H8SXSLASH1663R datasheet(598/1504 Pages) RENESAS

598 / 1504 page

Section 12 Data Transfer Controller (DTC)

Rev. 2.00 Sep. 24, 2008 Page 566 of 1468

REJ09B0412-0200

12.2.6

DTC Transfer Count Register B (CRB)

CRB is a 16-bit register that designates the number of times data is to be transferred by the DTC in

block transfer mode. It functions as a 16-bit transfer counter (1 to 65,536) that is decremented by 1

every time data is transferred, and bit DTCEn (n = 15 to 0) corresponding to the activation source

is cleared and then an interrupt is requested to the CPU when the count reaches H'0000. The

transfer count is 1 when CRB = H'0001, 65,535 when CRB = H'FFFF, and 65,536 when CRB =

H'0000.

CRB is not available in normal and repeat modes and cannot be accessed directly by the CPU.

12.2.7

DTC enable registers A to F (DTCERA to DTCERF)

DTCER, which is comprised of eight registers, DTCERA to DTCERF, is a register that specifies

DTC activation interrupt sources. The correspondence between interrupt sources and DTCE bits is

shown in table 12.1. Use bit manipulation instructions such as BSET and BCLR to read or write a

DTCE bit. If all interrupts are masked, multiple activation sources can be set at one time (only at

the initial setting) by writing data after executing a dummy read on the relevant register.

Bit

Bit Name

Initial Value

R/W

DTCE15

R/W

DTCE14

R/W

DTCE13

R/W

DTCE12

R/W

DTCE11

R/W

DTCE10

R/W

DTCE9

R/W

DTCE8

R/W

Bit

Bit Name

Initial Value

R/W

DTCE7

R/W

DTCE6

R/W

DTCE5

R/W

DTCE4

R/W

DTCE3

R/W

DTCE2

R/W

DTCE1

R/W

DTCE0

R/W

H8SX/1663R Datenblatt(PDF) 598 Page - Renesas Technology Corp

H8SX/1663R Datenblatt(HTML) 598 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

Datenblatt Download

Link URL