UPD360 datasheet(122/221 Pages) MICROCHIP

122 / 221 page

UPD360

DS00002084C-page 122

 2016-2017 Microchip Technology Inc.

TABLE 11-4:

CONDITIONS AND RESULTS FOR DROPPING GOOD PACKETS

Event

Result

Expecting GoodCRC

Received soft-reset with SOP of RX

matching SOP of TX

Packet stored

with error status

RX_PKT_STAT[2]

(PCOL_ERROR)

Received GoodCRC with correct SOP

type and message ID

Packet dropped

Received GoodCRC with wrong SOP

type or wrong message ID

Received other than GoodCRC or Ping

with SOP or RX matching SOP of TX and

first message of this SOP type or mes-

sage ID not matching last message ID of

this SOP type (i.e., not a duplicate)

Packet stored,

with error status

RX_PKT_STAT[2]

(PCOL_ERROR)

ELSE IF

Auto Response Enabled

Received soft-reset

Packet stored,

message ID saved

Received other than GoodCRC or soft-

reset and first message of this SOP type

Received other than GoodCRC or soft-

reset and message ID does not match

last message ID of this SOP type

Received other than GoodCRC or soft-

reset and message ID matches last mes-

sage ID of this SOP type

Packet dropped

with duplicate status

RX_PKT_STAT[1]

(DUPLICATE_PACKET)

Received GoodCRC

Packet stored

ELSE

Received other than GoodCRC

(including soft reset)

packet stored,

message ID saved

Received GoodCRC

Packet stored

Note:

If auto-response is enabled, any time a packet other than a GoodCRC is stored, a GoodCRC response is

transmitted.

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