參數(shù)資料
型號(hào): MNSC140CORE
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: Quad Core 16-Bit Digital Signal Processor
中文描述: 四核16位數(shù)字信號(hào)處理器
文件頁(yè)數(shù): 14/88頁(yè)
文件大?。?/td> 983K
代理商: MNSC140CORE
MSC8122 Technical Data, Rev. 13
1-4
Freescale Semiconductor
Signals/Connections
1.4 Direct Slave Interface, System Bus, Ethernet, and
Interrupt Signals
The direct slave interface (DSI) is combined with the system bus because they share some common signal lines.
Individual assignment of a signal to a specific signal line is configured through internal registers.
Table 1-5
describes the signals in this group.
Note:
Although there are fifteen interrupt request (IRQ) connections to the core processors, there are multiple
external lines that can connect to these internal signal lines. After reset, the default configuration enables
only
IRQ[1–7]
, but includes two input lines each for
IRQ[1–3]
and
IRQ7
. The designer must select one line for
each required interrupt and reconfigure the other external signal line or lines for alternate functions.
Additional alternate IRQ lines and
IRQ[8–15]
are enabled through the GPIO signal lines.
Table 1-5.
DSI, System Bus, Ethernet, and Interrupt Signals
Signal Name
Type
Description
HD0
SWTE
Input/ Output
Input
Host Data Bus 0
Bit 0 of the DSI data bus.
Software Watchdog Timer Disable
.
It is sampled on the rising edge of PORESET signal.
HD1
DSISYNC
Input/ Output
Input
Host Data Bus 1
Bit 1 of the DSI data bus.
DSI Synchronous
Distinguishes between synchronous and asynchronous operation of the DSI. It is sampled on the rising
edge of PORESET signal.
HD2
DSI64
Input/ Output
Input
Host Data Bus 2
Bit 2 of the DSI data bus.
DSI 64
Defines the width of the DSI and SYSTEM Data buses. It is sampled on the rising edge of PORESET
signal.
HD3
MODCK1
Input/ Output
Input
Host Data Bus 3
Bit 3 of the DSI data bus.
Clock Mode 1
Defines the clock frequencies. It is sampled on the rising edge of PORESET signal.
HD4
MODCK2
Input/ Output
Input
Host Data Bus 4
Bit 4 of the DSI data bus.
Clock Mode 2
Defines the clock frequencies. It is sampled on the rising edge of PORESET signal.
HD5
CNFGS
Input/ Output
Input
Host Data Bus 5
Bit 5 of the DSI data bus.
Configuration Source
One signal out of two that indicates reset configuration mode. It is sampled on the rising edge of
PORESET signal.
HD[6–31]
Input/ Output
Host Data Bus 6–31
Bits 6–31 of the DSI data bus.
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