TDA8029 Datasheet, PDF (29/59 Pages) NXP Semiconductors – Low power single card reader

Philips Semiconductors
TDA8029
Low power single card reader
Table 38: HSR - hardware status register (address Fh) bit description
Bit
Symbol
Description
7
SDWN
Enter Shut-down mode. This bit is used for entering the Shut-down mode. SDWN is set
when the SDWN_N pin is active (LOW). When the software reads the status, it must:
• Deactivate the card if active
• Set all ports to logic 1 (for minimizing the current consumption)
• Inhibit the interrupts
• Go to Power-down mode.
The same must be done when the chip is powered-on with SDWN_N pin active.
The only way to leave Shut-down mode is when pin SDWN_N is HIGH.
6
-
Not used.
5
PRTL1
4
SUPL
Protection 1. PRTL1 = 1 when a fault has been detected on the card reader. PRTL1 is
the OR of the protection on V_CC and on RST.
Supervisor Latch. SUPL = 1 when the supervisor has been active. At power-on, or after a
supply voltage dropout, then SUPL is set and INT0_N is LOW. INT0_N will return to
HIGH at the end of the internal Power-on reset pulse defined by CDEL, except if
pin SDWN_N was active during power-on. SUPL will be reset only after a status register
read-out outside the Power-on reset pulse; see Figure 11. When leaving Shut-down
mode, the same situation occurs.
3
-
Not used.
2
PRL1
Presence Latch. PRL1 = 1 when bit PR1 in the mixed status register has changed state.
1
-
Not used.
0
PTL
Overheat. PTL = 1 if an overheating has occurred.
8.10.1.3 Time-out registers (TOR1, TOR2 and TOR3)
Table 39: TOR1 - time-out register 1 (address 9h) bit allocation
Bit
7
6
5
4
3
Symbol
TOL7
TOL6
TOL5
TOL4
TOL3
Reset
0
0
0
0
0
Access
write
2
TOL2
0
1
TOL1
0
0
TOL0
0
Table 40: TOR1 - time-out register 1 (address 9h) bit description
Bit
Symbol
Description
7 to 0
TOL[7:0]
The 8-bit value for the auto-reload counter or the lower 8-bits of the 24-bits counter.
Table 41: TOR2 - time-out register 2 (address Ah) bit allocation
Bit
7
6
5
4
3
Symbol
TOL15
TOL14
TOL13
TOL12
TOL11
Reset
0
0
0
0
0
Access
write
2
TOL10
0
1
TOL9
0
0
TOL8
0
Table 42: TOR2 - time-out register 2 (address Ah) bit description
Bit
Symbol
Description
7 to 0
TOL[15:8]
The lower 8-bits of the 16-bits counter or the middle 8-bits of the 24-bits counter.
9397 750 14145
Product data sheet
Rev. 03 — 22 February 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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