Clearing Request Queues By Dtr Format; Table 14.16 Notification Of Transfer Channel In Eight-Channel Ddt Mode; Table 14.17 Function Of - Hitachi SH7751 Hardware Manual

Table 14.16 Notification of Transfer Channel in Eight-Channel DDT Mode

  
 

/
1
0

Table 14.17 Function of


= High


= Low
14.8.4

Clearing Request Queues by DTR Format

In DDT mode, the request queues of any channel can be cleared by using DTR.ID, DTR.MD,
DTR.SZ, and DTR.COUNT [7:4] in a DTR format. This function is only available when
DMAOR.DBL = 1. Table 14.18 shows the DTR format settings for clearing request queues.
ID[1:0]
00
01
10
11
00
01
10
11
 
Function of
Bus available (data-bus enabled)
Notification of channel number (
Transfer Channel
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7


Rev. 3.0, 04/02, page 563 of 1064


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