SAA7111 Просмотр технического описания (PDF) - Philips Electronics

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производитель

SAA7111

Video input processor (VIP).

Philips Electronics 

Philips Semiconductors

Video Input Processor (VIP)

Product specification

SAA7111

SYMBOL

PINS

I/O

PLCC68 QFP64

DESCRIPTION

VPO (9 to 0)

53 to 62 42 to 51 O Digital VPO-bus output signal; lower bits of the 16-bit YUV-bus or the

16-bit RGB-bus output signal. The output data rate, the format and

multiplexing schema of the VPO-bus are controlled via I2C-bits

OFTS0 and OFTS1. With I2C-bit VIPB = 1 the digitized input signals

(AD1 [1 and 0] and AD2 [7 to 0]) are connected to these outputs.

FEI

63

52

I Fast enable input signal (active LOW); this signal is used to control

fast switching on the digital YUV-bus. A HIGH at this input forces the

IC to set its Y and UV outputs to the high impedance state; note 4.

GPSW

64

53

O General purpose switch output; the state of this signal is set via

I2C-bus control and the levels are TTL compatible.

XTAL

65

54

O Second output terminal of crystal oscillator; not connected if external

clock signal is used.

XTALI

66

55

I Input terminal for 24.576 MHz crystal oscillator or connection of

external oscillator with CMOS compatible square wave clock signal.

VSS1

VDD1

67

56 GND Digital ground for positive supply voltage 1.

68

57

P Positive digital supply voltage 1 (+5 V).

Notes

1. For board design without boundary scan implementation (pin compatibility with the SAA7110) connect the TRST pin

to ground.

2. This pin provides easy initialization of BST circuit. TRST can be used to force the TAP (Test Access Port) controller

to the Test-Logic-Reset state (normal operation) at once.

3. In accordance with the IEEE1149.1 standard the pads TCK, TDI, TMS and TRST are input pads with an internal

pull-up transistor and TDO a 3-state output pad.

4. All pin names that carry an ‘overscore’ have been renamed due to Philips pin name conventions. In previous data

sheet versions these pins were marked by the suffix ‘N’, e.g. TRST = TRSTN.

1998 May 15

8

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