Datenblatt-Suchmaschine für elektronische Bauteile |
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CS22220 Datenblatt(PDF) 11 Page - Cirrus Logic |
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CS22220 Datenblatt(HTML) 11 Page - Cirrus Logic |
11 / 34 page CS22220 Wireless PCMCIA Controller 11 of 34 DS557PP2 Rev. 3.0 www.cirrus.com SMA7 Output Address bit7. Also shared as boot-ROM address bit7. Also used during reset to latch in the strap value for freq_sel(1). Freq_sel(2:0) is used to select the multiplication factor for the internal PLL (000=1x, and 111=8x). SMA8 Output Address bit8. Also shared as boot-ROM address bit8. Also used during reset to latch in the strap value for freq_sel(2). Freq_sel(2:0) is used to select the multiplication factor for the internal PLL (000=1x, and 111=8x). SMA9 Output Address bit9. Also shared as boot-ROM address bit9. Also used during reset to latch in the strap value for sdram_delay(0). Sdram_delay(2:0) is used to select the delay factor for the internal memory clock (000=0ns, and 111=1.75ns with each .25ns increments). SMA10 Output Address bit10. Also shared as boot-ROM address bit10. Also used during reset to latch in the strap value for sdram_delay(1). Sdram_delay(2:0) is used to select the delay factor for the internal memory clock (000=0ns, and 111=1.75ns with each .25ns increments). SMA11 Output Address bit11. Also shared as boot-ROM address bit11. Also used during reset to latch in the strap value for sdram_delay(2). Sdram_delay(2:0) is used to select the delay factor for the internal memory clock (000=0ns, and 111=1.75ns with each .25ns increments). SMD[7:0] Bi-directional Data bus. The data bus contains the data to be written to memory on a writecycle andthe read return dataonareadcycle. SMD[15:8] Bi-directional Shared data bus. The data bus contains the data to be written to RAM memory on a write cycle and the read return data on a read cycle. Data bit [15:8] is also shared as boot ROM address bit [19:12]. Digital Radio Interface All radio input buffers are Schmitt triggered input buffers. There are total of 26 signals in this interface. TXCLK Input Transmit clock is a clock input from the radio baseband processor. This signal is used to clock out the transmit data on the rising edge of TXCLK. |
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Ähnliche Beschreibung - CS22220 |
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