SAA4995WP/V1 Просмотр технического описания (PDF) - Philips Electronics

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Компоненты Описание

производитель

SAA4995WP/V1

PANorama-IC (PAN-IC)

Philips Electronics 

Philips Semiconductors

PANorama-IC (PAN-IC)

MICROCONTROLLER BUS TIMING (SNERT BUS)

SYMBOL

PARAMETER

Tcy(SNCL)

tsu(i)

th(i)

th(o)(D)

td

SNCL cycle time

input data set-up time

input data hold time

output data hold time

output data delay time

CONDITIONS

see Fig.7

see Fig.7

see Fig.7

see Fig.7

see Fig.7

Preliminary specification

SAA4995WP

MIN.

1

90

50

0

−

MAX. UNIT

−

µs

−

ns

−

ns

−

ns

700 ns

handbook, full pagewidth

SNCL

SNDA

(receiver

mode)

SNDA

(transmitter

mode)

Tcy(SNCL)

tsu(i)

th(i)

LSB

td

data

valid

data

valid

data

valid

data

valid

th(o)(D)

data

valid

MGK181

Fig.7 SNERT bus interface timing.

MICROCONTROLLER BUS CONTROL (SNERT BUS)

The following control table applies (Table 5), for control via the microcontroller bus (SNERT bus, consisting of SNCL,

SNDA and VRST signals). Data communication is by writing to the PAN-IC (address 40H to 48H) and reading from it

(address 49H)

Table 5 SNERT-bus control

ADDRESS

(HEX)

FUNCTION

# OF BITS

BIT

POSITION

REMARKS

40

X1l

8

7 : 0 definition of X1l with a resolution of 4 samples; see Fig.3 and

note 1

41

X0l

8

7 : 0 definition of X0l with a resolution of 4 samples; see Fig.3 and

note 1

42

X0r

8

7 : 0 definition of X0r with a resolution of 4 samples; see Fig.3 and

note 1

43

X1r

8

7 : 0 definition of X1r with a resolution of 4 samples; see Fig.3 and

note 1

44

output samples

8

per line

7 : 0 resolution of 4 luminance samples; actual #

samples = (programmed # samples + 1) × 4; note 2

1997 Jun 10

11

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