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TUSB3210PM Arkusz danych(PDF) 15 Page - Texas Instruments

Numer części TUSB3210PM
Szczegółowy opis  UNIVERSAL SERIAL BUS GENERAL-PURPOSE DEVICE CONTROLLER
PDF  44 Pages
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

TUSB3210PM Arkusz danych(HTML) 15 Page - Texas Instruments

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2–3
2.2.2
MCNFG: MCU Configuration Register
This register is used to control the MCU clock rate.
7
6
5
4
3
210
12/48
XINT
RSV
R3
R2
R1
R0
SDW
R/W
R/W
R/O
R/O
R/O
R/O
R/O
R/W
BIT
NAME
RESET
FUNCTION
0
SDW
0
This bit enables/disables boot ROM. In the ROM version of the controller, this bit has no effect.
SDW = 0
When clear, MCU executes from the 6k boot ROM space. The boot ROM appears in two
locations: 0000 and 8000h. The 8k RAM is mapped to XDATA space; therefore, Read/Write
operation is possible. This bit is set by MCU after the RAM load is completed. MCU cannot
clear this bit. It is cleared on power-up-reset or function reset.
SDW = 1
When set by MCU, the 6k boot ROM maps to location 8000h, and the 8k RAM is mapped to
code-space, starting at location 0000h. At this point, MCU executes from RAM, and write
operation is disabled (No write operation is possible in code space).
4–1
R[3:0]
No affect
These bits reflect the device revision number
5
RSV
0
Reserved
6
XINT
0
INT1 source control bit.
XINT = 0 INT1 is connected to P3.3-pin and operates as a standard INT1 interrupt
XINT = 1 INT1 is connected to the OR of Port–2 inputs.
7
12/48
0
This bit selects 12 or 48MHz clock for MCU
12/48 = 0 12 MHz
12/48 = 1 48 MHz
2.2.3
PUR_n: GPIO Pullup Register for Port n (n = 0 to 3)
7
6
5
4
3
210
Pin7
Pin6
Pin5
Pin4
Pin3
Pin2
Pin1
Pin0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BIT
NAME
RESET
FUNCTION
0–7
PinN
(N = 0 to 7)
0
The MCU may write to this register. If the MCU sets this bit to 1, the pullup resistor is disconnected from
the pin. If the MCU clears this bit to 0, the pullup resistor is connected to the pin. The pullup resistor is
connected to VCC power supply.
2.2.4
INTCFG: Interrupt Configuration
7
6
5
4
3
210
RSV
RSV
RSV
RSV
I3
I2
I1
I0
R/O
R/O
R/O
R/O
R/W
R/W
R/W
R/W
BIT
NAME
RESET
FUNCTION
0–3
I[3:0]
0010
The MCU may write to this register to set the interrupt delay time for Port 2 on the MCU. The value of the
lower nibble represents the delay in ms. Default after reset is 2 ms.
4–7
RSV
0
Reserved



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