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TDA8007BHL Datasheet(PDF) 9 Page - NXP Semiconductors |
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TDA8007BHL Datasheet(HTML) 9 Page - NXP Semiconductors |
9 / 36 page 2000 Nov 09 9 Philips Semiconductors Product specification Double multiprotocol IC card interface TDA8007B Control registers The TDA8007B has 2 complete analog interfaces which can drive card 1 and card 2. The data to and from these 2 cards share the same ISO UART. The data to and from a third card (card 3), externally interfaced (with a TDA8002 or TDA8003 for example), may also share the same ISO UART. Cards 1, 2 and 3 have dedicated registers for setting the parameters of the ISO UART; Programmable Divider Register (PDR), Guard Time Register (GTR), UART Configuration Register 1 (UCR1), UART Configuration Register 2 (UCR2) and Clock Configuration Register (CCR). Cards 1 and 2 also have dedicated registers for controlling their power and clock configuration. The Power Control Register (PCR) for card 3, is controlled externally. The PCR is also used for writing or reading on the auxiliary card contacts C4 and C8. Card 1, 2 or 3 can be selected via the Card Select Register (CSR). When one card is selected, the corresponding parameters are used by the ISO UART. The CSR also contains one bit for resetting the ISO UART (active LOW). This bit is reset after Power-on, and must be set to HIGH before starting with any one of the cards. It may be reset by software when necessary. When the specific parameters of the cards have been programmed, the UART may be used with the following registers: UART Receive Register (URR), UART Transmit Register (UTR), UART Status Register (USR) and Mixed Status Register (MSR). In reception mode, a FIFO of 1 to 8 characters may be used, and is configured with the FIFO Control Register (FCR). The Hardware Status Register (HSR) gives the status of the supply voltage, of the hardware protections and of the card movements. HSR and USR give interrupts on pin INT when some of their bits have been changed. The MSR does not give interrupts and may be used in the polling mode for some operations; for this use, some of the interrupt sources within the USR and HSR may be masked. A 24-bit time-out counter may be started to give an interrupt after a number of ETUs programmed into registers TOR1, TOR2 and TOR3. This will help the microcontroller in processing different real-time tasks (ATR, WWT, BWT, etc.) mainly if the microcontrollers and cards clock are asynchronous. This counter is configured with a register Time-Out counter Configuration (TOC). It may be used as a 24-bit or as a 16 + 8 bits. Each counter can be set to start counting once data has been written, or on detection of a start bit on the I/O, or as auto-reload. |
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