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TMS320C6670 Peripheral Information and Electrical Specifications
Copyright 2012 Texas Instruments Incorporated
SPRS689D—March 2012
Multicore Fixed and Floating-Point System-on-Chip
TMS320C6670
7.5.2.4 PLLDIV Divider Ratio Change Status Register (DCHANGE)
Whenever a different ratio is written to the PLLDIV
n
registers, the PLLCTL flags the change in the DCHANGE
Status Register. During the GO operation, the PLL controller will change only the divide ratio of the SYSCLKs with
the bit set in DCHANGE. Note that the ALNCTL Register determines if that clock also needs to be aligned to other
clocks. The PLLDIV Divider Ratio Change Status Register is shown in
and described in
.
7.5.2.5 SYSCLK Status Register (SYSTAT)
The SYSCLK Status Register (SYSTAT) shows the status of SYSCLK[11:1]. SYSTAT is shown in
described in
Figure 7-11
PLLDIV Divider Ratio Change Status Register (DCHANGE)
31
8
7
6
5
4
3
2
1
0
Reserved
SYS8
Reserved
SYS5
Reserved
SYS2
Reserved
R-0
R/W-0
R-0
R/W-0
R-0
R/W-0
R-0
Legend: R/W = Read/Write; R = Read only; -
n
= value after reset, for reset value
Table 7-18
PLLDIV Divider Ratio Change Status Register Field Descriptions
Bit
Field
Description
31-8
6-5
3-2
0
Reserved
Reserved. This bit location is always read as 0. A value written to this field has no effect.
7
4
1
SYS8
SYS5
SYS2
Identifies when the SYSCLK
n
divide ratio has been modified.
0 = SYSCLK
n
ratio has not been modified. When GOSET is set, SYSCLK
n
will not be affected.
1 = SYSCLK
n
ratio has been modified. When GOSET is set, SYSCLK
n
will change to the new ratio.
End of Table 7-18
Figure 7-12
SYSCLK Status Register (SYSTAT)
31
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
SYS11ON
SYS10ON
SYS9ON
SYS8ON
SYS7ON
SYS6ON
SYS5ON
SYS4ON
SYS3ON
SYS2ON
SYS1ON
R-n
R-1
R-1
R-1
R-1
R-1
R-1
R-1
R-1
R-1
R-1
R-1
Legend: R/W = Read/Write; R = Read only; -
n
= value after reset
Table 7-19
SYSCLK Status Register Field Descriptions
Bit
Field
Description
31-11
Reserved
Reserved. This location is always read as 0. A value written to this field has no effect.
10-0 SYS[N
(1)
]ON
1 Where N = 1, 2, 3,....N (Not all these output clocks may be used on a specific device. For more information, see the device-specific data manual)
SYSCLK[N]
on status
0 = SYSCLK[N]
is gated
1 = SYSCLK[N]
is on
End of Table 7-19
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