Texas TMS320C645X User Manual
www.ti.com
5.85
Port Control CSR n (SPn_CTL)
SRIO Registers
Each of the four ports is supported by a register of this type.
Figure 141. Port Control CSR n (SPn_CTL)
31-30
29-27
26-24
23
22
21
20
19
18-16
PORT_WIDTH
INITIALIZED_PORT_WI PORT_WIDTH_OVERRI
PORT
OUTP
INPUT
ERRO
MULTI
Reserved
DTH
DE
_DISA
UT_P
_POR
R_CH
CAST
BLE
ORT_
T_EN
ECK_
_PAR
ENAB
ABLE
DISAB
TICIP
LE
LE
ANT
R-0x01
R-0x00
RW-0x00
RW-
RW-
RW-
RW-
RW-
R-0x00
0x00
0x00
0x00
0x00
0x00
LEGEND: R = Read only; -n = value after reset
15-4
3
2
1
0
Reserved
STOP
DROP
PORT
PORT
_POR
_PAC
_LOC
_TYPE
T_FLD KET_E
KOUT
_ENC
NABL
_ENA
E
BLE
R-0x00
RW-
RW-
RW-
R-
0x00
0x00
0x00
0x01
LEGEND: R = Read only; -n = value after reset
Table 115. Port Control CSR n (SPn_CTL) Field Descriptions
Bit
Field
Value
Description
31-30
PORT_WIDTH
Hardware width of the port (read only). Only 00b is valid for SP1, SP2, and SP3
00b
Single-lane port
01b
Four-lane port
10b-11b Reserved
29-27
INITIALIZED_PO
Width of the ports after initialized (read only)
RT_WIDTH
000b
Single-lane port, lane 0
001b
Single-lane port, lane 2
010b
Four-lane port
011b-
Reserved
111b
26-24
PORT_WIDTH_O
Soft port configuration to override the hardware size
VERRIDE
000b
No override
001b
Reserved
010b
Force single lane, lane 0
011b
Force single lane, lane 2
100b-
Reserved
111b
23
PORT_DISABLE
Port disable
0b
Port receivers/drivers are enabled
1b
Port receivers/drivers are disabled and are unable to receive/transmit to any packets or control
symbols
symbols
22
OUTPUT_PORT_
Output port enable
ENABLE
0b
Port is stopped and not enabled to issue any packets except to route or respond to I/O logical
MAINTENANCE packets, depending upon the functionality of the processing element. Control
symbols are not affected and are sent normally.
MAINTENANCE packets, depending upon the functionality of the processing element. Control
symbols are not affected and are sent normally.
1b
Port is enabled to issue any packets
188
Serial RapidIO (SRIO)
SPRU976 – March 2006