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TUSB5052B Datasheet(PDF) 63 Page - Texas Instruments

Part # TUSB5052B
Description  USB to 2-Serial 1-Parallel Controller With Configurable Optional Hub
PDF  84 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TUSB5052B Datasheet(HTML) 63 Page - Texas Instruments

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8–3
8.1.3
PPIMSK: P-Port Interrupt Mask Register
This register is used to mask the parallel-port interrupt sources.
RSV
ACKE
PERE
RSV
FLINE
RSV
ETxE
ERxF
7
6
5
4
32
10
R/O
R/W
R/W
R/O
R/W
R/O
R/W
R/W
BIT
NAME
RESET
FUNCTION
0
ERxF
0
This bit disables/enables the RxF interrupt.
ERxF = 0
RxF does not generate an interrupt.
ERxF = 1
When RxF is set to 1, an interrupt is generated.
1
ETxE
0
This bit is used to enable/disable the TxE interrupt.
ETxE = 0
TxE does not generate an interrupt.
ETxE = 1
When TxE is set to 1, an interrupt is generated.
2
RSV
0
Reserved =0
3
FLINE
0
This bit is used to enable/disable the FALT interrupt.
FLINE = 0 FALT does not generate an interrupt.
FLINE = 1 When FALT is set to 1, an interrupt is generated.
4
RSV
0
Reserved =0
5
PERE
0
PERE = 0 PER does not generate an interrupt.
PERE = 1 When PER is set to 1, an interrupt is generated.
6
ACKE
0
ACKE = 0 ACK does not generate an interrupt.
ACKE = 1 When ACK is set to 1, an interrupt is generated.
7
RSV
0
Reserved =0
8.1.4
PPSTA: P-Port Status Register
This register is used to monitor status conditions for all modes.
BUSY
ACK
PER
SLCT
FALT
RSV
TxE
RxF
7
6
5
4
32
10
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
BIT
NAME
RESET
FUNCTION
0
RxF
0
Receiver full indication. This bit is used only when the MCU is performing the data transfer and is valid only when
DIR = 1. This bit indicates the condition of the PPDAT register in the input direction.
RxF =0
PPDAT has no data
RxF =1
PPDAT contains a byte. This bit is cleared when the MCU reads the byte from the PPDAT register.
1
TxF
1
Transmitter empty indication. This bit is used only when the MCU is performing the data transfer and is valid only
when DIR = 0. This bit indicates the condition of the PPDAT register in the output direction.
TxE =0
PPDAT contain a byte and the MCU cannot write to it. This bit is cleared when the byte is accepted by
the peripheral.
TxE =1
PPDAT is empty and the MCU can write data to it.
2
RSV
0
Reserved =0
3
FALT
X
Corresponds to inverse of FALT input signal
4
SLCT
X
Corresponds to SLCT input signal
5
PER
X
Corresponds to PER input signal
6
ACK
X
Corresponds to the inverse of ACK input signal
7
BUSY
X
Corresponds to BUSY input signal



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