参数资料
型号: ST72774S9T1/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
封装: TQFP-44
文件页数: 7/144页
文件大小: 1280K
代理商: ST72774S9T1/XXX
ST72774/ST727754/ST72734
104/144
DDC INTERFACE (Cont’d)
EDID Data structure mapping: An internal
address pointer defines the memory location being
addressed. It is made of two 8-bit registers AHR
and ALR.
AHR is initialized by software. It defines the 256-
byte
block
within
the
64K
address
space
containing the data structure.
ALR is loaded with the data address sent by the
master after a write Device Address. It defines the
byte within the data structure currently addressed.
ALR is reset upon entry into the DDC2B mode.
One exception to this arrangement is when the
CF[1:0] bits = 10b. In this case the two EDID
versions
must
coexist
at
non-overlapping
addresses. The LSB of AHR is therefore ignored
and automatically set to 1 to address the 128-byte
EDID and set to 0 to address its 256-byte
counterpart (see Figure 64).
Figure 64. Mapping of DDC2B data structure
AHR
ALR
0
7
8
15
Addr Pointer
0000h
FFFFh
128-byte Data
2
56
b
ytes
Structure
0000h
FFFFh
256
byte
s
0000h
FFFFh
ALR
256-byte Data
256
byte
s
Structure
128-byte Data
Structure
A0h/A1h
A2h/A3h + A6h/A7h
0000h
FFFFh
128-byte Data
256
bytes
Structure
0000h
FFFFh
256
bytes
0000h
FFFFh
ALR
256-byte Data
256
b
ytes
Structure
128-byte Data
Structure
A0h/A1h
A2h/A3h
AHR<7:1>
ALR
0
7
8
15
Addr Pointer
9
1
AHR<7:1>
ALR
0
7
8
15
Addr Pointer
9
0
512
AHR<7:1>
*
256
AHR
*
DDC v2 + P&D mode: CF[1:0] bits = 10b
DDC v2 / P&D / FPDI-2 modes: CF[1:0] bits != 10b
Extended EDID v1 (if present)
Basic EDID v1
Extended EDID v1 (if present)
Basic EDID v1
EDID v2
ALR :
80h -> FFh
ALR :
80h -> FFh
ALR :
00h -> 7Fh
ALR :
00h -> 7Fh
相关PDF资料
PDF描述
ST72E734J6D0 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, CDIP42
ST72T774S9T1 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP44
ST7294C6B6 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP28
ST72T94C6M6 8-BIT, OTPROM, MICROCONTROLLER, PDSO28
ST72C171K2B6 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP32
相关代理商/技术参数
参数描述
ST727X4-EMU2B 制造商:STMicroelectronics 功能描述:REALTIME EMULATOR BOARD - Bulk
ST727X4-EPB/US 制造商:STMicroelectronics 功能描述:PROGRAMMER - Bulk
ST-7-28 功能描述:XFRMR PWR 115V 14VAC 2.6A RoHS:是 类别:变压器 >> 功率 系列:ST 标准包装:1 系列:260 类型:标准 最大功率:65 VA 主线圈:双 副线圈:三路,中心抽头 在某电流时的串联输出电压:500 VAC @ 85mA,5 VAC @ 2A,6.3 VAC @ 2A 在某电流时的并联输出电压:- 安装类型:底座安装 尺寸/尺寸:102.36mm L x 67.31mm W 高度 - 座高(最大):66.80mm 端接类型:导线引线
ST7-28 制造商:SUPERWORLD 制造商全称:Superworld Electronics 功能描述:POWER TRANSFORMER
ST7-28B56 功能描述:电源变压器 SPLIT BOBBIN HORZ MOUNT XFMR RoHS:否 制造商:Triad Magnetics 功率额定值:12 VA 初级电压额定值:115 V / 230 V 次级电压额定值:12 V / 24 V 安装风格:SMD/SMT 一次绕组:Dual Primary Winding 二次绕组:Dual Secondary Winding 长度:2.5 in 宽度:2 in 高度:1.062 in