tda8025hn NXP Semiconductors, tda8025hn Datasheet - Page 4

• Manufacturer Part Number: tda8025hn
• Description: Ic Card Interface
• Manufacturer: NXP Semiconductors

NXP Semiconductors
6. Block diagram
TDA8025_1
Product data sheet
Fig 1.
V
(1) Optional external resistor bridge. If this bridge is not needed, connect pin PORADJ to V
DD(INTF)
(1)
VCC_SEL1
VCC_SEL2
CMDVCCN
ENCLKIN
CLKDIV1
CLKDIV2
Block diagram
R1
R2
PRESN
RSTIN
PORADJ 25
PRES
OFFN
10
9
22
1
23
6
5
26
7
8
100 nF
INTERFACE
V
DD(INTF)
4
REFERENCE
GND
20
INTERNAL
V
VOLTAGE
SUPPLY
DD(INTREGD)
SENSE
XTAL2
(V
MULTIPLEXER
OSCILLATOR
XTAL
DD(INTREGD)
CIRCUIT
27
CLOCK
16
CONFIG
ALARMN
XTAL1
Rev. 01 — 6 April 2009
28
)
CLK
Level shifter
(V DD(INTF) )
PROTECTION
SEQUENCER
OSCILLATOR
I/OUC
REGULATOR
10 F
INTERNAL
THERMAL
V
DDI(REG)
29
21
CLKUP
AUX1UC
EN2
30
220 nF
EN1
EN4
EN3
PVCC
AUX2UC
31
TEST1
TRANSCEIVER
TRANSCEIVER
TRANSCEIVER
GENERATOR
GENERATOR
TDA8025
2
CLOCK
RESET
TEST2
LOOP
TEST
V
I/O
I/O
I/O
CC
3
TEST4
DD(INTF)
32
24
19
18
14
17
15
11
13
12
.
V
V
CGND
RST
CLK
I/O
AUX1
AUX2
DD(INTREGD)
CC
TEST3
TDA8025
© NXP B.V. 2009. All rights reserved.
IC card interface
C5
C6
C7
C8
470 nF
100 nF
C1
C2
C3
C4
10 F
220 nF
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