 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
HT82A832R Datasheet(PDF) 11 Page - Holtek Semiconductor Inc |
|
||||||||||||||||||||||||||||||
HT82A832R Datasheet(HTML) 11 Page - Holtek Semiconductor Inc |
|
|
11 / 51 page  HT82A832R Rev. 1.10 11 June 15, 2007 related interrupt request flag (T1F) will be reset and the EMI bit cleared to disable further interrupts. The play interrupt is initialized by setting the play interrupt request flag (bit 4 of INTC1), caused by a play data valid. When the interrupt is enabled, the stack is not full and the PLAYF is set, a subroutine call to location 10H will occur. The related interrupt request flag (PLAYF) will be reset and the EMI bit cleared to disable further interrupts. If PLAY_MODE (bit 3 of MODE_CTRL register) is set to ²1², the play interrupt frequency will change to 8KHz, otherwise the interrupt frequency is 48kHz. The serial interface interrupt is indicated by the interrupt flag (SIF; bit 5 of INTC1), that is generated by the reception or transfer of a complete 8-bits of data between the HT82A832R and the external device. The serial interface interrupt is controlled by setting the Serial interface interrupt control bit (ESII; bit 1 of INTC1). After the interrupt is enabled (by setting SBEN; bit 4 of SBCR), and the stack is not full and the SIF is set, a subroutine call to location 14H occurs. The record interrupt is initialized by setting the record interrupt request flag (bit 6 of INTC1), caused by a record data valid. When the interrupt is enabled, the stack is not full and RECF is set, a subroutine call to location 18H will occur. The related interrupt request flag (RECF) will be reset and the EMI bit cleared to disable further interrupts. If ADC powered down (AD_ENB =1) or USB clock disabled (USBCKEN=0), the record interrupt will be disabled. During the execution of an interrupt subroutine, other interrupt acknowledge signals are held until the ²RETI² instruction is executed or the EMI bit and the related interrupt control bit are set to 1 (if the stack is not full). To return from the interrupt subroutine, ²RET² or ²RETI² may be invoked. RETI will set the EMI bit to enable an interrupt service, but RET will not. Interrupts, occurring in the interval between the rising edges of two consecutive T2 pulses, will be serviced on the latter of the two T2 pulses, if the corresponding interrupts are enabled. In the case of simultaneous requests the following table shows the priority that is applied. These can be masked by resetting the EMI bit. Interrupt Source Priority Vector USB interrupt 1 04H Timer/Event Counter 0 overflow 2 08H Timer/Event Counter 1 overflow 3 0CH Play Interrupt 4 10H Serial Interface Interrupt 5 14H Record Interrupt 6 18H It is recommended that a program does not use the ²CALL subroutine² within the interrupt subroutine. Interrupts often occur in an unpredictable manner or need to be serviced immediately in some applications. If only one stack is left and enabling the interrupt is not well controlled, the original control sequence will be damaged once the ²CALL² operates in the interrupt subroutine. Bit No. Label Function 0 EMI Controls the master (global) interrupt (1=enable; 0=disable) 1 EUI Controls the USB interrupt (1=enable; 0=disable) 2 ET0I Controls the Timer/Event Counter 0 interrupt (1=enable; 0=disable) 3 ET1I Controls the Timer/Event Counter 1 interrupt (1=enable; 0=disable) 4 USBF USB interrupt request flag (1=active; 0=inactive) 5 T0F Internal Timer/Event Counter 0 request flag (1=active; 0=inactive) 6 T1F Internal Timer/Event Counter 1 request flag (1=active; 0=inactive) 7 ¾ Unused bit, read as ²0² INTC0 (0BH) Register Bit No. Label Function 0 EPLAYI Play interrupt (1=enable; 0=disable) 1 ESII Control Serial interface interrupt (1=enable; 0=disable) 2 RECI Record interrupt (1=enable; 0=disable) 3, 7 ¾ Unused bit, read as ²0² 4 PLAYF Play interrupt request flag (1=active; 0=inactive) 5 SIF Serial interface interrupt request flag (1=active; 0=inactive) 6 RECF Record interrupt request flag (1=active; 0=inactive) INTC1 (1EH) Register |
Similar Part No. - HT82A832R |
|
Similar Description - HT82A832R |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
