參數(shù)資料
型號: TMP320C6413GTS400
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): 48/140頁
文件大?。?/td> 1958K
代理商: TMP320C6413GTS400
Device Configurations
48
April 2004
Revised May 2005
SPRS247E
3.4
Peripheral Configuration Lock
By default, the McASP1, McASP0, I2C1, and I2C0 peripherals are disabled on power up. In order to use these
peripherals on the C6413/C6410 device, the peripheral must first be enabled in the Peripheral Configuration
register (PERCFG).
Software muxed pins should not be programmed to switch functionalities during
run-time. Care should also be taken to ensure that no accesses are being performed before disabling
the peripherals.
To help minimize power consumption in the C6413/C6410 device, unused peripherals may
be disabled..
Figure 3
2 shows the flow needed to enable (or disable) a given peripheral on the C6413/C6410 device.
Unlock the PERCFG Register
Using the PCFGLOCK Register
Write to
PERCFG Register
to Enable/Disable Peripherals
Read from
PERCFG Register
Wait 128 CPU Cycles Before
Accessing Enabled Peripherals
Figure 3
2. Peripheral Enable/Disable Flow Diagram
A 32-bit key (value = 0x10C0010C) must be written to the Peripheral Configuration Lock register
(PCFGLOCK) in order to unlock access to the PERCFG register. Reading the PCFGLOCK register
determines whether the PERCFG register is currently locked (LOCKSTAT bit = 1) or unlocked (LOCKSTAT
bit = 0), see Figure 3
3. A peripheral can only be enabled when the PERCFG register is “unlocked”
(LOCKSTAT bit = 0).
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