Philips Semiconductors
Preliminary data
1-port 400 Mbps physical layer interface
PDI1394P25
10.0 CABLE DRIVER
LIMITS
UNIT
SYMBOL
PARAMETER
Differential output voltage
Driver Difference current, TPA+, TPA–, TPB+, TPB–
TEST CONDITION
56 Ω load
MIN
TYP
MAX
V
OD
172
—
265
mV
mA
Drivers enabled,
speed signaling OFF
1
I
–0.88
—
0.88
O(diff)
200 Mbps speed signaling enabled
400 Mbps speed signaling enabled
Drivers disabled
–4.84
–12.4
—
—
—
—
–2.53
–8.10
20
mA
mA
mV
Common mode speed signaling output current, TPB+,
TPB–
I
SP
2
V
OFF
OFF state differential voltage
NOTES:
1. Limits defined as algebraic sum of TPA+ and TPA– driver currents. Limits also apply to TPB+ and TPB– algebraic sum of driver currents.
2. Limits defined as one half of the algebraic sum of currents flowing out of TPB+ and TPB–.
11.0 CABLE RECEIVER
LIMITS
SYMBOL
PARAMETER
TEST CONDITION
UNIT
MIN
10
TYP
14
—
MAX
—
kΩ
pF
kΩ
pF
mV
V
Z
Z
Differential input impedance
Drivers disabled
ID
—
4
20
—
—
Common mode input impedance
Receiver input threshold voltage
Drivers disabled
Drivers disabled
IC
—
—
24
30
1.0
V
TH-R
–30
0.6
—
V
TH-CB
Cable bias detect threshold, TPBn cable inputs Drivers disabled
—
Positive arbitration comparator input threshold
V
Drivers disabled
voltage
89
–168
49
—
—
—
168
–89
131
mV
mV
mV
TH+
Negative arbitration comparator input threshold
V
Drivers disabled
voltage
TH–
TPBIAS–TPA common mode voltage,
drivers disabled 200 Mbps
V
V
Speed signal input threshold
TH–SP200
TPBIAS–TPA common mode voltage,
drivers disabled 400 Mbps
Speed signal input threshold
314
—
—
—
396
–76
mV
TH–SP400
I
Connect detect output at TPBIAS pins
Drivers disabled
µA
CD
12
2001 Sep 06
NXP [ NXP ]
