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參數(shù)資料
| 型號： | QUADS68040UM_D |
| 英文描述： | M68360QUADS-040 User＇s Manual |
| 中文描述： | M68360QUADS - 040使用手冊 |
| 文件頁數(shù)： | 17/86頁 |
| 文件大?。?/td> | 1351K |
| 代理商： | QUADS68040UM_D |
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Freescale Semiconductor, Inc.
OPERATING INSTRUCTIONS
17
3 - OPERATING INSTRUCTIONS
3.1
INTRODUCTION
This chapter provides necessary information to use the M68360QUADS-040 in host-controlled and stand-
alone configurations. This includes controls and indicators, memory map details, and software initialization
of the board.
3.2
CONTROLS AND INDICATORS
The M68360QUADS-040 has the following switches and indicators.
3.2.1
SOFT RESET Switch SW1
The SOFT RESET switch, SW1, resets all M68360QUADS-040 devices, and resets the EC040, and
performs soft reset to the QUICC internal modules, maintaining QUICC’s configuration (clocks & chip-
selects) . The switch signal is debounced, and it is not possible to disable it by software.
3.2.2
ABORT Switch SW2
The ABORT switch is normally used to abort program execution by issuing a level 7 interrupt to the EC040
to return control to the QUICC040Bug. The ABORT switch signal is debounced and can not be disabled
by software.
3.2.3
HARD RESET - Switches SW1 & SW2
When BOTH switches - SW1 and SW2 are depressed simultaneously, HARD reset is generated to both
the EC040 and QUICC. When the QUICC is HARD reset, all its configuration is lost and has to be re-
initialized.
3.2.4
EEST Configuration Jumpers J1 to J6
The following jumpers J1 to J6 are used to determine the EEST operation modes according to the
description below:
3.2.4.1
TPEN Jumper - J1
The TPEN (Twisted Pair Enable) jumper, determines the interface type of the EEST ethernet port. When
in position along with J2, the EEST port uses the AUI interface. When removed and J2 in position, the
interface type is twisted pair.
WARNING
Whenever J2 is to be removed, J1 MUST be removed PRIOR
to the removal of J2. Failure in doing so, might result in
permanent damage to EEST device (U7).
3.2.4.2
APORT Jumper - J2
When the APORT (Automatic Port Selection Enable) jumper - J2 is in position, the interface type of the
EEST device is selected manually via J1. When J2 is removed, the selection is done automatically
according to the presence of link beats on the twisted pair receive input.
3.2.4.3
TPAPCE Jumper - J3
When the TPAPCE (Twisted Pair Automatic Polarity Correction Enable) jumper - J3 is removed, the EEST
device corrects internally polarity faults and indicates them via the TPPLR led - LD6. When J3 is in position,
automatic polarity correction is disabled.
3.2.4.4
TPSQEL Jumper - J4
F
For More Information On This Product,
Go to: www.freescale.com
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