SAA7144 NXP Semiconductors, SAA7144 Datasheet - Page 22

• Manufacturer Part Number: SAA7144
• Manufacturer: NXP Semiconductors

Specifications of SAA7144

• Package Type: LQFP
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
9397 750 14454
Product data sheet
Table 5:
Internal power-on control sequence Pin output status
Directly after power-on asynchronous
reset
Synchronous reset sequence
Status after power-on control
sequence
Fig 19. Power-on control circuit.
(internal reset)
RESINT
LLCINT
RES_N
XTALO
supply
POC = Power-on control.
XTALO = crystal oscillator output.
LLCINT = internal system clock.
RESINT = internal reset.
LLC = line-locked clock output.
RES_N = delayed internal reset.
LLC
Power-on control sequence
Rev. 01 — 21 April 2005
some ms
CLOCK
PLL
LLC
VPO7 to VPO0,
SDA and LLC are in
high-impedance state
LLC and SDA become
active; VPO7 to VPO0, are
held in high-impedance
state
VPO7 to VPO0, are held in
high-impedance state
20 s to 200 s
POC V
ANALOG
PLL-delay
LOGIC
POC
DDA0
RESINT
1 ms
POC V
DIGITAL
DELAY
CLK0
POC
digital delay
896 LLC
Quadruple video input processor
DD
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
RES_N
Remarks
direct switching to
high-impedance for
20 ms to 200 ms
internal reset sequence
after power-on (reset
sequence) a complete
I
required
SAA7144HL
2
128 LLC
C-bus transmission is
001aab312
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