
236
Agere Systems Inc.
Data Sheet
May 2001
155/622/2488 Mbits/s Data Interface
TDAT042G5 SONET/SDH
Register Descriptions
(continued)
DE Registers
(continued)
Table 138. Registers 0x10FC
—
0x10FF: PPP Header Detach Search (R/W)
Reset default of register 10FC = 0xC001.
Reset default of register 10FD = 0xC002.
Reset default of register 10FE = 0xC004.
Reset default of register 10FF = 0xC008.
Address
(Hex)
10FC
—
10FF
Bit #
Name
Function
Reset
Default
See
below.
—
PPP_Rx_CHK_CH
[0
—
3][15:0]
Channel [0
—
3] PPP Header Search.
This register
will control the headers that channel [0
—
3] PPP
detach block looks for. Mismatched headers will be
noted in a separate counter (addresses 0x1118
—
0x111F).
Controls the way the PPP headers are searched for
and passed through.
15
—
14
—
00 = Pass any 32-bit header where the first 16 bits
are 0xFF03. The 0xFF03 (2 bytes) is stripped, and
the protocol field remains.
01 = Pass only specified uncompressed patterns
(first 16 bits are 0xFF03; last 16 bits are defined by
fixed patterns and/or register values). A 32-bit match
is performed, and the 32 bits are all stripped. See
below.
10 = Pass only specified compressed pattern (all 16
bits are defined by fixed patterns and/or register
values). A search is made for one of the provisioned
headers, and those 16 bits are stripped. See below.
11 = Pass any pattern defined by fixed patterns and/
or registers values. See below.
A value of 1 in this bit will enable a search for the
16-bit fixed value 0x8021.
A value of 1 in this bit will enable a search for the
16-bit fixed value 0x0021.
A value of 1 in this bit will enable a search of the
16-bit value in register address 0x10FB.
A value of 1 in this bit will enable a search of the
16-bit value in register address 0x10FA.
A value of 1 in this bit will enable a search of the
16-bit value in register address 0x10F9.
A value of 1 in this bit will enable a search of the
16-bit value in register address 0x10F8.
A value of 1 in this bit will enable a search of the
16-bit value in register address 0x10F7.
A value of 1 in this bit will enable a search of the
16-bit value in register address 0x10F6.
A value of 1 in this bit will enable a search of the
16-bit value in register address 0x10F5.
A value of 1 in this bit will enable a search of the
16-bit value in register address 0x10F4.
11
13
—
0
12
—
0
11
—
0
10
—
0
9
—
0
8
—
0
7
—
0
6
—
0
5
—
0
4
—
0