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SRIO Registers

5.91 Port IP Discovery Timer for 4x Mode Register (SP_IP_DISCOVERY_TIMER)

The port IP discovery timer for 4x mode register (SP_IP_DISCOVERY_TIMER) is shown in Figure 154 and described in Table 176.

Figure 154. Port IP Discovery Timer for 4x Mode Register (SP_IP_DISCOVERY_TIMER) - Address

Offset 12000h

31

28

27

24

23

20

19

16

 

DISCOVERY_TIMER

 

Reserved

 

PW_TIMER

 

Reserved

 

R/W-9h

 

R-0h

 

R/W-8h

 

R-0h

15

 

 

 

 

 

 

0

 

 

 

Reserved

 

 

 

 

 

 

R-0000h

 

 

 

LEGEND: R/W = Read/Write; R = Read only; -n= Value after reset

 

 

 

 

Table 176. Port IP Discovery Timer for 4x Mode Register (SP_IP_DISCOVERY_TIMER) Field

Descriptions

Bit

Field

Value

Description

31–28

DISCOVERY_TIMER

 

Discovery timer for 4x mode. The discovery timer allows time for the link partner

 

 

 

to enter its DISCOVERY state and if the link partner is supporting 4x mode, for

 

 

 

all 4 lanes to be aligned.

 

 

0000b

Reserved

 

 

0001b

0.84 ms

 

 

0010b

0.84 ms x 2 = 1.68 ms

 

 

...

...

 

 

1001b

0.84 ms x 9= 7.56 ms (default)

 

 

...

...

 

 

1111b

0.84 ms x 15= 12.6 ms

27–24

Reserved

0000b

These read-only bits return 0s when read.

23–20

PW_TIMER

 

Port-write timer. The timer defines a period to repeat sending an error reporting

 

 

 

port-write request for software assistance. The timer is stopped by software

 

 

 

writing to the error detect registers.

 

 

0000b

Disabled. Port-write is sent once only.

 

 

0001b

107 ms–214 ms

 

 

0010b

214 ms–321 ms

 

 

0100b

428 ms–535 ms

 

 

1000b

856 ms–963 ms (default)

 

 

Other

Reserved

19–0

Reserved

0000h

These read-only bits return 0s when read.

230

Serial RapidIO (SRIO)

SPRUE13A –September 2006

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Texas Instruments TMS320TCI648x manual Discoverytimer, Pwtimer