參數(shù)資料
型號: TSB82AA2I
廠商: Texas Instruments, Inc.
英文描述: 1394b OHCI-LYNX CONTROLLER
中文描述: 的1394b OHCI的山貓控制器
文件頁數(shù): 20/104頁
文件大小: 461K
代理商: TSB82AA2I
28
Table 27. PHY-Link Interface Terminals
TERMINAL
I/O
DESCRIPTION
NAME
NO.
PHY_CTL1
PHY_CTL0
133
134
I/O
PHY-link interface control. These bidirectional control bus signals indicate the phase of operation of the
PHY-link interface. Upon a reset of the interface, this bus is driven by the PHY. When driven by the PHY,
information on PHY_CTL0 and PHY_CTL1 is synchronous to PHY_PCLK. When driven by the link, information
on PHY_CTL0 and PHY_CTL1 is synchronous to PHY_LCLK.
PHY_D7
PHY_D6
PHY_D5
PHY_D4
PHY_D3
PHY_D2
PHY_D1
PHY_D0
123
124
125
128
129
130
131
132
I/O
PHY-link interface data. These bidirectional data bus signals carry 1394 packet data, packet speed, and grant
type information between the PHY and the link. Upon a reset of the interface, this bus is driven by the PHY. When
driven by the PHY, information on PHY_D7 through PHY_D0 is synchronous to PHY_PCLK. When driven by
the link, information on PHY_D7 through PHY_D0 is synchronous to PHY_LCLK.
PHY_LINKON
142
I/O
Link-on notification. PHY_LINKON is an input to the TSB82AA2 device from the PHY that is used to provide
notification that a link-on packet has been received, or, if the PHY is configured properly, an event such as a
port connection has occurred. This input only has meaning when LPS is disabled. This includes the D0
(uninitialized), D2, and D3 power states. If PHY_LINKON becomes active in the D0 (uninitialized), D2, or D3
power state, then the TSB82AA2 device sets bit 15 (PME_STS) in the power management control and status
register in the PCI configuration space at offset 48h (see Section 3.20,
Power Management Control and Status
Register
).
PHY_LPS
144
I/O
Link power status. PHY_LPS is an output from the TSB82AA2 device that, when active, indicates that the link
is powered and capable of maintaining communications over the PHY-link interface. When this signal is
inactive, it indicates that the link is not powered or that the link has not been initialized by software. This signal
is active when bit 19 (LPS) in the host controller control register at OHCI offset 50h/54h (see Section 4.16,
Host
Controller Control Register
) has been set by software according to the initialization as specified in the
1394
Open Host Controller Interface
specification. When active, the signal is nominally a 2-MHz pulse.
PHY_LREQ
141
O
Link request. PHY_LREQ is a serial output from the TSB82AA2 device to the PHY used to request packet
transmissions, read and write PHY registers, and to indicate the occurrence of certain link events that are
relevant to the PHY. Information encoded on PHY_LREQ is synchronous to PHY_LCLK.
PHY_LCLK
136
O
Link clock. PHY_LCLK is an output from the TSB82AA2 device that is generated from the incoming PHY_PCLK
signal. PHY_LCLK is freqency-locked to PHY_PCLK and synchronizes data and information generated by the
link.
PHY_PCLK
138
I
PHY clock. PHY_PCLK is an input to the TSB82AA2 device from the PHY that, when active, provides a nominal
98.304-MHz clock with a nominal 50% duty cycle.
PHY_PINT
143
I
PHY interrupt. PHY_PINT is a serial input to the TSB82AA2 device from the PHY that is used to transfer status,
register, interrupt, and other information to the link. Information encoded on PHY_PINT is synchronous to
PHY_PCLK.
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