參數(shù)資料
型號(hào)： TSB41AB3IPFPEP
廠商： Texas Instruments
文件頁(yè)數(shù)： 9/55頁(yè)
文件大小： 0K
描述： IC 3PRT CABLE TXRX/ARBIT 80HTQFP
標(biāo)準(zhǔn)包裝： 96
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 6/6
規(guī)程： IEEE 1394
電源電壓： 3 V ~ 3.6 V
安裝類型： 表面貼裝
封裝/外殼： 80-TQFP 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 80-HTQFP（12x12）
包裝： 托盤(pán)
產(chǎn)品目錄頁(yè)面： 882 (CN2011-ZH PDF)
其它名稱： 296-22528
V62/03612-01XE
TSB41AB3EP
IEEE 1394a2000 THREEPORT CABLE TRANSCEIVER/ARBITER
SGLS122C JULY 2002 REVISED JUNE 2008
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
internal register configuration (continued)
Table 2. Base Register Field Descriptions
FIELD
SIZE
TYPE
DESCRIPTION
Physical ID
6
Rd
This field contains the physical address ID of this node determined during self-ID. The physical-ID is invalid
after a bus reset until self-ID has completed as indicated by an unsolicited register-0 status transfer.
R
1
Rd
Root. This bit indicates that this node is the root node. The R bit is reset to 0 by bus reset, and is set to 1 during
tree-ID if this node becomes root.
CPS
1
Rd
Cable-power-status. This bit indicates the state of the CPS input terminal. The CPS terminal is normally tied to
serial bus cable power through a 400-k
resistor. A 0 in this bit indicates that the cable power voltage has
dropped below its threshold for ensured reliable operation.
RHB
1
Rd/Wr
Root-holdoff bit. This bit instructs the PHY to attempt to become root after the next bus reset. The RHB bit is
reset to 0 by a hardware reset is unaffected by a bus reset.
IBR
1
Rd/Wr
Initiate bus reset. This bit instructs the PHY to initiate a long (166
s) bus reset at the next opportunity. Any
receive or transmit operation in progress when this bit is set completes before the bus reset is initiated. The
IBR bit is reset to 0 after a hardware reset or a bus reset.
Gap_Count
6
Rd/Wr
Arbitration gap count. This value is used to set the subaction (fair) gap, arb-reset gap, and arb-delay times.
The gap count can be set either by a write to the register, or by reception or transmission of a PHY_CONFIG
packet. The gap count is reset to 3Fh by hardware reset or after two consecutive bus resets without an
intervening write to the gap count register (either by a write to the PHY register or by a PHY_CONFIG packet).
Extended
3
Rd
Extended register definition. For the TSB41AB3, this field is 111b, indicating that the extended register set is
implemented.
Num_Ports
4
Rd
Number of ports. This field indicates the number of ports implemented in the PHY. For the TSB41AB3 this field
is 3.
PHY_Speed
3
Rd
PHY speed capability. For the TSB41AB3 PHY this field is 010b, indicating S400 speed capability.
Delay
4
Rd
PHY repeater data delay. This field indicates the worst case repeater data delay of the PHY, expressed as
144+(delay
× 20) ns. For the TSB41AB3 this field is 0.
LCtrl
1
Rd/Wr
Link-active status control. This bit is used to control the active status of the LLC as indicated during self-ID.
The logical AND of this bit and the LPS active status is replicated in the L field (bit 9) of the self-ID packet. The
LLC is considered active only if both the LPS input is active and the LCtrl bit is set.
The LCtrl bit provides a software controllable means to indicate the LLC active status in lieu of using the LPS
input.
The LCtrl bit is set to 1 by hardware reset and is unaffected by bus-reset.
NOTE: The state of the PHY-LLC interface is controlled solely by the LPS input, regardless of the state of the
LCtrl bit. If the PHY-LLC interface is operational as determined by the LPS input being active, then received
packets and status information continues to be presented on the interface, and any requests indicated on the
LREQ input is processed, even if the LCtrl bit is cleared to 0.
C
1
Rd/Wr
Contender status. This bit indicates that this node is a contender for the bus or isochronous resource
manager. This bit is replicated in the c field (bit 20) of the self-ID packet. This bit is set to the state specified by
the C/LKON input terminal by a hardware reset and is unaffected by a bus reset.
Jitter
3
Rd
PHY repeater jitter. This field indicates the worst case difference between the fastest and slowest repeater
data delay, expressed as (jitter+1)
× 20 ns. For the TSB41AB3, this field is 0.
Pwr_Class
3
Rd/Wr
Node power class. This field indicates this node power consumption and source characteristics and is
replicated in the pwr field (bits 2123) of the self-ID packet. This field is reset to the state specified by the
PC0PC2 input terminals upon a hardware reset, and is unaffected by a bus reset. See Table 9.
RPIE
1
Rd/Wr
Resuming port interrupt enable. This bit, if set to 1, enables the port event interrupt (PIE) bit to be set
whenever resume operations begin on any port. This bit is reset to 0 by hardware reset and is unaffected by
bus reset.
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