SH7261 datasheet(716/1348 Pages) RENESAS

716 / 1348 page

Section 16 Serial Communication Interface with FIFO (SCIF)

Rev. 2.00 Sep. 07, 2007 Page 684 of 1312

REJ09B0320-0200

16.3.7

Serial Status Register (SCFSR)

SCFSR is a 16-bit register. The upper 8 bits indicate the number of receives errors in the receive

FIFO data register, and the lower 8 bits indicate the status flag indicating SCIF operating state.

The CPU can always read and write to SCFSR, but cannot write 1 to the status flags (ER, TEND,

TDFE, BRK, RDF, and DR). These flags can be cleared to 0 only if they have first been read

(after being set to 1). Bits 3 (FER) and 2 (PER) are read-only bits that cannot be written. SCFSR is

initialized by a power-on reset or in deep standby mode.

00000000

01100000

RRRRRRRR

R/(W)*R/(W)*R/(W)*R/(W)*

R/(W)*R/(W)*

Bit:

Initial value:

R/W:

Note:

* Only 0 can be written to clear the flag after 1 is read.

PER[3:0]

FER[3:0]

TEND TDFE BRK

FER

PER

RDF

Bit

Bit Name

Initial

Value

R/W

Description

15 to 12

PER[3:0]

0000

Number of Parity Errors

Indicate the quantity of data including a parity error in

the receive data stored in the receive FIFO data

the value indicated by bits 15 to 12 represents the

number of parity errors in SCFRDR. When parity

errors have occurred in all 16-byte receive data in

SCFRDR, PER3 to PER0 show 0.

11 to 8

FER[3:0]

0000

Number of Framing Errors

Indicate the quantity of data including a framing error

in the receive data stored in SCFRDR. After the ER

bit in SCFSR is set, the value indicated by bits 11 to 8

represents the number of framing errors in SCFRDR.

When framing errors have occurred in all 16-byte

receive data in SCFRDR, FER3 to FER0 show 0.

SH7261 Datasheet(PDF) 716 Page - Renesas Technology Corp

SH7261 Datasheet(HTML) 716 Page - Renesas Technology Corp

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 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL