msm7712 Oki Semiconductor, msm7712 Datasheet - Page 8

• Manufacturer Part Number: msm7712
• Description: Wireless Lan Baseband Controller
• Manufacturer: Oki Semiconductor

E
E
PCMCIA CIS table) and wireless LAN parameters (e.g. local IEEE address, radio parameters). The design
supports a 64, 128 or 256 byte E
The local processor can access the E
ize the E
Following a reset by the host processor, the 64 or 128 bytes of E
shared RAM to provide the configuration information for the host interface.
E
Host Interface (Between Adapter Card and Computer or Laptop)
The 16-bit PCMCIA interface is fully supported by the MSM7712 with no additional logic. Access to
attribute memory (the CIS configuration data) and I/O memory (host registers) are provided.
In normal operation, access to the baseband controller registers and shared buffer memory is via a small
number of I/O addresses. This requires minimum support in memory and input/output from the host
computer.
The signals are defined in the PCMCIA standard. Note that the PCMCIA bus timing is independent of
the system clock timing.
PCMCIA Interface
8
EEDIO
EECS
EESK
H_CONF
HA[8:0]
HD[15:0]
HWEN
HOEN
HIORDN
2
MSM7712GS-K
2
2
MSM7712
PROM support is provided to allow for non-volatile storage of the host interface configuration (e.g.
PROM Interface Signal Descriptions
PROM Interface
Pin Name
2
PROM and provide card parameter storage.
Oki Semiconductor
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Bidirectional
Output
Output
Input
Bidirectional
Input
Input
Input
Direction
Pin Type
This is a bidirectional data signal for the E
a resistor (see E
This signal is connected to CS of the E
This signal is connected to SK of the E
kHz with RCK at 16 MHz).
Figure 3. E
MSM7712
2
PROM (e.g. 93C46,93C56, or 93C66 types).
0
A[8:0]
D[15:0]
WEN
OEN
IORDN
2
PROM for reads, writes and control functions. This is used to initial-
EECS
SYNCLK/EESK
SYNDAT/EEDIO
2
PROM application notes and Figure 3 ).
2
PROM Connections to MSM7712GS-K
PCMCIA
DO
2
2
CS
SK
DI
PROM to provide the chip select.
PROM to provide the clock. The clock rate is RCK divided by 64 (250
2
PROM. It is connected directly to DI of the E
93c46
93c58
94s66
Description
2
PROM contents are automatically read to
V
V
V
2
PROM, and to DO via