參數(shù)資料
型號(hào)： TDA5360UK
廠商： NXP SEMICONDUCTORS
元件分類： 光電元器件
英文描述： Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads
中文描述： 12 CHANNEL READ WRITE AMPLIFIER CIRCUIT, UUC75
封裝： DIE-75
文件頁(yè)數(shù)： 14/34頁(yè)
文件大?。?/td> 198K
代理商： TDA5360UK
1998 July 30
Philips Semiconductors
Objective Specification, Revision 2.2
Pre-Amplifier for Hard Disk Drive with
MR-Read / Inductive Write Heads
TDA5360
14
The following are valid READ fault conditions which set FLT=LOW
Rext pin open or shorted to GND or Vcc
Thermal Asperity detected
Read Head open
Power supplies too low (VCC and/or VEE)
Write current present in read mode
Illegal head address ( i.e. head 12, 13, 14 or 15)
In this case, besides asserting the fault flag, the MR bias current is diverted to the dummy head.
The following are valid WRITE fault conditions which set FLT=HIGH. An action can eventually be taken :
FAULT
ACTION
No write current in write mode
Disable write current
Rext pin open or shorted to GND or Vcc
Open write head or shorted to GND
Write data frequency too low
Power supplies too low
lllegal head address (i.e. HD 12, 13, 14, 15)
Disable write current
Do not disable write current
Do not disable write current
Disable write current
Disable write current
If the write current is disabled, the writer is powered down. The only way to restart a write sequence is to switch R/W
high and then to switch R/W low again.
Trying to go in Write mode from a sleep or standby mode condition will disable the write current.
If two fault conditions occurs nearly at the same time, the first to occur will be loaded in Reg. 07.
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