dp83251 National Semiconductor Corporation, dp83251 Datasheet - Page 50
dp83251
Manufacturer Part Number
dp83251
Description
Player Device Fddi Physical Layer Controller
Manufacturer
National Semiconductor Corporation
Datasheet
1.DP83251.pdf
(96 pages)
- Current page: 50 of 96
- Download datasheet (635Kb)
5 0 Registers
CURRENT INJECTION COUNT REGISTER (CIJCR)
The Current Injection Count Register takes a snap-shot of the Injection Counter during every Control Bus Interface read-cycle of
this register
During a Control Bus Interface write-cycle the PLAYER device will set the Control Bus Write Command Reject bit (CCR) of the
Interrupt Condition Register (ICR) to 1 and will ignore a write-cycle
The Injection Counter is an 8-bit down-counter which decrements every 80 ns
The counter is active only during One Shot or Periodic Injection Modes (i e Injection Control
Current Transmit State Register (CTSR) are set to either 01 or 10)
The Injection Threshold Register (IJTR) value is loaded into the Injection Counter when the counter reaches zero and during
every Control Bus Interface write-cycle of IJTR
The counter is initialized to 0 during the reset process (i e RST
ACCESS RULES
D0
D1 – 6
D7
D7
IJC7
ADDRESS
Bit
19h
D6
IJC6
(Continued)
IJC0
IJC1 – 6
IJC7
READ
Always
Symbol
D5
IJC5
WRITE
Write Reject
D4
IJC4
INJECTION COUNT BIT
of the Injection Counter
INJECTION COUNT BIT
value of the Injection Counter
INJECTION COUNT BIT
value of the Injection Counter
D3
IJC3
50
e
GND)
D2
IJC2
k
k
k
0
1 – 6
7
l
l
l
Least significant bit (LSB) of the current value
Most significant bit (MSB) of the current
Description
Intermediate bits representing the current
D1
IJC1
k
D0
IJC0
1 0
l
bits (IC
k
1 0
l
) of the
Related parts for dp83251
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Freescale Semiconductor Technical Data
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Self-calibrating 12-bit Plus Sign Serial I/o A/d Converters With Mux And Sample/hold
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Pllatinum Tm Fractional N Rf / Integer N If Dual Low Power Frequency Synthesizer
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Pllatinum? 2.0 Ghz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Pllatinumtm 160 Mhz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Dual N-channel Enhancement Mode Field Effect Transistor
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Video Amplifier System (obsolete)
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Synchronous Step-up DC/DC Converter For White Led Applications
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
CLC420 - High Speed, Voltage Feedback op Amp, Package: Lcc, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Monolithic Triple 4.5 CRT Driver
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Differential Video Amplifier
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
ADC10061 - 10-Bit 600 NS A/D Converter With Input Multiplexer And Sample/Hold, Package: Soic Wide, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
DS36277 - Dominant Mode Multipoint Transceiver, Package: Soic Narrow, Pin Nb=8
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Printer Solenoid Driver
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Quad High Speed Trapezoidal Bus Transceiver
Manufacturer:
National Semiconductor Corporation
Datasheet: