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參數(shù)資料
| 型號(hào)： | TUSB3210GENPDK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | TUSB3210 Generic Evaluation Board(TUSB3210通用評(píng)估板) |
| 中文描述： | TUSB3210通用評(píng)估板（TUSB3210通用評(píng)估板） |
| 文件頁(yè)數(shù)： | 17/19頁(yè) |
| 文件大小： | 196K |
| 代理商： | TUSB3210GENPDK |
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Jumpers and Switches
2-3
EVM Operation
2.5
Jumpers and Switches
Table 2
–
2 is provided to help set up and configure the EVM platform jumpers
to the desired mode of operation. The EVM can download firmware code from
the PC through a loading program (which may or may not be supplied with your
EVM) or from an I
2
C EEPROM. A 5-V power source may be supplied from an
external source or from the USB cable. If supplied from an external source, U2
must be set to position 2
–
3. If supplied from the USB cable, set U2 to position
1
–
2. The 5-V source is used to generate 3.3 V using an LDO regulator. JP2
and JP3 are used to connect P3.0 and P3.1 to R1OUT and T1IN of the RS232
connector, respectively. JP4 must be set to off when not using the MCU
’
s
UART.
Table 2
–
2.Jumpers and Switches
Jumper/Switch
Jumper/Switch Description
U2
Position 1
–
2: 5-V bus power supply; position 2
–
3: 5-V dc or 5-V switching supply
JP2
Position 1
–
2 on: connect P3.0 to R1OUT; position 1
–
2 off: disconnect P3.0 from R1OUT
JP3
Position 1
–
2 on: connect P3.1 to T1IN; position 1
–
2 off: disconnect P3.1 from T1IN
JP4
Position 1
–
2 on: enable RS
–
232 port; position 1
–
2 off: disable RS
–
232 port
2.6
EEPROM
The I
2
C EEPROM is used to provide application-specific firmware. The
TUSB3210 automatically reads the EEPROM at power up via the I
2
C bus. A
header must be added to the application firmware before loading into the
EEPROM. Please refer to the
TUSB3210 Bootcode
document for a
description of the header definition. The header may be generated
automatically using the
I
2
C Header Generation Utility
software provided with
the device.
The EVM ships with a preprogrammed EEPROM that has either keyboard
controller firmware or compact flash reader firmware. It enumerates properly
when connected to a USB host.
2.7
GPIO Connector
The 50-pin GPIO connector provides access to the TUSB3210 GPIOs as well
as some other control signals. Figure 2
–
1 shows the signals available on the
connector.
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