s1r72805 Epson Electronics America, Inc., s1r72805 Datasheet - Page 4

• Manufacturer Part Number: s1r72805
• Description: Ieee1394 Link/transaction Usb1.1 Controller
• Manufacturer: Epson Electronics America, Inc.

S1R72805
Control signals with “X” prefixed to pin names are low active.
Relation to IEEE1394 PHY Interface (18)
Relation to USB1.1 Interface (5)
Relation to IDE Interface (29) All inputs are of 5V tolerance.
4
Pin No.
37
38
39
40
42
43
44
45
47
48
57
34
33
49
53
35
55
65
66
63
61
60
90
88
85
83
80
78
74
72
71
73
77
79
82
84
87
89
92
93
94
PIN DESCRIPTION
D7
D6
D5
D4
D3
D2
D1
D0
CTL1
CTL0
LREQ
LPS
LINKON
BHEN
CNA
PD
SCLK
DM
DP
XPUENB
OSCIN
OSCOUT
HDD15
HDD14
HDD13
HDD12
HDD11
HDD10
HDD9
HDD8
HDD7
HDD6
HDD5
HDD4
HDD3
HDD2
HDD1
HDD0
HDMARQ
XHIOW
XHIOR
Signal
Ood
Is/O
Is/O
Is/O
Is/O
Is/O
I/O
I/O
I/O
O
O
O
Is
Is
Is
O
Is
I
Reset
HIGH Link power status signal to PHY
LOW Request signal to PHY
LOW Power Down Enable
HI-Z Data bus with PHY
HI-Z Control signal with PHY
HI-Z USB data port
HI-Z The pull-up resistance control pin EnpullUp bit of the
HI-Z IDE data bus
HI-Z IDE DMA Request Signal
HI-Z IDE Write Signal
HI-Z IDE Read Signal
-
-
-
-
-
-
(MSB)
(LSB)
Link on signal from PHY
Bus holder enable signal. At the time of DC
connection, set this to the LOW level. At the time of
single capacitor AC connection, set this to the HIGH
level.
Cable Not Active
Clock signal (49.152MHz) from PHY
USB data port
Arrange the configuration so as to pull up to 3.3V with
an external resistance of 1.5kΩ.
A register control is possible by using the pin
“XPUENB.”
pin “DP” becomes LOW at the time of HIGH.
Crystal oscillation input pin
Clock output pin
(MSB)
(LSB)
Functional description
EPSON
Conformance to USB
Drive capability 6mA
Drive capability 6mA
Drive capability 6mA
Drive capability 6mA
Drive capability 6mA
Drive capability 6mA
Drive capability 2mA
Drive capability 6mA
Drive capability 2mA
Drive capability 2mA
Schmitt input
Schmitt input
Schmitt input
Schmitt input
Schmitt input
Schmitt input
(bus holder)
(bus holder)
(bus holder)
(bus holder)
(bus holder)
Remarks
standard
48.0MHz
48.0MHz
Rev.1.0