AD9545 datasheet(142/157 Pages) AD

142 / 157 page

AD9545

Data Sheet

Rev. A | Page 142 of 157

Table 62. EEPROM Controller Instruction Set Summary

Instruction Code (Hexadecimal)

Response

Comments

0x00 to 0x7F

Requires a 2-byte register address suffix

0x80

Input/output update

Assert input/output update during download

0x81 to 0x8F

Not applicable

Undefined

0x90

Calibrate APLLs

Calibrate the system clock PLL, APLL0, and APLL1 during download

0x91

Calibrate the system clock PLL

Calibrate only the system clock PLL during download

0x92

Calibrate APLL0

Calibrate only APLL0 during download

0x93

Calibrate APLL1

Calibrate only APLL1 during download

0x94 to 0x97

Not applicable

Reserved/unused

0x98

Force freerun

Force DPLL0 and DPLL1 to freerun during download

0x99

Force DPLL0 freerun

Force only DPLL0 to freerun during download

0x9A

Force DPLL1 freerun

Force only DPLL1 to freerun during download

0x9B to 0x9F

Not applicable

Reserved/unused

0xA0

Synchronize outputs

Synchronize all distribution outputs during download

0xA1

Synchronize Channel 0

Synchronize only Channel 0 distribution outputs during download

0xA2

Synchronize Channel 1

Synchronize only Channel 1 distribution outputs during download

0xA3 to 0xAF

Not applicable

Reserved/unused

0xB0

Clear condition

Apply Condition 0 and reset the condition map

0xB1 to 0xBF

Set condition

Apply Condition 1 to Condition 15, respectively

0xC0 to 0xFD

Not applicable

Undefined

0xFE

Pause

Pause the EEPROM upload sequence

0xFF

End of data

Marks the end of the instruction sequence

Conditional Instructions (0xB0 to 0xBF)

The conditional instructions allow conditional execution of

EEPROM instructions during a download sequence. During an

upload sequence, however, they are stored as is and have no

effect on the upload process.

Conditional processing makes use of four elements:

•

The conditional instruction.

•

The condition value.

•

The condition ID.

•

The condition map.

Conditional Instruction

When the EEPROM controller encounters a conditional

instruction during an upload sequence, it stores the instruction

in the EEPROM. When the EEPROM controller detects a

conditional instruction during a download sequence, it affects

the condition map as well as the outcome of conditional processing.

Condition Value

The condition value has a one to one correspondence to the

conditional instruction. Specifically, the condition value is the

value of the conditional instruction minus 0xB0. Therefore,

condition values have a range of 0 to 15. The EEPROM controller

uses condition values in conjunction with the condition map,

while the user uses a condition value to populate the EEPROM

load condition bit field of the register map with a condition ID.

Condition ID

The condition ID is the value stored in the 4-bit EEPROM load

condition bit field in the EEPROM section of the register map.

The EEPROM controller uses the condition ID in conjunction

with the condition map to determine which instructions to

execute or ignore during a download sequence.

Condition Map

The condition map is a table maintained by the EEPROM

controller consisting of a list of condition values. When the

EEPROM controller encounters a conditional instruction

during a download sequence, it determines the corresponding

condition value of the instruction (0 to 15). If the condition

value is nonzero, the EEPROM controller places the condition

value in the condition map. Conversely, if the condition value

is zero, the controller clears the condition map and applies

Condition 0. Condition 0 causes all subsequent instructions to

execute unconditionally (until the controller encounters a new

conditional instruction that causes conditional processing).

Conditional Processing

While executing a download sequence, the EEPROM controller

executes or skips instructions depending on the condition ID

and the contents of the condition map (except for the condi-

tional and end of data instructions, which always execute

unconditionally).

If the condition map is empty or the condition ID is zero, all

instructions execute unconditionally during download.

However, if the condition ID is nonzero and the condition map

contains a condition value matching the condition ID, the

EEPROM controller executes the subsequent instructions.

Alternatively, if the condition ID is nonzero but the condition

AD9545 Datasheet(PDF) 142 Page - Analog Devices

AD9545 Datasheet(HTML) 142 Page - Analog Devices

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

Link URL