DP83848M_07 Datasheet, PDF (51/78 Pages) National Semiconductor (TI) – Commercial Temperature Single 10/100 Ethernet Transceiver

7.2.4 100 Mb/s PCS Configuration and Status Register (PCSR)
Bit
15:13
12
11
10
9
8
7
6
5
4
3
2
1
0
Table 24. 100 Mb/s PCS Configuration and Status Register (PCSR), address 0x16
Bit Name
Default
Description
RESERVED
<00>, RO RESERVED: Writes ignored, Read as 0.
RESERVED
0
RESERVED:
Must be zero.
RESERVED
0
RESERVED:
Must be zero.
TQ_EN
0, RW
100Mbs True Quiet Mode Enable:
1 = Transmit True Quiet Mode.
0 = Normal Transmit Mode.
SD FORCE PMA
0, RW
Signal Detect Force PMA:
1 = Forces Signal Detection in PMA.
0 = Normal SD operation.
SD_OPTION
1, RW
Signal Detect Option:
1 = Enhanced signal detect algorithm.
0 = Reduced signal detect algorithm.
DESC_TIME
0, RW
Descrambler Timeout:
Increase the descrambler timeout. When set this should allow the
device to receive larger packets (>9k bytes) without loss of syn-
chronization.
1 = 2ms
0 = 722us (per ANSI X3.263: 1995 (TP-PMD) 7.2.3.3e)
RESERVED
0
RESERVED:
Must be zero.
FORCE_100_OK
0, RW
Force 100Mb/s Good Link:
1 = Forces 100Mb/s Good Link.
0 = Normal 100Mb/s operation.
RESERVED
0
RESERVED:
Must be zero.
RESERVED
0
RESERVED:
Must be zero.
NRZI_BYPASS
0, RW
NRZI Bypass Enable:
1 = NRZI Bypass Enabled.
0 = NRZI Bypass Disabled.
RESERVED
0
RESERVED:
Must be zero.
RESERVED
0
RESERVED:
Must be zero.
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