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PM8313 bảng dữ liệu(PDF) 102 Page - PMC-Sierra, Inc |
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PM8313 bảng dữ liệu(HTML) 102 Page - PMC-Sierra, Inc |
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102 / 192 page ![]() PM8313 D3MX DATA SHEET PMC-920702 ISSUE 5 M13 MULTIPLEXER 92 Register 27H: RFDL TSB Receive Data Bit Type Function Default Bit 7 R RD7 X Bit 6 R RD6 X Bit 5 R RD5 X Bit 4 R RD4 X Bit 3 R RD3 X Bit 2 R RD2 X Bit 1 R RD1 X Bit 0 R RD0 X RD0 RD0 corresponds to the first bit of the serial byte received by the RFDL. This register is actually a 4 level FIFO. If data is available, the FE bit in the Status register is low. If INTC[1:0] (in the Enable/Status register) is set to 01, the Receive Data register must be read within 31 data bit periods to prevent an overrun. If INTC[1:0] is set to 11 the Receiver Data register must be read within 15 data bit periods. When an overrun is detected, an interrupt is generated and the FIFO is held cleared until the Status register is read. When the LAPD abort sequence (01111111) is detected in the data an ABORT interrupt is generated and the data that has been shifted into the serial to parallel converter is written into the FIFO. A read of the Receive Data register increments the FIFO pointer at the end of the read. If the Receive Data register read causes an FIFO underrun, then the pointer is inhibited from incrementing. The underrun condition will be signaled in the next Status read by returning all zeros. |
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