Vizio VX37L HDTV10A Service Manual page 61

SOFTWARE COMMAND DEFINITIONS :
Device operations are selected by writing specific address and data sequences into the
command register. Writing incorrect address and data values or writing them in the
improper sequence will reset the device to the read mode. Table 3 defines the valid
register command sequences. Note that the Erase Suspend (B0H) and Erase Resume
(30H) commands are valid only while the Sector Erase operation is in progress. Either of
the two reset command sequences will reset the device (whenapplicable).
All addresses are latched on the falling edge of WE or CE, whichever happens later. All
data are latched on rising edge of WE or CE, whichever happens first.
WRITE OPERATION STATUS
The device provides several bits to determine the status of a write operation: Q2, Q3, Q5,
Q6, Q7, and RY/BY.Table B and the following subsections describe the functions of these
bits. Q7, RY/BY, and Q6 each offer a method for determining whether a program or erase
operation is complete or in progress. These three bits are discussed first.
Table B. Write Operation Status
Notes:
1.Performing successive read operations from the erase-suspended sector will cause Q2
to toggle.
2.Performing successive read operations from any address will cause Q6 to toggle.
3.Reading the byte/word address being programmed while in the erase-suspend program
mode will indicate logic "1" at the Q2 bit.
However, successive reads from the erase-suspended sector will cause Q2 to toggle.
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File No. SG-0209