H8SLASH3003 datasheet(221/715 Pages) RENESAS

221 / 715 page

8.4.4 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 ITU 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 ETCR 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 receive-data-full

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

Table 8-8 indicates the register functions in repeat mode.

Table 8-8 Register Functions in Repeat Mode

Function

Activated by

SCI Receive-

Data-Full

Other

Interrupt

Activation

Initial Setting

Operation

Destination

Source

Destination or

Incremented or

address

source address decremented at

each transfer until

ETCRH reaches

H'0000, then restored

to initial value

Source

Destination Source or

Held fixed

address

destination

address

Transfer counter

Number of

Decremented once

transfers

per transfer unti

H'0000 is reached,

then reloaded from

ETCRL

Initial transfer count

Number of

Held fixed

transfers

Legend

MAR:

Memory address register

IOAR: I/O address register

ETCR: Execute transfer count register

MAR

All 1s

IOAR

ETCRH

ETCRL

203

H8/3003 数据表(PDF) 221 Page - Renesas Technology Corp

H8/3003 数据表(HTML) 221 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

H8/3003 数据表(PDF) 221 Page - Renesas Technology Corp

H8/3003 数据表(HTML) 221 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