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SDA 6000
PRELIMINARY DATA SHEET
Version 2.1
C16X Microcontroller
4 - 25
Micronas
Figure 4-9
Four-Phase Handshake
• Phase I: The controller requests a direct mode command which has not yet been
executed by the EBI. The controller must not reset the EDMR bit until the EBI
acknowledges the EDMA bit (EDMA polling required).
• Phase II: The EBI acknowledges the EDMA bit after executing the requested direct
mode command. The EBI will not reset the EDMA bit before the requested EDMR bit
is reset.
• Phase III: The requested EDMR bit is reset while the acknowledged EDMA bit is still
valid. This phase will only take one EBI clock period (no EDMA polling required).
• Phase IV: EBI is waiting for the next direct mode request.
When executing a direct mode command the EBI shifts the contents of register EBIDIR
into the external control pins of the SDRAM.
EBIDIR
Reset Value: 0000
H
Bit
Function
ADR_10
Control Bit for Address Pin A10 in Direct Mode
WR_N
Control Bit for Pin WR in Direct Mode
CAS_N
Control Bit for Pin CAS (A15) in Direct Mode
RAS_N
Control Bit for Pin RAS (A14) in Direct Mode
CS_N
Control Bit for Pin CSSDRAM in Direct Mode
CLKEN
Control Bit for Pin CLKEN in Direct Mode
UET11123
EDMR
EDMA
I
II
III
IV
Phase
5
4
3
2
1
0
11
10
9
8
7
6
15
14
13
12
rw
rw
rw
rw
rw
rw
-
-
-
-
-
-
-
-
-
-
RAS
_N
WR
_N
ADR
_10
CS
_N
CLK
EN
CAS
_N
Summary of Contents for SDA 6000
Page 3: ...Contents Overview...
Page 21: ...Pin Description...
Page 22: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Pin Descriptions 2 3 Micronas 2 Pin Descriptions...
Page 29: ...Architectural Overview...
Page 33: ...C16X Microcontroller...
Page 88: ...Interrupt and Trap Function...
Page 122: ...System Control Configuration...
Page 159: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 System Control Configuration 6 40 Micronas...
Page 160: ...Peripherals...
Page 282: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Peripherals 7 124 Micronas...
Page 283: ...Clock System...
Page 284: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Clock System 8 3 Micronas 8 Clock System...
Page 288: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Clock System 8 8 Micronas...
Page 289: ...Sync System...
Page 290: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Sync System 9 3 Micronas 9 Sync System...
Page 301: ...Display Generator...
Page 348: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Display Generator 10 50 Micronas...
Page 349: ...D A Converter...
Page 352: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 D A Converter 11 6 Micronas...
Page 353: ...Slicer and Acquisition...
Page 381: ...Register Overview...
Page 398: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Register Overview 13 20 Micronas...
Page 399: ...Elelctrical Characteristics...
Page 411: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Electrical Characteristics 14 14 Micronas...