PDI1394P23 Datasheet, PDF (10/42 Pages) NXP Semiconductors – 2-port/1-port 400 Mbps physical layer interface

Philips Semiconductors
2-port/1-port 400 Mbps physical layer interface
Preliminary data
PDI1394P23
The LPS input is considered inactive if it remains low for more than
2.6 µs and is considered active otherwise. When the PDI1394P23
detects that LPS is inactive, it will place the PHY-LLC interface into a
low-power reset state in which the CTL and D outputs are held in the
logic zero state and the LREQ input is ignored; however, the
SYSCLK output remains active. If the LPS input remains low for
more than 26 µs, the PHY–LLC interface is put into a low-power
disabled state in which the SYSCLK output is also held inactive. The
PHY-LLC interface is also held in the disabled state during hardware
reset. The PDI1394P23 will continue the necessary repeater
functions required for normal network operation regardless of the
state of the PHY-LLC interface. When the interface is in the reset or
disabled state and LPS is again observed active, the PHY will
initialize the interface and return it to normal operation.
The PHY uses the C/LKON terminal to notify the LLC to power up
and become active. When activated, the C/LKON signal is a square
wave of approximately 163 ns period. The PHY activates the
C/LKON output when the LLC is inactive and a wake-up event
occurs. The LLC is considered inactive when either the LPS input is
inactive, as described above, or the LCtrI bit is cleared to 0. A
wake-up event occurs when a link-on PHY packet addressed to this
node is received, or conditionally when a PHY interrupt occurs. The
PHY deasserts the C/LKON output when the LLC becomes active
(both LPS active and the LCtrl bit set to 1). The PHY also deasserts
the C/LKON output when a bus-reset occurs unless a PHY interrupt
condition exists which would otherwise cause C/LKON to be active.
8.0 ABSOLUTE MAXIMUM RATINGS ¹
In accordance with the Absolute Maximum Rating System (IEC 134). Voltages are referenced to GND (ground = 0 V).
SYMBOL
PARAMETER
CONDITION
LIMITS
MIN
MAX
UNIT
V_DD
V_I
V_I–5V
V_O
DC supply voltage
DC input voltage
5 volt tolerant input voltage range
DC output voltage range at any output
Electrostatic discharge
Human Body Model
Machine Model
–0.5
4.0
V
–0.5
V_DD+0.5
V
–0.5
5.5
V
–0.5
—
V_DD+0.5
V
2
kV
—
200
V
T_amb Operating free-air temperature range
0
+70
°C
T_stg
Storage temperature range
–65
+150
°C
NOTE:
1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating
Conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2001 Sep 06
10