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SRIO Registers

5.79Port Response Time-Out Control CSR (SP_RT_CTL)

Figure 135. Port Response Time-Out Control CSR (SP_RT_CTL)

 

31-16

 

TIMEOUT_VALUE

 

RW-0xFFFFFF

LEGEND: R = Read only; -n= value after reset

 

15-8

7-0

TIMEOUT_VALUE

Reserved

RW-0xFFFFFF

R-0x00

LEGEND: R = Read only; -n= value after reset

 

Table 109. Port Response Time-Out Control CSR (SP_RT_CTL) Field Descriptions

Bit

Field

Value Description

31-8

TIMEOUT_VALU

Timeout value for all ports on the device. This timeout is for sending a packet to receiving the

 

E

corresponding response packet. Max value represents 3-6 seconds. The timeout duration can be

 

 

expressed as: Timeout = 15 * ((Prescale value + 1) * DMA clock period * Timeout Value); where

 

 

Prescale value is set in 0x0020 PSCR and the Timeout value is the decimal representation of this

 

 

register value. Example: 400Mhz DMA, Prescalar 0100b, Timeout Value FFFFFFh; Timeout

 

 

duration = 15*(4+1)*2.5nS*16777216 = 3.15s.

7-0

Reserved

Reserved

SPRU976 –March 2006

Serial RapidIO (SRIO)

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Texas Instruments TMS320C645x manual Port Response Time-Out Control CSR Sprtctl