upd72872 Renesas Electronics Corporation., upd72872 Datasheet - Page 30

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

4. PHY FUNCTION
4.1 Cable Interface
4.1.1 Connections
30
C o m m o n M o d e C o m p a r a t o r s
C o m m o n M o d e C o m p a r a t o r
Connection Detection Comparator
Arbitration Comparators
Arbitration Comparators
C o m m o n M o d e S p e e d C u r r e n t D r i v e r
Connection Detection Current
Receiver
Receiver
Driver
+
-
Driver
+
+
+
+
+
-
-
-
-
-
+
+
+
+
-
-
-
-
270 pF
1 µ F
7 kΩ
7 kΩ
7 kΩ
T p A p
T p A n
T p B p
7 kΩ
T p B n
T p B i a s
Figure 4-1. Cable Interface
Data Sheet S14793EJ1V0DS
56 Ω
56 Ω
56 Ω
56 Ω
5.1 kΩ
0.01 µ F
0.01 µ F
5.1 kΩ
56 Ω
56 Ω
56 Ω
56 Ω
T p B i a s
T p A n
T p B n
T p A p
T p B p
7 kΩ
7 kΩ
7 kΩ
7 kΩ
1 µ F
270 pF
Common Mode Speed Current driver
Connection Detection Current
Connection Detection Comparator
C o m m o n M o d e C o m p a r a t o r
Receiver
Arbitration Comparators
Arbitration Comparators
Driver
+
+
+
+
+
+
+
+
+
-
-
-
-
Receiver
-
-
-
-
-
C o m m o n M o d e C o m p a r a t o r s
Driver
+
-