TMPR3916 datasheet(166/225 Pages) TOSHIBA

166 / 225 page

Chapter 9 Synchronous Serial I/O (TXSEI)

Preliminary

9-11

SEI Status Register (SESR)

In the SEI Status Register, the status flags can only be read, while error flags are cleared by writing a “1”

value to the respective bit position. Writing a “0” to the Error Flags has no effect.

Bit

3130

292827

262524

Name



Bit

2322

212019

181716

Name



Bit

1514

131211

Name

TBSI

RBSI

TBS

RBS

Bit

543

210

Name

SEOE

SEUE

SETF



IFSD

SIDLE

STRDY

SRRDY

Bit

Name

Function

Reset

Value

R/W

31:16



Unused

0x0000

TBSI

Transmit Buffer Status Indicator

This register indicates a transmit fill level interrupt

RBSI

Receive Buffer Status Indicator

This register indicates a receive fill level interrupt

13:11

TBS

Transmit Buffer Status

This register shows the status of the transmit buffer.

000 = Transmit Buffer Empty

001 = 1 transfer stored

010 = 2 transfers stored

011 = 3 transfers stored

100 = 4 transfers stored, Buffer full

000

10:8

RBS

Receive Buffer Status

This register shows the status of the receive buffer.

000 = Receive Buffer Empty

001 = 1 transfer stored

010 = 2 transfers stored

011 = 3 transfers stored

100 = 4 transfers stored, Buffer full

000

SEOE

SEI Overflow Error:

This flag indicates that a value in the receive buffer has been

overwritten, before it could be read. This flag always reads “0” in

master mode. In slave mode, it can be cleared by writing a “1” value

to it. This flag will be cleared by setting the module in configuration

mode.

R/C

SEUE

SEI Underflow Error:

This flag indicates that an external master tried to shift the shift

data register. This flag always reads “0” in master mode. In slave

mode it is cleared by writing a “1” to it. This flag will be cleared by

setting the module in configuration mode.

R/C

SETF

SEI Transfer Format Error:

This flag indicates a violation of the transfer format. See paragraph

"Transfer Format Error". It can be cleared by writing a “1” to it. This

flag will be cleared by setting the module in configuration mode.

R/C



Unused

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