參數(shù)資料
型號: TMS32C6415CGLSA6E3
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: FIXED-POINT DIGITAL SIGNAL PROCESSORS
中文描述: 定點數(shù)字信號處理器
文件頁數(shù): 71/141頁
文件大?。?/td> 2234K
代理商: TMS32C6415CGLSA6E3
TMS320C6414, TMS320C6415, TMS320C6416
FIXED-POINT DIGITAL SIGNAL PROCESSORS
SPRS146N
FEBRUARY 2001
REVISED MAY 2005
71
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
1443
31
16
15
14
13
12
11
10
9
8
Reserved
Enable or
Non-Enabled
Interrupt Wake
Enabled
Interrupt Wake
PD3
PD2
PD1
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
7
0
Legend:
R/W
x = Read/write reset value
NOTE: The shadowed bits are not part of the power-down logic discussion and therefore are not covered here. For information on these other
bit fields in the CSR register, see the
TMS320C6000 CPU and Instruction Set Reference Guide
(literature number SPRU189).
Figure 10. PWRD Field of the CSR Register
A delay of up to nine cycles may occur after the instruction that sets the PWRD bits in the CSR before the PD
mode takes effect. As best practice, NOPs should be padded after the PWRD bits are set in the CSR to account
for this delay.
If PD1 mode is terminated by a non-enabled interrupt, the program execution returns to the instruction where
PD1 took effect. If PD1 mode is terminated by an enabled interrupt, the interrupt service routine will be executed
first, then the program execution returns to the instruction where PD1 took effect. In the case with an enabled
interrupt, the GIE bit in the CSR and the NMIE bit in the interrupt enable register (IER) must also be set in order
for the interrupt service routine to execute; otherwise, execution returns to the instruction where PD1 took effect
upon PD1 mode termination by an enabled interrupt.
PD2 and PD3 modes can only be aborted by device reset. Table 32 summarizes all the power-down modes.
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