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參數(shù)資料
| 型號(hào)： | XCB56011BU95 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | 24-BIT DVD DIGITAL SIGNAL PROCESSOR |
| 中文描述： | 8-BIT, 95 MHz, OTHER DSP, PQFP100 |
| 封裝： | PLASTIC, TQFP-100 |
| 文件頁數(shù)： | 15/82頁 |
| 文件大?。?/td> | 318K |
| 代理商： | XCB56011BU95 |
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Preliminary Information
MOTOROLA
DSP56011 Technical Data Sheet, Rev. 1
1-9
Signal/Connection Descriptions
Host Interface (HI)
PRELIMINARY
HOST INTERFACE (HI)
The HI provides a fast parallel data to 8-bit port, which may be connected directly to
the host bus. The HI supports a variety of standard buses, and can be directly
and DMA hardware.
Table 1-6
Host Interface
Signal Name
Type
State During
Reset
Signal Description
H0–H7
PB0–PB7
Input/
Output
Input
Host Data Bus (H0–H7)
—This data bus transfers data
between the host processor and the DSP56011.
When configured as a Host Interface port, the H0–H7
signals are tri-stated as long as HEN is deasserted. The
signals are inputs unless HR/ W is high and HEN is
asserted, in which case H0–H7 become outputs, allowing
the host processor to read the DSP56011 data. H0–H7
become outputs when HACK is asserted during HOREQ
assertion.
Port B GPIO 0–7 (PB0–PB7)
—These signals are General
Purpose I/ O signals (PB0–PB7) when the Host Interface is
not selected.
After reset, the default state for these signals is GPIO input.
HOA0–HOA2
PB8–PB10
Input
Input/
Output
Input
Host Address0–Host Address 2 (HOA0–HOA2)
—These
inputs provide the address selection for each Host
Interface register.
Port B GPIO 8–10 (PB8–PB10)
—These signals are General
Purpose I/ O signals (PB8–PB10) when the Host Interface is
not selected.
After reset, the default state for these signals is GPIO
input.
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