Texas Instruments EMIF16 Manuals

Manuals and User Guides for Texas Instruments EMIF16. We have 1 Texas Instruments EMIF16 manual available for free PDF download: User Manual

Texas Instruments EMIF16 User Manual (63 pages)

External Memory Interface

Brand: Texas Instruments | Category: Recording Equipment | Size: 0.69 MB

Release History
2
Table of Contents
3
List of Tables
5
Ø-VII
7
About this Manual
7
Notational Conventions
7
Related Documentation from Texas Instruments
8
Trademarks
8
Introduction
9
Purpose of the Peripheral
10
Features
10
Architecture
11
EMIF16 Signal Descriptions
12
Basic Block Diagram for EMIF16
12
Memory Organization
13
Supported Modes
13
Configuring the EMIF16 for Asynchronous Access
13
ASRAM/NOR Flash Interface
14
Connecting to 16-Bit ASRAM (See Note Below)
14
EMIF16 Signal Description - ASRAM/NOR Flash
15
Figure
15
Connecting to 8-Bit ASRAM
15
Programmable EMIF16 Parameters
16
EMIF16 Truth Table
16
Switching Waveforms
17
Asynchronous Reads
17
Asynchronous Writes
18
Asynchronous Read Timing Diagram
18
Select Strobe Mode
19
Asynchronous Write Timing Diagram
19
Asynchronous Reads in SS Mode
20
Asynchronous Writes in SS Mode
21
Figure 2-6 Asynchronous Read Cycle (Select Strobe Mode)
21
WE Strobe Mode
22
Write Cycle (Select Strobe Mode)
22
Asynchronous Writes (WE Strobe Mode)
23
Asynchronous Reads (WE Strobe Mode)
23
Operating Modes
25
NAND Flash Mode
26
Connecting to NAND Flash
26
Connecting to 8-Bit NAND Flash
26
Connecting to 16-Bit NAND Flash
26
Configuring EMIF16 in NAND Flash Mode
27
EMIF16 Signal Description - NAND Flash
27
Using ALE and CLE
28
NAND Read and Program Operations
28
Checking the Status of Operation
29
ECC Support
29
Figure
29
1-Bit ECC Calculation for 8-Bit NAND Device
29
Extended Wait Mode
33
Data Bus Parking
33
Interrupt Support
33
NOR Flash
34
Reset Considerations
34
Registers
35
Async Wait Cycle Config Register
35
Async 1 Config Register (A1CR)
35
Interrupt Raw Register (IRR)
35
Interrupt Masked Register (IMR)
35
Registers Overview
36
Revision Code and Status Register (RCSR)
37
Revision Code and Status Register
37
Figure
37
Async Wait Cycle Config Register (AWCCR)
38
Async 1 Config Register (A1CR)
40
Async 2 Config Register (A2CR)
41
Async 3 Config Register (A3CR)
41
Async 4 Config Register (A4CR)
41
Interrupt Raw Register (IRR)
42
Interrupt Masked Register (IMR)
43
Interrupt Mask Set Register (IMSR)
44
Interrupt Mask Clear Register (IMCR)
45
Figure
45
NAND Flash Control Register (NANDFCR)
46
Figure
46
NAND Flash Status Register (NANDFSR)
48
Page Mode Control Register (PMCR)
49
Figure
49
NAND Flash CS2 (CE0) 1-Bit ECC Register (NFECCCS2R)
51
Figure 4-11 NAND Flash CS2 (CE0) 1-Bit ECC Register (NFECCCS2R)
51
NAND Flash CS3 (CE1) 1-Bit ECC Register (NFECCCS3R)
52
NAND Flash CS4 (CE2) 1-Bit ECC Register (NFECCCS4R)
52
NAND Flash CS5 (CE3) 1-Bit ECC Register (NFECCCS5R)
52
NAND Flash 4-Bit ECC Load Register (NANDF4BECCLR)
52
Figure 4-12 NAND Flash 4-Bit ECC Load Register (NANDF4BECCLR)
52
NAND Flash 4-Bit ECC 1 Register (NANDF4BECC1R)
53
Figure 4-13 NAND Flash 4-Bit ECC 1 Register (NANDF4BECC1R)
53
NAND Flash 4-Bit ECC 2 Register (NANDF4BECC2R)
54
Figure 4-14 NAND Flash 4-Bit ECC 2 Register (NANDF4BECC2R)
54
NAND Flash 4-Bit ECC 3 Register (NANDF4BECC3R)
55
Figure 4-15 NAND Flash 4-Bit ECC 3 Register (NANDF4BECC3R)
55
NAND Flash 4-Bit ECC 4 Register (NANDF4BECC4R)
56
Figure 4-16 NAND Flash 4-Bit ECC 4 Register (NANDF4BECC4R)
56
NAND Flash Error Address 1 Register (NANDFEA1R)
57
Figure 4-17 NAND Flash Error Address 1 Register (NANDFEA1R)
57
NAND Flash Error Address 2 Register (NANDFEA2R)
58
Figure 4-18 NAND Flash Error Address 2 Register (NANDFEA2R)
58
NAND Flash Error Value 1 Register (NANDFEV1R)
59
NAND Flash Error Value 2 Register (NANDFEV2R)
60

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