SIO1007 datasheet(35/108 Pages) MICROCHIP

35 / 108 page

 2005 - 2015 Microchip Technology Inc.

DS00002020A-page 35

SIO1007

Note 10-1

HPMODE is CR29, BIT 4 (see CR29 on page 75). Refer to Figure 10-1, "Infrared Interface Block

Diagram" for HPMODE implementation.

The FAST bit is used to select between the SIR mode and FIR mode receiver, regardless of the transceiver type. If FAST

= 1, the FIR mode receiver is selected; if FAST = 0, the SIR mode receiver is selected (Table 10-2).

10.2.2

IR HALF DUPLEX TURNAROUND DELAY TIME

If the Half Duplex option is chosen there is an IR Half Duplex Time-out that constrains IRCC direction mode changes.

This time-out starts as each bit is transferred and prevents direction mode changes until the time-out expires. The timer

is restarted whenever new data arrives in the current direction mode. For example, if data is loaded into the transmit

buffer while a character is being received, the transmission will not start until the last bit has been received and the time-

out expires. If the start bit of another character is received during this time-out, the timer is restarted after the new char-

acter is received. The Half Duplex Time-out is programmable from 0 to 25.5ms in 100 s increments (see CR2D on page

77).

TABLE 10-1:

FIR TRANSCEIVER MODULE-TYPE SELECT

HP Mode (Note 10-1)Function

0IR Mode

IRRX3

TABLE 10-2:

IR RX DATA PIN SELECTION

Control Signals

Inputs

FAST

HPMODE

RX1

RX2

RX1=RXD2

RX2=IRRX2

RX1=RXD2

RX2=IRRX2

RX1=IR Mode/IRRX3

RX2=IR Mode/IRRX3

SIO1007 数据表(PDF) 35 Page - Microchip Technology

SIO1007 数据表(HTML) 35 Page - Microchip Technology

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

数据表下载