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): 93/104頁
文件大?。?/td> 461K
代理商: TSB82AA2I
55
Table 53. Link Enhancement Register Description (Continued)
7
enab_unfair
RSC
Enable asynchronous priority requests. OHCI-Lynx
compatible. Setting bit 7 to 1 enables the link
to respond to requests with priority arbitration. It is recommended that this bit be set to 1.
6
RSVD
R
This bit is not assigned in the TSB82AA2 follow-on products, since this bit location loaded by the
serial EEPROM from the enhancements field corresponds to bit 23 (programPhyEnable) in the host
controller control register at OHCI offset 50h/54h (see Section 4.16,
Host Controller Control
Register
).
53
RSVD
R
Reserved. Bits 53 return 0s when read.
Enable insert idle. OHCI-Lynx
compatible. When the PHY layer has control of the
PHY_CTL0PHY_CTL1 internal control lines and PHY_DATA0PHY_DATA7 internal data lines and
the link requests control, the PHY layer drives 11b on the PHY_CTL0PHY_CTL1 internal lines. The
link can then start driving these lines immediately. Setting bit 2 to 1 inserts an idle state, so the link
waits one clock cycle before it starts driving the lines (turnaround time).
2
enab_insert_idle
RSC
1
enab_accel
RSC
Enable acceleration enhancements. OHCI-Lynx
compatible. When bit 1 is set to 1, the PHY layer
is notified that the link supports the IEEE Std 1394a-2000 acceleration enhancements, that is,
ack-accelerated, fly-by concatenation, etc. It is recommended that this bit be set to 1.
0
RSVD
R
Reserved. Bit 0 returns 0 when read.
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