MSC1202Y2RHHT datasheet(30/92 Pages) TI

30 / 92 page

MSC1200

MSC1201

MSC1202

SBAS317E − APRIL 2004 − REVISED MAY 2006

www.ti.com

SPI

The MSC120x implement a basic SPI interface that

includes the hardware for simple serial data transfers.

Figure 17 shows a block diagram of the SPI. The

peripheral supports master and slave modes, full duplex

data transfers, both clock polarities, both clock phases, bit

order, and slave select.

The timing diagram for supported SPI data transfers is

shown in Figure 18.

The I/O pins needed for data transfer are Data In (DIN),

Data Out (DOUT) and serial clock (SCK). The slave select

(SS) pin can also be used to control the output of data on

DOUT.

The DIN pin is used for shifting data in for both master and

slave modes.

The DOUT pin is used for shifting data out for both master

and slave modes.

The SCK pin is used to synchronize the transfer of data for

both master and slave modes. SCK is always generated

by the master. The generation of SCK in master mode can

be done either in software (by simply toggling the port pin),

or by configuring the output on the SCK pin via PASEL

(SFR F2h). A list of the most common methods of

generating SCK follows, but the complete list of clock

sources can be found by referring to the PASEL SFR.

D Toggle SCK by setting and clearing the port pin.

D Memory Write Pulse (WR) that is idle high.

Whenever an external memory write command

(MOVX) is executed, a pulse is seen on P3.6. This

method can be used only if CPOL is set to ‘1’.

D Memory Write Pulse toggle version. In this mode,

SCK toggles whenever an external write command

(MOVX) is executed.

D T0_Out signal can be used as a clock. A pulse is

generated on SCK whenever Timer 0 expires. The

idle state of the signal is low, so this can be used

only if CPOL is cleared to ‘0’.

D T0_Out toggle. SCK toggles whenever Timer 0

expires.

D T1_Out signal can be used as a clock. A pulse is

generated whenever Timer 1 expires. The idle state

of the signal is low, so this can be used only if CPOL

is cleared to ‘0’.

D T1_Out toggle. SCK toggles whenever Timer 1

expires.

SPI /I2C

Data Write

SPICON

I2CCON

I2C

Stretch

Control

Counter

Start/Stop

Detect

SPI /I2C

Data Read

Pad Control

DOUT

P1.2

P1.4

P3.6

P1.3

Logic

DOUT

TX_CLK

RX_CLK

SCK/SCL

CNT_CLK

CNT INT

I2C INT

DIN

CLKS (refer to PASEL, SFR F2h)

SCK

DIN

Figure 17. SPI/I2C Block Diagram

MSC1202Y2RHHT 데이터시트(PDF) 30 Page - Texas Instruments

MSC1202Y2RHHT 데이터시트(HTML) 30 Page - Texas Instruments

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

데이터시트 다운로드

링크 URL