Texas TMS320C645X Manuale Utente
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5.79
Port Response Time-Out Control CSR (SP_RT_CTL)
SRIO Registers
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.
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)
181