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AX88852 데이터시트(PDF) 31 Page - ASIX Electronics Corporation

부품명 AX88852
상세설명  100BASE-TX/FX Repeater Controller
PDF  39 Pages
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제조업체  ASIX [ASIX Electronics Corporation]
홈페이지  http://www.asix.com.tw
Logo ASIX - ASIX Electronics Corporation

AX88852 데이터시트(HTML) 31 Page - ASIX Electronics Corporation

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AX88850
PRELIMINARY
ASIX ELECTRONICS CORPORATION
31
4.10 Device ID Register (DEVICEID)
Page 0 Address 5h
Bit
Bit Name
Access
Bit Description
D15-D13
Temp
R/W
Temporary Registers : reserved for system programer used.
D12-D8
PORT_NUM
*R/W Port Number : These bit indicate the last or current receiving port number.
D7
/IR_ACT_EN
*R/W Inter Repeater Active Input Pin Enable : This bit active low to enable
/IR_ACTI[7:0] pin as inter-repeater carrier sense detection input.
Otherwise, /IR_ACTI[7:0] pins is disable and only perform power-on
configuration inputs.
D6
/TO_ID_CLR
R/W
Time Out to Clear repeater ID : Within the time out period, if no daisy
chain repeater ID input. The repeater ID will be clear to RID=0 .
Otherwise, the repeater ID will remain the previous value ( power on
configured value or previous daisy chain reconfigured value).The tome
out period is about 4 to 5 second.
D5
/DIS_DAISY
R/W
Disable RID Daisy-chain Input: No matter what kind of data input from
DAISY_IN pin the RPTR_ID can’t be override.
D4-D0
RPTR_ID
R/W
Repeater ID : At the rising edge of /RST , the value of RID[4:0] are
latched in this register as D[4:0]. The setting of RID[2:0]can be override
according to the data from serial daisy-chain DAISY_IN pin input except
/DIS_DAISY is configured to “low” .
Note that in system application, the maximum of 8 devices can be
cascade. Therefore only RID[2:0] can be variation and the RID[4:3] must
be keep the same value in the same system and avoid conflicted with PHY
device ID.
* Note : Host can’t override these signals.
4.11 Silicon Revision Register
Page 1 Address 5h
Bit
Bit Name
Access
Bit Description
D15-D0
SI_REV[15:0]
RO
Silicon Reversion : Currently reads all 1‘s



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