TDA8025 Datasheet, PDF (4/38 Pages) NXP Semiconductors – IC card interface

NXP Semiconductors
6. Block diagram
TDA8025
IC card interface
V_DD(INTF)
R1
PORADJ 25
(1)
GND
20
CONFIG
16
V_DDI(REG)
10 µF
21
REGULATOR
SUPPLY
INTERNAL
REFERENCE
INTERNAL
OSCILLATOR
TEST2
TEST1
TEST4
23
TEST
32
24
TEST3
19 V_DD(INTREGD) ^{100 nF}
10 µF
TDA8025
R2
PRES
PRESN
RSTIN
CMDVCCN
OFFN
CLKDIV1
CLKDIV2
ENCLKIN
VCC_SEL1
VCC_SEL2
VOLTAGE
SENSE
ALARMN
CLKUP
EN1
10
PVCC
V_CC
LOOP
9
22
SEQUENCER EN4
1
23
CLOCK
CIRCUIT
6
V_DD(INTREGD)
5 ^INTERFACE
CLK
EN3
EN2
26
MULTIPLEXER
THERMAL
PROTECTION
7
Level shifter
8
XTAL
(VDD(INTF))
OSCILLATOR
(V_DD(INTREGD))
220 nF
RESET
GENERATOR
CLOCK
GENERATOR
I/O
TRANSCEIVER
I/O
TRANSCEIVER
I/O
TRANSCEIVER
4
100 nF
V_DD(INTF)
27
28
29
30
31
XTAL1
AUX1UC
XTAL2
I/OUC
AUX2UC
18 V_CC
14 _CGND
17 _RST
15 _CLK
11 _I/O
13 _AUX1
12 _AUX2
470 nF
220 nF
C5 C1
C6 C2
C7 C3
C8 C4
001aai957
(1) Optional external resistor bridge. If this bridge is not needed, connect pin PORADJ to V_DD(INTF).
Fig 1. Block diagram
TDA8025_1
Product data sheet
Rev. 01 — 6 April 2009
© NXP B.V. 2009. All rights reserved.
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