H8SLASH3028F datasheet(246/923 Pages) RENESAS

246 / 923 page

Rev. 2.00, 09/03, page 216 of 890

7.4.4

Repeat Mode

Repeat mode is useful for cyclically transferring a bit pattern from a table to the programmable

timing pattern controller (TPC) in synchronization, for example, with 16-bit timer compare match.

Repeat mode can be selected for each channel independently.

One byte or word is transferred per request in repeat mode, as in I/O mode. A designated number

of these transfers are executed. One address is specified in the memory address register (MAR),

the other in the I/O address register (IOAR). At the end of the designated number of transfers,

MAR and ETCRH are restored to their original values and operation continues. The direction of

transfer is determined automatically from the activation source. The transfer is from the address

specified in IOAR to the address specified in MAR if activated by an SCI channel 0 receive-data-

full interrupt, and from the address specified in MAR to the address specified in IOAR otherwise.

Table 7.8 indicates the register functions in repeat mode.

Table 7.8

Function

Activated by

SCI 0 Receive-

Data-Full

Interrupt

Other

Activation Initial Setting

Operation

Destination

address

Source

address

Destination or

source start

address

Incremented or

decremented at

each transfer until

ETCRH reaches

H'0000, then restored

to initial value

Source

address

Destination

address

Source or

destination

address

Held fixed

Transfer counter

Number of

transfers

Decremented once

per transfer until

H'0000 is reached,

then reloaded from

ETCRL

Initial transfer count

Number of

transfers

Held fixed

Legend

MAR:

Memory address register

IOAR:

I/O address register

ETCR: Execute transfer count register

MAR

All 1s

IOAR

ETCRH

ETCRL

H8/3028F 数据表(PDF) 246 Page - Renesas Technology Corp

H8/3028F 数据表(HTML) 246 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

数据表下载

链接网址

H8/3028F 数据表(PDF) 246 Page - Renesas Technology Corp

H8/3028F 数据表(HTML) 246 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

数据表 下载

链接网址

数据表下载