IBM EM78M611E manual Pattern Detect Application PDA, Function Description

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EM78M611E

Universal Serial Bus Series Microcontroller

b)Signal from P.92 changes to high, and Pattern Counter value bigger than R10 register value.

c)P.92 remains high, and the Pattern Counter value is equal to 0XFF.

d)P.92 remains low, and the Pattern Counter value is equal to 0XFF.

SE2 Pattern Counter Interrupt Conditions: If the Pattern Detection Application function is enabled, there will be three conditions with which interrupt is generated and the status flag RF[6] is set to 1(interrupt vector is 0X0001).

a)Signal from P.93 changes to low and the Pattern Counter value is bigger than R13 register value.

b)Signal from P.93 changes to high and the Pattern Counter value is bigger than R12 register value.

c)P.93 remains high, and the Pattern Counter value is equal to 0XFF.

d)P.93 remains low, and the Pattern Counter value is equal to 0XFF.

EP0 interrupt: When the UDC successfully accepts a setup transaction from host to EndPoint0, the status flag RF[1] is set to 1. Its interrupt vector is 0X0001.

USB suspend: When UDC detects a USB Suspend signal on the USB bus, the status flag RF[2] is set to 1. Its interrupt vector is 0X0001.

USB Reset: When the UDC detects a USB Reset signal on the USB bus, the status flag R[3] is set to 1. Its interrupt vector is 0X0001.

USB Host Resume: When the UDC detects that the USB bus is no longer in Suspend condition and without Device Resume signal, the status flag R[7] is set to 1. Its interrupt vector is 0X0001.

IOCF is an interrupt mask register which can be set bit by bit. While their respective bit is written to 0, the hardware interrupt will inhibit, that is, the EM78M611E will not jump to the interrupt vector to execute instructions. But the interrupt status flags still records the conditions no matter whether the interrupt is masked or not. The interrupt status flags must be cleared by firmware before leaving the interrupt service routine and enabling other interrupt.

The global interrupt is enabled by the ENI (RETI) instruction and is disabled by the DISI instruction.

8.9 Pattern Detect Application (PDA)

8.9.1 Function Description

This function is designed for the serial signal transmission, e.g., the transmission between a wireless device and its receiver box. The EM78M611 has two sets of built-in Pattern Detect Application block that ensures the EM78M611 is equipped with a compound device, such as the receiver box controller for a wireless keyboard paired with a wireless mouse.

Product Specification (V1.11) 04.20.2007

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(This specification is subject to change without further notice)

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Contents EM78M611E Trademark Acknowledgments 2.1 Appendix Product Specification V1.1Universal Serial Bus Series Microcontroller FeaturesGeneral Description Product Specification V1.1 Original With Both Type DefinitionApplication VNN Pin AssignmentEM78M611EXBP/BM/DM 20-Pin DIP/SOP/SSOP Pin Description Symbol FunctionALU ACC Data & Control BUS Block DiagramProgram Memory Function DescriptionSpecial Purpose Register Data MemoryOperation Registers 2.2 R1 Timer / Clock Counter Default Value 0B000000002.3 R2 Program Counter & Stack Default Value 0B00000000 Bit 2.4 R3 Status Register Default Value0B00011XXXR3 0 Carry/Borrow Flag Program Memory Page Address Condition2.5 R4 RAM Select Register Default Value 0B00XXXXXX EP0Busy Stall RF Interrupt Status Register Default Value 0B00000000Accumulator Control RegistersTCC Rate WDT Rate Control Register Default Value 0B00111111PS/2 Operation ModePH95 PH93 DualFrq.1 DualFrq.0 FrequencyBit P96 P95 P94 P93 P92 P91 P90 PU8 PU6 PU5 USB Application FIFOs Extra Control RegisterUSB Device Controller USB ApplicationSaving Power Mode ResetInterrupt Dual Clock ModeFunction Description Pattern Detect Application PDASampling Rate and Debounce Length Control RegisterSR.2 SR.1 SR.0 Sampling Rate DB.2 DB.1 DB.0 Debounce TimePulse Width Modulation PWM Erepwm Control Register Default Value 0B00000001Duty Cycle R10 PWM1 Duty Cycle RegisterClock Hz Period/255 s ERA AD Channel Select Register Default Value 0B00011111Analog-To-Digital Converter ADC Channel Port ERB AD LSB Data Register Default Value 0B00000000Command Value Action Execution Time ERC AD MSB Data Register Default Value 0B00000000ERD AD Control Register Default Value 0B00000000 Symbol Min Max Unit DC Electrical CharacteristicSymbol Parameter Condition Min Type Max Unit Absolute Maximum RatingsUSB Interface Application Circuit Operation Registers Address Name Bit Bit1 Default ValueSpecial Register Map Extra Register IOCA3 = Address Name Bit Default ValueBinary Instruction Hex Mnemonic Operation Status Affected Instruction SetThis instruction is not recommended for RE, RF operation 11 16ms Bits 4~12 User ID Address Code Option RegisterAddress EM78M611E
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