upd72872 Renesas Electronics Corporation., upd72872 Datasheet - Page 15

• Manufacturer Part Number: upd72872
• Description: Ieee1394 1-chip Ohci Host Controller
• Manufacturer: Renesas Electronics Corporation.

Extended
Total_ports
Max_speed
Delay
Link_active
Contender
Jitter
Pwr_class
Resume_int
ISBR
Note
Field
This link is enabled by the link-on PHY packet described in P1394a draft 2.0 [7.5.2]; this packet may also
enable application layers.
Size
3
4
3
4
1
1
3
3
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
Reset value
Description
0010
0010
See
111
010
010
1
0
0
0
Table 2-1. Bit Field Description (2/3)
Data Sheet S14793EJ1V0DS
Shows the extended register map.
Supported port number.
Indicate the maximum speed that this node supports.
Indicate worst case repeating delay time. 144 + (2 x 20) = 184 ns
Link active.
The logical AND status of this bit and LPS.
State will be referred to “L bit” of Self-ID Packet#0.
The LPS is a PHY/Link interface signal and is defined in P1394a draft 2.0. It
is an internal signal in the µ PD72872.
Contender.
to “C bit” of Self-ID Packet#0.
The difference of repeating time (Max.-Min.). (2+1) x 20 = 60 ns
Power class.
Please refer to P1394a draft 2.0 [7.5.1] Table 7-3.
PC0-PC2
This bit will be referred to Pwr field of Self-ID Packet#0.
The reset data will be determined by PC0-PC2 Pin status.
Resume interrupt enable. When set to 1, if any one port does resume, the
Port_event bit becomes 1.
Initiate short (arbitrated) bus reset.
Setting to 1 acquires the bus and begins short bus reset.
Short bus reset signal output : 1.3 µ s
Returns to 0 at the beginning of the bus reset.
“1” indicate this node support bus manager function. This bit will be referred
0010: 2 ports
010: 98.304, 196.608 and 393.216 Mbps
1: Enable
0: Disable
000
001
010
011
100
101
110
111
Node does not need power and does not repeat power.
Node is self-powered and provides a minimum of 15 W to the bus.
Node is self-powered and provides a minimum of 30 W to the bus.
Node is self-powered and provides a minimum of 45 W to the bus.
Node may be powered from the bus and is using up to 3 W.
No additional power is needed to enable the link.
Reserved for future standardization.
Node is powered from the bus and is using up to 3 W.
An additional 3 W is needed to enable the link.
Node is powered from the bus and is using up to 3 W.
An additional 7 W is needed to enable the link.
Description
Description
Note
Note
Note
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