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5 error register (uart), 5 error register (uart) (errr) -8, Maxq7667 user’s guide – Maxim Integrated MAXQ7667 User Manual

Page 138: 5 error register (uart) (errr)

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8.3.5 Error Register (UART) (ERRR)

Register Description:

Error Register

Register Name:

ERRR

Register Address:

Module 03h, Index 0Dh

Bit 7: Reserved. Read returns 0.

Bit 6: Other Communications Error (OTE). This bit is set to 1 by the peripheral whenever a communication error occurs that is not
covered by one of the other error flags.

Bit 5: Data Mismatch Error (DME). This bit is set to 1 by the peripheral when a transmitted byte is not read back correctly.

Bit 4: Checksum Error (CKE). This bit is set to 1 by the peripheral when a received checksum does not match the calculated check-
sum for that frame.

Bit 3: Parity Bit 1 (P1). This bit reflects the status of the P1 parity bit for the most recently received frame. It is updated by the periph-
eral every time a header is received.

Bit 2: Parity Bit 1 Error (P1E). This bit is set to 1 by the peripheral whenever a header is received with an error in the P1 parity bit. It
is cleared to 0 by the peripheral when a header is received with the correct value in the P1 parity bit.

Bit 1: Parity Bit 0 (P0). This bit reflects the status of the P0 parity bit for the most recently received frame. It is updated by the periph-
eral every time a header is received.

Bit 0: Parity Bit 0 Error (P0E). This bit is set to 1 by the peripheral whenever a header is received with an error in the P0 parity bit. It
is cleared to 0 by the peripheral when a header is received with the correct value in the P0 parity bit.

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8-8

MAXQ7667 User’s Guide

r = read

Note: ERRR is cleared to 00h on all forms of reset.

Bit #

7

6

5

4

3

2

1

0

Name

OTE

DME

CKE

P1

P1E

P0

P0E

Reset

0

0

0

0

0

0

0

0

Access

r

r

r

r

r

r

r

r