EM78M611E
Universal Serial Bus Series Microcontroller
8.2.2.12RD (USB Application FIFO Address Register) Default Value: (0B_0000_0000)
Bit | 7 |
| Bit | 6 |
| Bit | 5 |
| Bit 4 |
| Bit 3 |
| Bit 2 |
| Bit 1 |
| Bit 0 |
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0 |
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| 0 |
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| 0 |
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| UAD4 |
| UAD3 |
| UAD2 |
| UAD1 |
| UAD0 |
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RD [0~4] USB Application FIFO address registers. These five bits are the address pointers of USB Application FIFO.
RD [5~7] Undefined registers. The default value is zero.
8.2.2.13RE (USB Application FIFO Data Register) Default Value: (0B_0000_0000)
Bit 7 | Bit 6 |
| Bit 5 |
| Bit 4 |
| Bit 3 |
| Bit 2 |
| Bit 1 | Bit 0 |
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UD7 | UD6 |
| UD5 |
| UD4 |
| UD3 |
| UD2 |
| UD1 | UD0 |
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RE (USB Application FIFO data register) contains the data in the register of which address is pointed by RD.
NOTE
For example, if user wants to read the fourth byte of EndPoint Zero, user has to use the address of EP0 (0x00) and Data Byte Pointer of EP0 (0x10) to access it.
//Read the 4th byte of the EP0 FIFO
//First, assign the data byte pointer of EP0 register (0X10) with 0X03. MOV A, @0X10
MOVRD, a // Move data in A to RD register MOV A, @0X03
MOVRE , A // Move data in A to RE register
//Then read the content from EP0 FIFO (0x00) 4th byte
MOV A, @0X00
MOVRD, A // Assign address point to EP0 FIFO
MOVA, RE // Read the fourth byte data (Byte 3) of the EP0 FIFO
MOV A, 0X0E// Read the fifth byte data (Byte 4) of the EP0 FIFO
8.2.2.14 RF (Interrupt Status Register) | Default Value: (0B_0000_0000) |
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Bit 7 | Bit 6 |
| Bit 5 |
| Bit 4 |
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| Bit 3 |
| Bit 2 |
| Bit 1 |
| Bit 0 |
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USB Host | SE2_IF |
| SE1_IF |
| Port7 state |
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| USB |
| USB |
| EP0_IF |
| TCC_IF |
Resume_IF |
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| change_1F |
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| Reset_IF |
| Suspend_IF |
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RF [0] TCC Overflow interrupt flag. It will be set while TCC overflows, and is cleared by firmware.
RF [1] EndPoint Zero interrupt flag. It will be set when the EM78M611E receives Vendor/Customer Command to EndPoint Zero. This bit is cleared by firmware.
Product Specification (V1.11) 04.20.2007 | • 15 |
(This specification is subject to change without further notice)
