruments PCI7421, PCI7411 Base Registers, 1. Base Register Configuration, Address BIT Position, Rhb Ibr, Isbr