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| 型號： | SAA7138 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | The Digital Video Decoder/Encoder Modules(數(shù)字視頻譯碼器/編碼器模塊) |
| 中文描述： | 數(shù)字視頻解碼器/編碼器模塊（數(shù)字視頻譯碼器/編碼器模塊） |
| 文件頁數(shù)： | 13/53頁 |
| 文件大?。?/td> | 456K |
| 代理商： | SAA7138 |
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Module System: 7128MOD2
Philips Semiconductors
13
Application Note
AN 97085
2.4
I2C-Bus
Two I2C-bus slave addresses are selected:
88H: LOW at pin SA
8CH: HIGH at pin SA
Systems running in a 3.3V environment probably require the same voltage for the I2C-bus. In this case, JP29
must be changed from default position to 3.3V in order to adjust the I2C supply voltage. A new Single Master
Interface with the IC 74HC9114D can be used then, it replaces the former Single Master Interface with the IC
74LS05, which is only suited for 5V. The new interface operates on the I2C-bus from 1.8V to 5V.
Please note that there are no additional pullup resistors on this board, thus supply of the I2C-bus is provided once
at the (single master-) I2C-bus interface.
On this backend module, two connectors can be used for I2C-bus control (alternative). The first one is a 6pin Mini
DIN connector with the pinning shown on the right side of Fig.3. In order to consider different existing pinnings,
the STOKO connector has a combined footprint for the standards ’Old’, ’New’ and ’US’. Please note that modules
from the Philips Application Lab. Hamburg use the norm ’NEW’ while the default configuration of the MPC
module system is ’OLD’.
Fig.3 Pinning of I2C-STOKO and Mini-DIN connector
2.5
I2C EEPROM
A DIL 8 socket on each module is provided for adding an EEPROM with I2C interface. It can be used to store data
for initialization and simple control functionality operated by a (future) microcontroller module. Several EEPROM
types can be assembled depending on their memory size (e.g. PCF8582, PCF8594, PCF8598, X24164). Additio-
nally, the I2C-bus device address can be adapted by using the jumper 1..3 (EEP-Adr).
COMBI-FOOTPRINT
VCC
GND
SCL
SDA
SDA
VCC
GND
SCL
VCC
SDA
GND
SCL
NEW
OLD
US
(Top View)
GND
SCL
SDA
GND
VCC
(Solder View)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA7140A | High Performance Scaler HPS |
| SAA7140B | High Performance Scaler HPS |
| SAA7146AHZ | Circular Connector; No. of Contacts:66; Series:MS27472; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:18; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:18-35 RoHS Compliant: No |
| SAA7146AH | .012UF/400VDC METAL POLY CAP |
| SAA7146A | Multimedia bridge, high performance Scaler and PCI circuit SPCI |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7140A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:High Performance Scaler HPS |
| SAA7140B | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:High Performance Scaler HPS |
| SAA7144HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Quadruple video input processor |
| SAA7145 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:PCI Multimedia Bridge |
| SAA7146 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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