參數(shù)資料
型號(hào)： DSP56367UM
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
元件分類： 數(shù)字信號(hào)處理
英文描述： 24-Bit Audio Digital Signal Processor
中文描述： 24位音頻數(shù)字信號(hào)處理器
文件頁(yè)數(shù)： 12/100頁(yè)
文件大?。?/td> 1039K
代理商： DSP56367UM
Parallel Host Interface (HDI08)
DSP56367 Technical Data, Rev. 2.1
2-8
Freescale Semiconductor
2.10
Parallel Host Interface (HDI08)
The HDI08 provides a fast, 8-bit, parallel data port that may be connected directly to the host bus. The
HDI08 supports a variety of standard buses and can be directly connected to a number of industry standard
microcomputers, microprocessors, DSPs, and DMA hardware.
Table 2-9 Host Interface
Signal Name
Type
State During
Reset
Signal Description
H0–H7
HAD0–HAD7
PB0–PB7
Input/
Output
Input/
Output
Input, Output, or
Disconnected
GPIO
Disconnected
Host Data—
When HDI08 is programmed to interface a nonmultiplexed host
bus and the HI function is selected, these signals are lines 0–7 of the
bidirectional, tri-state data bus.
Host Address/Data—
When HDI08 is programmed to interface a multiplexed
host bus and the HI function is selected, these signals are lines 0–7 of the
address/data bidirectional, multiplexed, tri-state bus.
Port B 0–7
—When the HDI08 is configured as GPIO, these signals are
individually programmable as input, output, or internally disconnected.
The default state after reset for these signals is GPIO disconnected.
These inputs are 3.3V tolerant.
HA0
HAS/HAS
PB8
Input
Input
Input, Output, or
Disconnected
GPIO
Disconnected
Host Address Input 0
—When the HDI08 is programmed to interface a
nonmultiplexed host bus and the HI function is selected, this signal is line 0 of
the host address input bus.
Host Address Strobe—
When HDI08 is programmed to interface a
multiplexed host bus and the HI function is selected, this signal is the host
address strobe (HAS) Schmitt-trigger input. The polarity of the address strobe
is programmable, but is configured active-low (HAS) following reset.
Port B 8
—When the HDI08 is configured as GPIO, this signal is individually
programmed as input, output, or internally disconnected.
The default state after reset for this signal is GPIO disconnected.
This input is 3.3V tolerant.
HA1
HA8
PB9
Input
Input
Input, Output, or
Disconnected
GPIO
Disconnected
Host Address Input 1
—When the HDI08 is programmed to interface a
nonmultiplexed host bus and the HI function is selected, this signal is line 1 of
the host address (HA1) input bus.
Host Address 8
—When HDI08 is programmed to interface a multiplexed host
bus and the HI function is selected, this signal is line 8 of the host address
(HA8) input bus.
Port B 9
—When the HDI08 is configured as GPIO, this signal is individually
programmed as input, output, or internally disconnected.
The default state after reset for this signal is GPIO disconnected.
This input is 3.3V tolerant.
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