DS33X42DK Maxim Integrated Products, DS33X42DK Datasheet - Page 92
DS33X42DK
Manufacturer Part Number
DS33X42DK
Description
Power Management Modules & Development Tools Ethernet Over PDH Ma PDH Mapping Devices
Manufacturer
Maxim Integrated Products
Datasheet
1.DS33X11.pdf
(375 pages)
Specifications of DS33X42DK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 92 of 375
- Download datasheet (3Mb)
8.20.3.2GFP-F Linear Extension
When configured for GFP Linear Extension mode, an additional header is required. The Encapsultor’s Tag 1
Insertion function (in PP.ET1DHR and PP.ET1DLR, enabled with PP.EMCR.ET1E) is used to insert the 4-byte
GFP Extension Header value. If receiving GFP Linear Extension frames from the WAN, the PP.DMCR.DR2E bit
should be set to 1 in order to remove the incoming GFP CID, Spare, and eHEC bytes from the data stream.
Table 8-20. GFP CID/Spare/eHEC (Extension Header) Field Definition
The final two bytes of the Linear Extension Header field are used to perform header validation. The eHEC
calculation is a CRC-16 operation in which the two byte CID (and Spare) value is multiplied by X
(modulo 2) by the polynomial X
initialization value for the operation is 0x0000. The MSB of the CID is bit 16, and the resulting remainder of the
operation is the eHEC. To avoid requiring this algorithm implementation in the user’s software, several example
CID + Spare values and the corresponding eHEC values are provided in the table below.
Table 8-21. Example CID + Spare + eHEC Values
Rev: 063008
________________________________________________ DS33X162/X161/X82/X81/X42/X41/X11/W41/W11
Frame Byte Number
CID + Spare
(hex)
FF00
0000
0100
0200
0400
0800
1000
2000
4000
8000
11 & 12
9 & 10
Bit #
eHEC (hex)
CCC4
0DCC
89A9
06E6
1B98
03FF
0000
3331
6662
0373
15
15
16
14
+X
12
13
+X
5
+1. Another common representation for this polynomial is 0x1021. The
12
CID
eHEC
11
10
9
8
7
6
5
SPARE
4
eHEC
3
2
16
1
and divided
92 of 375
0
0
Related parts for DS33X42DK
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
MAX7528KCWPMaxim Integrated Products [CMOS Dual 8-Bit Buffered Multiplying DACs]
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Single +5V, fully integrated, 1.25Gbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Single +5V, fully integrated, 155Mbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
VRD11/VRD10, K8 Rev F 2/3/4-Phase PWM Controllers with Integrated Dual MOSFET Drivers
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Highly Integrated Level 2 SMBus Battery Chargers
Manufacturer:
Maxim Integrated Products
Datasheet:
Part Number:
Description:
Current Monitor and Accumulator with Integrated Sense Resistor; ; Temperature Range: -40°C to +85°C
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
TSSOP 14/A/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
TSSOP 14/A/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
QFN 16/A/AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
TDFN/A/65V, 1A, 600KHZ, SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED SWI
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
Integrated Temperature Controller f
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
SOT23-6/I/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
SOT23-6/I/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
EVALUATION KIT/2.4GHZ TO 2.5GHZ 802.11G/B RF TRANSCEIVER WITH INTEGRATED PA
Manufacturer:
Maxim Integrated Products
Part Number:
Description:
QFN/E/DUAL PCIE/SATA HIGH SPEED SWITCH WITH INTEGRATED BIAS RESISTOR
Manufacturer:
Maxim Integrated Products
Datasheet: