
228
Agere Systems Inc.
Data Sheet
May 2001
155/622/2488 Mbits/s Data Interface
TDAT042G5 SONET/SDH
Register Descriptions
(continued)
DE Registers
(continued)
Table 123. Registers 0x1090
—
0x1097: ATM Unassigned Cell Match Mask (R/W)
Reset default of registers = 0xFFFF.
Table 124. Registers 0x1098
—
0x109F: ATM Unassigned Cell Registers (R/W)
Reset default of registers = 0x0000.
Address
(Hex)
1090
—
1097
Bit #
Name
Function
Reset Default
—
ATM_USM_[0
—
3][31:0]
ATM Unassigned Cell Match Mask
Channel [0
—
3].
This 32-bit register defines
which of the 32 bits will be used for
comparison between the unassigned cell
register and the header data in the ATM
framer. A value of 1 enables the comparison
with the corresponding bit in the ATM
unassigned cell register.
ATM_USM_0[31:16]
[31:24] is the MSByte of ATM_USM_0.
ATM_USM_0[15:0]
[7:0] is the LSByte of ATM_USM_0.
ATM_USM_1[31:16]
[31:24] is the MSByte of ATM_USM_1.
ATM_USM_1[15:0]
[7:0] is the LSByte of ATM_USM_1.
ATM_USM_2[31:16]
[31:24] is the MSByte of ATM_USM_2.
ATM_USM_2[15:0]
[7:0] is the LSByte of ATM_USM_2.
ATM_USM_3[31:16]
[31:24] is the MSByte of ATM_USM_3.
ATM_USM_3[15:0]
[7:0] is the LSByte of ATM_USM_3.
0xFFFF
1090
1091
1092
1093
1094
1095
1096
1097
15
—
0
15
—
0
15
—
0
15
—
0
15
—
0
15
—
0
15
—
0
15
—
0
0xFFFF
0xFFFF
0xFFFF
0xFFFF
0xFFFF
0xFFFF
0xFFFF
0xFFFF
Address
(Hex)
1098
—
109F
Bit #
Name
Function
Reset
Default
0x0000
—
ATM_USG_[0
—
3][31:0]
ATM Unassigned Cell Register Channel 0.
This 32-bit register will store the expected
header value for unassigned cells. If the ATM
framer sees a header for an ATM packet which
matches this register at the bit positions
designated by the ATM unassigned cell match
mask, the packet will be treated as an
unassigned cell.
[31:24] is the MSByte of ATM_USG_0.
[7:0] is the LSByte of ATM_USG_0.
[31:24] is the MSByte of ATM_USG_1.
[7:0] is the LSByte of ATM_USG_1.
[31:24] is the MSByte of ATM_USG_2.
[7:0] is the LSByte of ATM_USG_2.
[31:24] is the MSByte of ATM_USG_3.
[7:0] is the LSByte of ATM_USG_3.
1098
1099
109A
109B
109C
109D
109E
109F
15
—
0
15
—
0
15
—
0
15
—
0
15
—
0
15
—
0
15
—
0
15
—
0
ATM_USG_0[31:16]
ATM_USG_0[15:0]
ATM_USG_1[31:16]
ATM_USG_1[15:0]
ATM_USG_2[31:16]
ATM_USG_2[15:0]
ATM_USG_3[31:16]
ATM_USG_3[15:0]
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000