DS280DF810: How to reduce error count DS280DF810

jukkarin srinan

Part Number: DS280DF810

Right now we got use DS280DF810 for application checker performance of QFSP28. but we found unstable on read error count.

i'm not sure how to config on chip?

0 Rodrigo Natal over 5 years ago

Hi,

The PRBS checker enable channel register writes routine is shown below.

REG Value Mask Comment

0D 00 80 //Turn on de-serializer

79 40 40 //Set prbs_chkr_en=1

30 00 08 //Set prbs_en_dig_clk=0

30 08 08 //Set prbs_en_dig_clk=1

30 10 10 //Force reload of PRBS checker seed

30 00 10 //Undo force reload of PRBS checker seed

82 40 40 //Reset PRBS counters

82 00 40 //Un-reset PRBS counters

01 //Read PRBS status

Cordially,

Rodrigo Natal

HSSC Applications Engineer

0 jukkarin srinan over 5 years ago in reply to Rodrigo Natal

Thank you so much for support

0 jukkarin srinan over 5 years ago in reply to Rodrigo Natal

Hi Rodrigo Natal

i have one question, do you have how to read error count on chip?

0 Rodrigo Natal over 5 years ago in reply to jukkarin srinan

Hi, see below.

Read PRBS Checker Error Count

Read the PRBS checker error count, assuming the PRBS checker has already been enabled.

Table. Register Writes to Read PRBS Checker Error Count

STEP	SHARED/ CHANNEL REGISTER SET	OPERATION	REGISTER ADDRESS [HEX]	REGISTER VALUE [HEX]	WRITE MASK [HEX]	COMMENT
1	Channel	Write	82	80	80	Freeze the current error counter
2	Channel	Read	83			Reg_0x83[2:0] = prbs_err_cnt[10:8]
3	Channel	Read	84			Reg_0x84[7:0] = prbs_err_cnt[7:0]
4	Total error count = ((Reg_0x83 & 0x03) << 8) \| Reg_0x84
5	Channel	Write	82	00	80	Un-freeze the PRBS error counter

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