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TMS320C6454 データシート(Datasheet) 59 Page - Texas Instruments

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部品番号. TMS320C6454
部品情報  Fixed-Point Digital Signal Processor
ダウンロード  225 Pages
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
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3.4.3
Peripheral Configuration Register 1 Description
TMS320C6454
Fixed-Point Digital Signal Processor
SPRS311A – APRIL 2006 – REVISED DECEMBER 2006
The Peripheral Configuration Register (PERCFG1) is used to enable the EMIFA and DDR2 Memory
Controller. EMIFA and the DDR2 Memory Controller do not have corresponding status bits in the
Peripheral Status Registers. The EMIFA and DDR2 Memory Controller peripherals can be used within 16
SYSCLK3 cycles after EMIFACTL and DDR2CTL are set to 1. Once EMIFACTL and DDR2CTL are set to
1, they cannot be set to 0. Note that if the DDR2 Memory Controller and EMIFA are disabled at reset
through the device configuration pins (DDR2.EN[ABA0] and EMIFA[ABA1]), they cannot be enabled
through the PERCFG1 register.
31
8
Reserved
R-0x00
7
2
1
0
Reserved
DDR2CTL
EMIFACTL
R-0x00
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Figure 3-5. Peripheral Configuration Register 1 (PERCFG1) - 0x02AC 002C
Table 3-8. Peripheral Configuration Register 1 (PERCFG1) Field Descriptions
Bit
Field
Value
Description
31:2
Reserved
Reserved.
1
DDR2CTL
Mode Control for DDR2 Memory Controller. Once this bit is set to 1, it cannot be changed to 0.
0
Set DDR2 to disabled
1
Set DDR2 to enabled
0
EMIFACTL
Mode control for EMIFA. Once this bit is set to 1, it cannot be changed to 0. This bit defaults to 1 if
EMIFA 8-bit ROM boot is used (BOOTMODE[3:0] = 0100b).
0
Set EMIFA to disabled
1
Set EMIFA to enabled
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Device Configuration
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