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CXA3541N

Unsafe Condition

1. Write fault condition

FLT is a high level in write fault condition.

• Open write head leads.

• Write head leads shorted to ground.

• WD frequency is too low.

• Power supply is out of tolerance.

2. Read fault condition

FLT is a low level in read fault condition.

• Open short MR head. (This function is set by serial resister.)

Bank Write Control (Refer to Bank "Write current vs. Current accuracy" characteristic curve)

1. Set the read mode.

Ω)

#This operation disables all fault detection.

4. Start the write operation by setting R/XW = L.

5. Terminate the write operation by setting R/XW = H.

i) Allow 50% write duty or less.

ii) Low voltage detector is disabled in the bank write mode and erase mode.

iii) Don't change the serial register data bits in following conditions:

• On entering write data.

BHV (Buffered Head Voltage)

2. Turn BHV on, but turn off MROPN and MRSHT.

Head Condition

1. Short X-Y terminal on un-used write head.

2. Recommended X-Y terminal on un-used read head short.

Polarity

2. Write current flows into X side, when WDX is high and WDY is low.

Head Select Table

(2ch)

HS

0

1

Normal operation

0

1