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CONFIDENTIAL – DO NOT COPY
Page 7-22
File No. SG-0198
4. READING ARRAY DATA
The device is automatically set to reading array data after device power-up. No commands are
required to retrieve data. The device is also ready to read array data after completing an
Automatic Program or Automatic Erase algorithm. After the device accepts an Erase Suspend
command, the device enters the Erase Suspend mode. The system can read array data using the
standard read timings, except that if it reads at an address within erase suspended sectors, the
device outputs status data. After completing a programming operation in the Erase Suspend mode,
the system may once again read array data with the same exception. See Erase Suspend/Erase
Resume Commands” for more information on this mode. The system must issue the reset
command to re-enable the device for reading array data if Q5 goes high, or while in the auto select
mode. See the "Reset Command" section, next.
5. RESET COMMAND
Writing the reset command to the device resets the device to reading array data. Addresses bits
are don't care for this command. The reset command may be written between the sequence
cycles in an erase command sequence before erasing begins. This resets the device to reading
array data. Once erasure begins, however, the device ignores reset commands until the operation
is complete. The reset command may be written between the sequence cycles in a program
command sequence before programming begins. This resets the device to reading array data
(also applies to programming in Erase Suspend mode). Once programming begins, however, the
device ignores reset commands until the operation is complete. The reset command may be
written between the sequence cycles in an SILICON ID READ command sequence. Once in the
SILICON ID READ mode, the reset command must be written to return to reading array data (also
applies to SILICON ID READ during Erase Suspend). If Q5 goes high during a program or erase
operation, writing the reset command returns the device to reading array data (also applies during
Erase Suspend).
WM8776 Application
The WM8776 is a high performance, stereo audio codec with five channel input selector. The
WM8776 is ideal for surround sound processing applications for home hi-fi, DVD-RW and other
audiovisual equipment. Etch ADC channel has programmable gain control with automatic level
control. Digital audio output word lengths from 16-32 bits and sampling rates from 32kHZ to 96KHZ
are supported. The DAC has an input mixer allowing an external analogue signal to be mixed with
the DAC signal. There are also Headphone and line outputs, with control for the headphone
The WM8776 supports fully independent sample rates for the ADC and DAC. The audio data
interface supports I2S, left justified, right justified and DSP formats.