tdat04622 ETC-unknow, tdat04622 Datasheet - Page 254

• Manufacturer Part Number: tdat04622
• Description: Tdat Sonet/sdh 155/622/2488 Mbits/s Data Interfaces
• Manufacturer: ETC-unknow

TDAT042G5 SONET/SDH
155/622/2488 Mbits/s Data Interface
Register Descriptions
DE Registers
Table 120. Receive Type and Mode Control Summary Table (Registers 0x1040—0x1043)
* No discard—Pass al l ATM cells with no error correction.
† Discard—Discard cells with multiple-bit header errors. Correct and pass all cells with single-bit header errors.
‡ Smart discard—Discard cells with multiple-bit header errors, and only correct and pass the first of back-to-back single-bit header errors.
§ Discard, no correction—Discard all cells with header errors.
226
without CRC
(reset mode)
SDL without
Transparent
Not defined
Type, Bits
HDLC with
SDL with
Payload
payload
[10:8]
HDLC
CRC
CRC
CRC
PPP
ATM
000
001
010
011
100
101
110
111
0 = discard
1 = no discard
0
0
0 = byte sync
1 = bit sync
0 = byte sync
1 = bit sync
0 = byte sync
1 = bit sync
0
0
(continued)
7
0 = header
stripped
1 = header
on
0
0
0
0 = length
stripped
1 = length on
0 = length
stripped
1 = length on
0
0
(continued)
6
0 = CRC-16
1 = CRC-32
0 = CRC-16
1 = CRC-32
0
00 = X
01 = no unscrambling
10 = X
11 = no unscrambling
0
0 = CRC-16
1 = CRC-32
0
0
5
43
31
unscrambling
unscrambling
0 = CRC
stripped
1 = CRC on
0 = CRC
stripped
1 = CRC on
0
0
0 = CRC
stripped
1 = CRC on
0
0
Payload Control, Bits [7:0]
4
0 = CRC reversed
1 = CRC normal
0 = CRC reversed
1 = CRC normal
0
0 = unassigned
cell discard
1 = unassigned
cell pass-
through
Length offset (0x0 to 0xF)
Length offset (0x0 to 0xF)
0
0
3
0 = no dry mode
1 = dry mode
0 = no dry mode
1 = dry mode
0 = no dry mode
1 = dry mode
0 = idle cell
discard
1 = idle cell
passthrough
0
0
2
00 = no unscrambling
01 = post-unscrambling
10 = pre-unscrambling
11 = undefined
00 = no unscrambling
01 = post-unscrambling
10 = pre-unscrambling
11 = undefined
00 = no unscrambling
01 = post-unscrambling
10 = pre-unscrambling
11 = undefined
00 = no discard*
01 = discard
10 = smart discard
11 = discard, no
correction
0
0
Agere Systems Inc.
1
§
Data Sheet
0
0
†
May 2001
0
‡