AT83C5103 datasheet(25/64 Pages) ATMEL

25 / 64 page

AT8xC5103

4134C–8051–09/04

Reset Value = 00010100b

Serial Peripheral Status Register

(SPSTA)

The Serial Peripheral Status Register contains flags to signal the following conditions:

•

Data transfer complete

•

Write collision

•

Inconsistent logic level on SS pin (mode fault error)

Table 12 describes the SPSTA register and explains the use of every bit in the register.

Reset Value = 00X0XXXXb

SPR0

R/W

100: FCLK PERIPH /32

101: FCLK PERIPH /64

110: FCLK PERIPH /128

111: Don’t Use

Bit

Number

Bit Mnemonic

R/W Mode Description

Table 12. SPSTA: Serial Peripheral Status and Control Register - SPSTA (S:C4h)

543210

SPIF

WCOL

SSERR

MODF

Bit

Number

Bit Mnemonic R/W Mode Description

SPIF

Serial Peripheral Data Transfer Flag

Clear by hardware to indicate data transfer is in progress or has been approved by a clearing sequence.

Set by hardware to indicate that the data transfer has been completed.

6WCOL

Write Collision Flag

Cleared by hardware to indicate that no collision has occurred or has been approved by a clearing sequence.

Set by hardware to indicate that a collision has been detected.

SSERR

Synchronous Serial Slave Error Flag

Set by hardware when SS is deasserted before the end of a received data.

Cleared by disabling the SPI (clearing SPEN bit in SPCON).

4MODF

Mode Fault

Cleared by hardware to indicate that the SS pin is at appropriate logic level, or has been approved by a

clearing sequence.

Set by hardware to indicate that the SS pin is at inappropriate logic level

R/W

Reserved

The value read from this bit is indeterminate. Do not set this bit.

R/W

Reserved

The value read from this bit is indeterminate. Do not set this bit.

R/W

Reserved

The value read from this bit is indeterminate. Do not set this bit.

R/W

Reserved

The value read from this bit is indeterminate. Do not set this bit.

AT83C5103 Datasheet(PDF) 25 Page - ATMEL Corporation

AT83C5103 Datasheet(HTML) 25 Page - ATMEL Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

Datasheet Download

Link URL