Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

Z80 Datasheet(PDF) 135 Page - Zilog, Inc.

Part # Z80
Description  Z80 CPU PERIPHERALS
PDF  330 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z80 Datasheet(HTML) 135 Page - Zilog, Inc.

Back Button Z80 Datasheet HTML 131Page - Zilog, Inc. Z80 Datasheet HTML 132Page - Zilog, Inc. Z80 Datasheet HTML 133Page - Zilog, Inc. Z80 Datasheet HTML 134Page - Zilog, Inc. Z80 Datasheet HTML 135Page - Zilog, Inc. Z80 Datasheet HTML 136Page - Zilog, Inc. Z80 Datasheet HTML 137Page - Zilog, Inc. Z80 Datasheet HTML 138Page - Zilog, Inc. Z80 Datasheet HTML 139Page - Zilog, Inc. Next Button
Zoom Inzoom in Zoom Outzoom out
 135 / 330 page
background image
< %27 2GTKRJGTCNU
7UGT /CPWCN
UM008101-0601
Direct Memory Access

Figure 47.
Read Register 0 through Read Register 6
Byte Counter (RR1, RR2)
This 16-bit counter is cleared to 0 by the LOAD, CONTINUE, and RESET
commands only. When the DMA begins transferring or searching, the byte
counter increments by one at the end of each read cycle and the byte counter
is compared with the programmed contents of the block length register,
determining end-of-block. The number of bytes read in a transfer always
equals the number of bytes written because the DMA completes any transfer
it starts, even when stopping on byte matches in transfer/search operations.
D7 D6 D5 D4 D3 D2 D1 D0
Status Byte
XX
1 = DMA Operation has Occurred
0 = Ready Active
0 = Interrupt Pending
0 = Match Found
0 = End-of-Block
Byte Counter (Low Byte)
Read Register 1
Byte Counter (High Byte)
Read Register 2
Port A Address Counter (Low Byte)
Read Register 3
Port A Address Counter (High Byte)
Read Register 4
Port B Address Counter (Low Byte)
Read Register 5
Port B Address Counter (High Byte)
Read Register 6



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


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com