UPD360 datasheet(138/221 Pages) MICROCHIP

138 / 221 page

UPD360

DS00002084C-page 138

 2016-2017 Microchip Technology Inc.

11.4.1.9

TX Turnaround Time Register (TX_TA_TIME)

This register controls the IFG timer.

11.4.1.10

TX Abort Status Register (TX_ABORT_STAT)

This field is used in conjunction with the TX_ABORTED interrupt and provides details for why the TX was aborted. Bits

in this register are sticky, i.e., once any bit is set by hardware this field cannot be updated by hardware until software

clears the field.

Address:

1A08h

Size:

8 bits

Bits

Description

Type

Default

7:6

RESERVED

5:0

TA_TIME

Turnaround time in us.

Range: 1-63, specification: 25us

A value of 0 is invalid and hardware does not check for validity.

Hardware uses a free running 1us pulse generator, thus, the value of this field

should be 1 more than desired to ensure the minimum time (26d).

R/W

010101b

Address:

1A09h

Size:

8 bits

Note:

Bits in this register are set by hardware and must be cleared by software. The bits are not mutually exclu-

sive, i.e., more than one bit may be set depending on the circumstance.

Bits

Description

Type

Default

TX_ABORT_STAT[7]

While waiting for GoodCRC, TX aborted due to Protocol Error (i.e., received

other than GoodCRC or Ping message while waiting for GoodCRC or Receiv-

ing a Hard or Cable Reset.)

R/W1C

TX_ABORT_STAT[6]

During software issued TX, TX was aborted due to RX (including Hard or

Cable Reset) while waiting for bus turnaround or waiting for line to go idle.

R/W1C

TX_ABORT_STAT[5]

Auto-retry aborted due to RX (including Hard or Cable Reset) while waiting for

bus turnaround or while waiting for line to go idle.

R/W1C

TX_ABORT_STAT[4]

Auto-retry aborted due to line being busy after bus turnaround.

R/W1C

RESERVED

TX_ABORT_STAT[2]

During software issued TX, line was busy after bus turnaround.

R/W1C

TX_ABORT_STAT[1]

Software issued abort while software issued TX was in process.

R/W1C

TX_ABORT_STAT[0]

Software issued GO with TX disabled.

R/W1C

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