W90P710_05 Datasheet, PDF (436/526 Pages) Winbond – 16/32-bit ARM microcontroller

W90P710
BITS
[31:6]
[5]
[4]
[3:1]
[0]
RESERVED
SCPSNT
SCPTI
INTS2 ~
INTS0
Interrupt
pending
DESCRIPTIONS
-
Smart card present line status.
User may poll this bit to see SCPSNT pin's voltage level
0 = Smart card has been remove from the reader
1 = Smart card IC is contact with the reader
SCPSNT toggle interrupt status.
A rising/falling edge of SCPSNT signal triggers an interrupt and set this
status bit if ESCPTI (IER bit 3) is set to "1" to enable SCPSNT toggle
interrupt.
0= No SCPSNT toggle interrupt.
1 = SCPSNT toggle interrupt occurs.
Interrupt Status bit 2 ~0
The combination indicates which kind of transmission-related interrupt has
occurred. Refer to the following table for details.
ISR bit
Interrupt set and function
3210
Priority Interrupt Interrupt source
type
Clear interru
0001 -
-
No interrupt pending -
1010
first
Card
SCPTI =1
insert or
remove
Read ISR
1110
second TIME- 1. TO2 =1
OUT
2. TO1 =1
interrupt _{3. TO0 =1}
Read SCSR
0110
third Data
1. OER = 1
receiving 2. PBER = 1
status _{3. NSER = 1}
Read SCSR
4. SBD = 1
0100
fourth
RBR data 1. RBR data ready
1. Read RB
ready 2. FIFO interrupt active 2. Read RB
level reached
under ac
1100
fifth
FIFO data Receiver FIFO is non- Read RBR
time out empty and no activities
are occurred in the
receiver FIFO during the
TOR defined time
duration
0010
sixth
TBR
empty
TBR empty
1. Write dat
2. Read ISR
sixth)
Interrupt pending status bit.
This bit is a logical "1" if there is no interrupt pending. If one of the interrupt
sources occurs, this bit will be set to a logical "0".
0 = Interrupt pending.
1 = No interrupt occurs.
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