am79c930 Advanced Micro Devices, am79c930 Datasheet - Page 113
am79c930
Manufacturer Part Number
am79c930
Description
Pcnet-mobile Single-chip Wireless Lan Media Access Controller
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C930.pdf
(161 pages)
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5
4:0
TCR15: Pin Configuration C
This register is the Pin Configuration C register. This
register is used to set the state of the ACT, STSCHG,
CONFIGURATION REGISTER INDEX:
Bit
7
6
5
4
3
USEREN[4:0]
ANTSLTLEN
USER6EN
Reserved
TXCMEN
TXDLEN
RXCEN
Name
Reset Value
00h
–
0
0
0
0
0
P R E L I M I N A R Y
value that is present on the LLOCKE pin, regardless of the setting of
the PCMCIA pin.
The control of the function of the LLOCKE/SA15 pin is described in
the Multi-Function Pin section.
Reserved. Must be written as a 0. Reads of these bits produce
undefined data.
USER[4:0] Enable. These five bits are used to determine the direc-
tion of the USER[4:0] pins. When any bit of the USEREN register is
set to a 1, then the corresponding USER device pin is enabled to
drive both high and low output values. USER output values are de-
termined by the individual bit settings of the USERDT register
(TIR29). When any bit of the USEREN register is reset to a 0, then
the corresponding USER device pin is forced to a high-impedance
state. Reads of the USERDT register (TIR29) will yield the value
that is present on any particular USER pin.
The control of the function of each of the USER pins is described in
the Multi-Function Pin section.
0Fh
Description
ANTSLT Enable. ANTSLTLEN, the ANTSLTLFN bit of TCR30, the
ANTSEN bit of TIR26, and the PCMCIA pin are used to determine
the function of the ANTSLT/LA23 pin.
The control of the function of the ANTSLT/LA23 pin is described in
the Multi-Function Pin section.
TXDATA Enable. TXDLEN, the TXDLFN bit of TCR30, and the
PCMCIA pin are used to determine the direction of the TXDATA/
LA20 pin.
The control of the function of the TXDATA/LA20 pin is described in
the Multi-Function Pin section.
TXCMD Enable. TXCMEN, the TXCMFN bit of TCR30, the RCEN
bit of TIR11 and the PCMCIA pin are used to determine the direc-
tion of the TXCMD/LA21 pin.
The control of the function of the TXCMD/LA21 pin is described in
the Multi-Function Pin section.
RXC Enable. RXCEN is used with RXCFN (TCR28[7]), the ISA
PnP interrupt level select register, the ISA PnP interrupt type regis-
ter, and the PCMCIA pin to determine the function of the RXC/
IRQ10 pin.
The control of the function of the RXC/IRQ10 pin is described in the
Multi-Function Pin section.
USER6 Enable. USER6EN, the USER6FN bit of TCR15, the ISA
PnP interrupt level select register, the ISA PnP interrupt type regis-
ter, and the PCMCIA pin are used to determine the function of the
USER6IRQ5 pin.
The control of the function of the USER6/IRQ5 pin is described in
the Multi-Function Pin section.
Am79C930
USER5, USER6, RXC, TXCMD, TXDATA, and ANTSLT
pins as outputs or as high impedance inputs.
AMD
113
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