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
文件頁數(shù)： 14/100頁
文件大?。?/td> 1039K
代理商： DSP56367UM
Parallel Host Interface (HDI08)
DSP56367 Technical Data, Rev. 2.1
2-10
Freescale Semiconductor
HCS
HA10
PB13
Input
Input
Input, Output, or
Disconnected
GPIO
Disconnected
Host Chip Select—
When HDI08 is programmed to interface a
nonmultiplexed host bus and the HI function is selected, this signal is the host
chip select (HCS) input. The polarity of the chip select is programmable, but
is configured active-low (HCS) after reset.
Host Address 10
—When HDI08 is programmed to interface a multiplexed
host bus and the HI function is selected, this signal is line 10 of the host
address (HA10) input bus.
Port B 13
—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.
HOREQ/
HOREQ
HTRQ/
HTRQ
PB14
Output
Output
Input, Output, or
Disconnected
GPIO
Disconnected
Host Request
—When HDI08 is programmed to interface a single host
request host bus and the HI function is selected, this signal is the host request
(HOREQ) output. The polarity of the host request is programmable, but is
configured as active-low (HOREQ) following reset. The host request may be
programmed as a driven or open-drain output.
Transmit Host Request—
When HDI08 is programmed to interface a double
host request host bus and the HI function is selected, this signal is the transmit
host request (HTRQ) output. The polarity of the host request is
programmable, but is configured as active-low (HTRQ) following reset. The
host request may be programmed as a driven or open-drain output.
Port B 14
—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.
HACK/
HACK
HRRQ/
HRRQ
PB15
Input
Output
Input, Output, or
Disconnected
GPIO
Disconnected
Host Acknowledge
—When HDI08 is programmed to interface a single host
request host bus and the HI function is selected, this signal is the host
acknowledge (HACK) Schmitt-trigger input. The polarity of the host
acknowledge is programmable, but is configured as active-low (HACK) after
reset.
Receive Host Request
—When HDI08 is programmed to interface a double
host request host bus and the HI function is selected, this signal is the receive
host request (HRRQ) output. The polarity of the host request is
programmable, but is configured as active-low (HRRQ) after reset. The host
request may be programmed as a driven or open-drain output.
Port B 15
—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.
Table 2-9 Host Interface (continued)
Signal Name
Type
State During
Reset
Signal Description
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