參數(shù)資料
型號: MNSC140CORE
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
元件分類: 數(shù)字信號處理
英文描述: Quad Core 16-Bit Digital Signal Processor
中文描述: 四核16位數(shù)字信號處理器
文件頁數(shù): 34/88頁
文件大?。?/td> 983K
代理商: MNSC140CORE
MSC8122 Technical Data, Rev. 13
1-24
Freescale Semiconductor
Signals/Connections
1.8 EOnCE Event and JTAG Test Access Port Signals
The MSC8122 uses two sets of debugging signals for the two types of internal debugging modules: EOnCE and the
JTAG TAP controller. Each internal SC140 core has an EOnce module, but they are all accessed externally by the
same two signals
EE0
and
EE1
. The MSC8122 supports the standard set of test access port (TAP) signals defined by
IEEE
1149.1 Standard Test Access Port and Boundary-Scan Architecture specification and described in
Table 1-9
.
1.9 Reserved Signals
ETHCRS
ETHRXD
Input
Input
Carrier Sense
In MII mode, indicates that either the transmit or receive medium is non-idle.
Ethernet Receive Data
In SMII mode, used for the Ethernet receive data.
Table 1-9.
JTAG TAP Signals
Signal Name
Type
Signal Description
EE0
Input
EOnCE Event Bit 0
Puts the internal SC140 cores into Debug mode.
EE1
Output
EOnCE Event Bit 1
Indicates that at least one on-device SC140 core is in Debug mode.
TCK
Input
Test Clock—
Synchronizes JTAG test logic.
TDI
Input
Test Data Input—
A test data serial signal for test instructions and data. TDI is sampled on the rising edge
of TCK and has an internal pull-up resistor.
TDO
Output
Test Data Output—
A test data serial signal for test instructions and data. TDO can be tri-stated. The
signal is actively driven in the shift-IR and shift-DR controller states and changes on the falling edge of
TCK.
TMS
Input
Test Mode Select—
Sequences the test controller state machine, is sampled on the rising edge of TCK,
and has an internal pull-up resistor.
TRST
Input
Test Reset—
Asynchronously initializes the test controller; must be asserted during power up.
Table 1-10.
Reserved Signals
Signal Name
Type
Signal Description
TEST
Input
Test
For manufacturing testing. You
must
connect this pin to GND.
Table 1-8.
Dedicated Ethernet Signals
Signal Name
Type
Signal Description
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