Preliminary
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Registers
4.3.2 GPIO_SYSCONFIG Register
The GPIO_SYSCONFIG register controls the various parameters of the L4 interconnect. The
GPIO_SYSCONFIG register is shown in
and described in
NOTE:
When the AUTOIDLE bit is set, the GPIO_DATAIN read command has a 3 OCP cycle
latency due to the data in sample gating mechanism. When the AUTOIDLE bit is not set,
the GPIO_DATAIN read command has a 2 OCP cycle latency.
Figure 4-8. GPIO_SYSCONFIG Register
31
16
Reserved
R-0
15
5
4
3
2
1
0
Reserved
IDLEMODE
Reserved
SOFTRESET
AUTOIDLE
R-0
R/W-0
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 4-3. GPIO_SYSCONFIG Register Field Descriptions
Bit
Field
Value
Description
31-5
Reserved
0
Reserved
4-3
IDLEMODE
Power Management, Req/Ack control
0
Force-idle. An idle request is acknowledged unconditionally
1h
No-idle. An idle request is never acknowledged
2h
Smart-idle. Acknowledgment to an idle request is given based on the internal activity of the module
3h
Smart-idle.
2
Reserved
0
Reserved. Always write the default value for future device compatibility.
1
SOFTRESET
Software reset. This bit is automatically reset by the hardware. During reads, it always returns 0.
0
Normal mode
1
The module is reset
0
AUTOIDLE
Internal interface clock gating strategy
0
Internal Interface OCP clock is free-running
1
Automatic internal OCP clock gating, based on the OCP interface activity
539
SPRUGX9 – 15 April 2011
General-Purpose I/O (GPIO) Interface
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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