UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 86
UPSD3234AV-24U1T
Manufacturer Part Number
UPSD3234AV-24U1T
Description
Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
Manufacturer
STMicroelectronics
Datasheet
1.UPSD3234AV-24U1T.pdf
(170 pages)
- Current page: 86 of 170
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uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
Table 72. Description of the UCON1 Bits
Table 73. USB Control Register (UCON2: 0ECh)
Table 74. Description of the UCON2 Bits
Table 75. USB Endpoint0 Status Register (USTA: 0EDh)
86/170
RSEQ
3 to 0
7 to 5
Bit
Bit
—
7
6
5
4
7
4
3
2
1
0
7
TP1SIZ3 to
EP12SEL
FRESUM
TP1SIZ0
Symbol
Symbol
STALL2
STALL1
SETUP
TSEQ1
SOUT
TX1E
EP2E
EP1E
—
—
6
6
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
—
IN
5
5
Endpoint 1/ Endpoint 2 Transmit Data Packet PID. (0=DATA0, 1=DATA1)
This bit determines which type of data packet (DATA0 or DATA1) will be
sent during the next IN transaction directed to Endpoint 1 or Endpoint 2.
Toggling of this bit must be controlled by software. RESET clears this bit.
Endpoint 1/ Endpoint 2 Transmit Selection. (0=Endpoint 1, 1=Endpoint 2)
This bit specifies whether the data inside the registers UDT1 are used for
Endpoint 1 or Endpoint 2. If all the conditions for a successful Endpoint 2
USB response to a hosts IN token are satisfied (TXD1F=0, TX1E=1,
STALL2=0, and EP2E=1) except that the EP12SEL Bit is configured for
Endpoint 1, the USB responds with a NAK handshake packet. RESET
clears this bit.
Endpoint1 / Endpoint2 Transmit Enable.
This bit enables a transmit to occur when the USB Host Controller send
an IN token to Endpoint 1 or Endpoint 2. The appropriate endpoint
enable bit, EP1E or EP2E Bit in the UCON2 register, should also be set.
Software should set the TX1E Bit when data is ready to be transmitted. It
must be cleared by software when no more data needs to be transmitted.
If this bit is '0' or TXD1F is set, the USB will respond with a NAK
handshake to any Endpoint 1 or Endpoint 2 directed IN token.
RESET clears this bit.
Force Resume.
This bit forces a resume state (“K” on non-idle state) on the USB data
lines to initiate a remote wake-up. Software should control the timing of
the forced resume to be between 10ms and 15ms. Setting this bit will not
cause the RESUMF Bit to set.
The number of transmit data bytes. These bits are cleared by RESET.
Reserved
Status out is used to automatically respond to the OUT of a control
READ transfer
Endpoint2 enable. RESET clears this bit
Endpoint1 enable. RESET clears this bit
Endpoint2 Force Stall Bit. RESET clears this bit
Endpoint1 Force Stall Bit. RESET clears this bit
SOUT
OUT
4
4
RP0SIZ3
EP2E
3
3
Function
Function
RP0SIZ2
EP1E
2
2
RP0SIZ1
STALL2
1
1
RP0SIZ0
STALL1
0
0
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