CS22220 Datasheet, PDF (11/34 Pages) Cirrus Logic – WIRELESS PCI/USB CONTROLLER

SMA7
SMA8
SMA9
SMA10
SMA11
SMD[7:0]
SMD[15:8]
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).
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).
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).
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).
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).
Bi-directional
Data bus. The data bus contains the data to be written to memory on a
write cycle and the read return data on a read cycle.
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.
CS22220 Wireless PCMCIA Controller
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DS557PP2 Rev. 3.0