PNX1301 PHILIPS [NXP Semiconductors], PNX1301 Datasheet - Page 277
PNX1301
Manufacturer Part Number
PNX1301
Description
Media Processors
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.PNX1301.pdf
(548 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PNX1301EH
Manufacturer:
MARVELL
Quantity:
335
Company:
Part Number:
PNX1301EH,557
Manufacturer:
NXP Semiconductors
Quantity:
10 000
Part Number:
PNX1301EH/G(ROHS)
Manufacturer:
PHILIPS/飞利浦
Quantity:
20 000
- Current page: 277 of 548
- Download datasheet (6Mb)
Philips Semiconductors
Figure 20-4
which double weight is given to requester A.
Figure 20-5. Arbitration architecture
Figure 20-4. State diagram of round robin arbitra-
tor with 3 requesters; A has double weight.
L1 arbitration
Cache priority-based arbitration
ic_req
1/2/3
A1
C
1
dc_req
A
shows a state machine with 3 requesters in
L2 arbitration
dc_mmio_req
vo_req
1/3/5
A&~B
1
B&~A
1
B
L3 arbitration
dc_req_pref
A&~C
C
icp_reqh
icp_reql
1/3/5/7
C&~A
1
1/2/3
A
L4 arbitration
vi_req
A2
1/3/5/7
B
1/2
pci_mmio_req
pci_req
L5 arbitration
1/3/5
1/3/5
vld_req
Such state machines can become very complex and
cannot be implemented for a large system like PNX1300
with 9 requesters. Hierarchy or arbitration levels are
used to overcome this problem.
20.3.2
The arbitration is split into multiple levels of hierarchy.
Each level of hierarchy has an independent arbitration
state machine. At the bottom of the hierarchy, the arbitra-
tion is performed between a group of units. Whichever of
these units ‘wins’ is passed to the next level of hierarchy,
where the selected unit competes with other units at that
level for highway access.This is continued until the high-
est level of arbitration.
By splitting arbitration into multiple levels it is easy to
support a large number of highway units while the com-
plexity of the arbitration state machines at each level of
hierarchy remains modest.
PRELIMINARY SPECIFICATION
L6 arbitration
2
1/3/5
ai_req ao_req
Arbitration Levels
1
bti_mmio_req
1
1/2
bti_req
1
dvdd_req
1
spdo_req
1
Arbiter
20-3
Related parts for PNX1301
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
General purpose CMOS timer
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 16-byte FIFOs
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
Voltage regulator diodes
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
XA 16-bit microcontroller family 32K/512 OTP/ROM/ROMless, watchdog, 2 UARTs
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5 V, 3.3 V and 2.5 V UART with 32-byte FIFOs and infrared (IrDA) encoder/decoder
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5V, 3.3 V and 2.5V dual UART, 5 Mbit/s (max.),with 32-byte FIFOs and infrared(IrDA) encoder/decoder
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.), with 64-byte FIFOs and infrared (IrDA) encoder/decoder
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
Single UART with I2C-bus/SPI interface, 64 bytes of transmit and receive FIFOs, IrDA SIR built-in support
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
Master I-2C - bus controller with UART interface
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
BTL stereo Class-D audio amplifier with I2S input
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
3.4 W PDM input class-D audio amplifier
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
TRIODE FOR USE AS GROUNDED GRID U.H.F. AMPLIFIER
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
Specific Thales (NXP : BLA0912-250,112)
Manufacturer:
Philips Semiconductors
Part Number:
Description:
Specific Thales (NXP : MX0912B251Y,114)
Manufacturer:
Philips Semiconductors