IDT 89HPES16NT2, User Manual

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IDT Transparent Mode Operation
PES16NT2 User Manual 9 - 35 April 15, 2008
Notes
PA_EEPROMINTF - Serial EEPROM Interface (0x0B4)
1.
The MSMBCLK low minimum pulse width is equal to half the period programmed in this field. The value of 0x53, which corre-
sponds to~373 KHz, allows the min low pulse width to be satisfied. In systems where this timing parameter is not critical, the op-
erating frequency may be increased.
Bit
Field
Field
Name
Type
Default
Value
Description
15:0 ADDR RW 0x0 EEPROM Address. This field contains the byte address in
the Serial EEPROM to be read or written.
23:16 DATA RW 0x0 EEPROM Data. A write to this field will initiates a serial
EEPROM read or write operation, as selected by the OP
field, to the address specified in the ADDR field.
When a write operation is selected, the value written to this
field is the value written to the serial EEPROM. When a
read operation is selected, the value written to this field is
ignored and the value read from the serial EEPROM may
be read from this field when the DONE bit is set.
24 BUSY RO 0x0 EEPROM Busy. This bit is set when a serial EEPROM
read or write operation is in progress.
0x0 - (idle) serial EEPROM interface idle
0x1 - (busy) serial EEPROM interface operation in
progress
25 DONE RW1C 0x0 EEPROM Operation Completed. This bit is set when a
serial EEPROM operation has completed.
0x0 - (notdone) interface is idle or operation in progress
0x1 - (done) operation completed
26 OP RW 0x0 EEPROM Operation Select. This field selects the type of
EEPROM operation to be performed when the DATA field
is written
0x0 - (write) serial EEPROM write
0x1 - (read) serial EEPROM read
31:27 Reserved RO 0x0 Reserved field.