lan83c175 Standard Microsystems Corp., lan83c175 Datasheet - Page 43
lan83c175
Manufacturer Part Number
lan83c175
Description
Ethernet Cardbus Integrated Controller With Modem Support Corporation
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN83C175.pdf
(92 pages)
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14 - EEPROM CONTROL
Reset Value: xxx0000
6 - EEPROM SIZE:
indicates the size of the external serial
EEPROM (1 = 16x16 or 64x16, 0 = 128x16 or
256x16). The size is selected by an external
“jumper” at power-on reset.
5 - EERDY: This read only bit indicates when
the EEPROM input data is valid and/or when
any of the EEPROM outputs may be changed
(1 = ready, 0 = not ready).
4 - EEDO:
Used to read back data from serial EEPROM.
This bit is wired directly to the MD[31] input.
3 - EEDI: Data input to EEPROM - Used to
supply address and data to serial EEPROM.
This bit is muxed onto MA[13] when EEPROM
ENABLE is set.
2 - EESK: EEPROM clock - Used to supply
the clock to the serial EEPROM. The value of
this bit is muxed onto MA[14] when EEPROM
ENABLE is set.
1 - EECS: EEPROM chip select - This bit is
wired directly to the EECS output pin on the
EPIC/C.
0 - EEPROM ENABLE: When this bit is set,
EESK and EEDI are multiplexed onto the MA
pins.
18 - PBLCNT
Reset Value: 000000
DATA output from EEPROM -
This read only bit
43
5 through 0 - PBLCNT: The value in this register
reflects the maximum number of dwords allowed
to be transferred in a read or write burst. A value
of zero (the reset value) means that the CardBus
burst length is only limited by the amount of
space available in the transmit fifo or the amount
of data in the receive fifo.
20 - CRC ERROR COUNTER
Reset Value: 00000000
31 through 8: Unused.
7 through 0: Reports the number of CRC errors
since the last time this register was read. The
count will stick at 255. When the count reaches
192, the counter overflow interrupt will be set.
The count is cleared when read.
24 - FRAME ALIGNMENT ERROR COUNTER
Reset Value: 00000000
31 through 8: Unused.
7 through 0:
alignment errors since the last time this register
was read. The count will stick at 255. When the
count reaches 192, the counter overflow interrupt
will be set. The count is cleared when read.
28 - MISSED PACKET COUNTER
Reset Value: 00000000
31 through 8: Unused.
7 through 0:
packet errors since the last time this register was
read. The count will stick at 255. When the count
reaches 192, the counter overflow interrupt will be
set. The count is cleared when read.
Reports the number of missed
Reports the number of frame
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