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| 型号： | 935260795518 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | PLASTIC, QFP-44 |
| 文件页数： | 6/43页 |
| 文件大小： | 206K |
| 代理商： | 935260795518 |
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2000 Feb 21
14
Philips Semiconductors
Product specication
Multiprotocol IC Card coupler
TDA8006
Table 4
Register addresses
X = don’t care.
AD3
AD2
AD1
AD0
R/W
REGISTER
PERIPHERAL
00000
CCR (Clock Conguration Register)
clock generator
00010
PDR (Programmable Divider Register)
00110
SOR (Synchronous Output Register)
ISO 7816 UART
00111
SIR (Synchronous Input Register)
01000
UTR (UART Transmit Register)
01001
URR (UART Receive Register)
01011
USR (UART Status Register)
01010
UCR (UART Conguration Register)
01100
GTR (Guard Time Register)
01110
PER (Ports Extension Register)
on/off sequencer
1
0
X
0
MAR0 (Memory Address LOW)
auxiliary RAM
1
X
0
MAR1 (Memory Address HIGH)
1
0
X
0
MWR (Memory Write Register)
1
0
X
1
MRR (Memory Read Register)
Clock circuit
The microcontroller clock (OSC), the card clock (CLK), the
ISO 7816 UART clock, and the clock to the external world
(CLKOUT), are derived from the main clock signals (XTAL
from 4 to 20 MHz, or an external clock signal applied to
XTAL1), or the internal oscillator (fINT).
Microcontroller clock (OSC): after power-on or reset, the
microcontroller is clocked at 1
8fINT. Then, the application
may decide to clock it at 1
2fINT, 12fxtal or fxtal.
All frequency changes are synchronous, thereby
ensuring no hang-up due to short spikes etc.
Card clock (CLK): the application may send a clock
frequency of 1
2fxtal, 14fxtal, 18fxtal or 12fINT (≈1.25 MHz),
or may stop the clock at HIGH or LOW. All transitions
are synchronous, ensuring correct pulse length during
start or change, in accordance with ISO 7816. After
power-on or reset, CLK is held LOW.
External clock output (CLKOUT): CLKOUT is a
permanent clock output for external use. The following
frequencies are possible: fxtal, 12fxtal and 14fxtal.
All transitions are synchronous. After power-on or reset,
CLKOUT is fixed at 1
4fxtal.
ISO 7816 UART clock: the clock to the ISO 7816 UART
is identical to the clock to the card (CLK).
To achieve the different I/O baud rates as defined by
values F and D (see Table 7), the clock signal is counted
by an auto-reload 8-bit programmable counter and then
divided by a 31 or 32 prescaler.
All these configurations are controlled by the clock
configuration register and by the programmable divider
register.
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