CS22220 Datasheet, PDF (10/34 Pages) Cirrus Logic – WIRELESS PCI/USB CONTROLLER

SMDQM[1:0]
SMCKE
SMA0
SMA1
SMA2
SMA3
SMA4
SMA5
SMA6
Output
Data mask bit 1:0. These signals function as byte enable lines masking
unwanted bytes on memory writes. Also, used as testmode(1:0) when
NTEST pin is '0'.
Output
Clock enable. SMCKE is used to enable and disable clocking of internal
RAM logic.
Output
Address bit0. The address bus specifies either the row address or
column address. Also, this is shared as boot-ROM address bit0. Also
used during reset to latch in the strap value for pccsel, if set to a '1'
implies pccard mode
Output
Address bit1. Also, this is shared as boot-ROM address bit1. This pin
should be pull-down.
Output
Address bit2. Also, this is shared as boot-ROM address bit2. This pin
should be pull-down.
Output
Address bit3. Also shared as boot-ROM address bit3. This pin should be
pull-down.
Output
Address bit4. Also shared as boot-ROM address bit4. Also used during
reset to latch in the strap value for romcfg; if set to a '1' implies pccard
configuration data should be downloaded from ROM.
Output
Address bit5. Also shared as boot-ROM address bit5. Also used during
reset to latch in the strap value for test_rst_enb; if set to a '0' implies
normal operation mode.
Output
Address bit6. Also shared as boot-ROM address bit6. Also used during
reset to latch in the strap value for freq_sel(0). Freq_sel(2:0) is used to
select the multiplication factor for the internal PLL (000=1x, and 111=8x).
CS22220 Wireless PCMCIA Controller
10 of 34
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DS557PP2 Rev. 3.0