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5.4 Peripheral Settings Control Register (PER_SET_CNTL)
SRIO Registers
Figure 60. Peripheral Settings Control Register (PER_SET_CNTL)
31-27 26 25 24 23-21 20-18 17-16
Reserved SW_M LOOP BOOT Reserved TX_PRI2_WM TX_PRI1_WM
EM_S BACK _COM
LEEP_ PLETE
OVER
RIDE
R-0x00 RW- RW- RW- R-0x00 RW-0x01 RW-0x02
0x01 0x00 0x00
LEGEND: R = Read only; - n = value after reset
15 14-12 11-9 8 7-4 3 2 1 0
TX_P TX_PRI0_WM CBA_TRANS_PRI 1X_M PRESCALER_SELECT ENPLL ENPLL ENPLL ENPLL
RI1_W ODE 4 3 2 1
M
RW- RW-0x03 RW-0x00 RW- RW-0x0000 RW- RW- RW- RW-
0x02 0x00 0x00 0x00 0x00 0x00
LEGEND: R = Read only; - n = value after reset
Table 31. Peripheral Settings Control Register (PER_SET_CNTL) Field Descriptions
Bit Field Value Description
31-27 Reserved Reserved
26 SW_MEM_SLEE Software Memory Sleep Override
P_OVERRIDE
0b Memories are put in sleep mode while in shutdown
1b Memories are not put in sleep mode while in shutdown
25 LOOPBACK Loopback mode.
0b Normal operation
1b Loop back mode. Transmit data to receive on the same port. Packet data is looped back in the
digital domain before the SERDES macros.
24 BOOT_COMPLE Controls ability to write any register during initialization. It also includes read only registers during
TE normal mode of operation that have application defined reset value.
0b Write to read only registers enabled
1b Write to read only registers disabled. Usually the boot_complete is asserted once after reset to
define power on configuration.
23-21 Reserved Reserved
20-18 TX_PRI2_WM Transmit credit threshold. Sets the required number of logical layer TX buffers needed to send
priority 2 packets across the UDI interface. This is valid for all ports in 1X mode only.
Required buffer count for transmit credit threshold 2 value (TX_PRI2_WM):
000 8, 7, 6, 5, 4, 3, 2, 1
001 8, 7, 6, 5, 4, 3, 2
010 8, 7, 6, 5, 4, 3
011 8, 7, 6, 5, 4
100 8, 7, 6, 5
101 8, 7, 6
110 8, 7
111 8
SPRU976 March 2006 Serial RapidIO (SRIO) 101
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