参数资料
型号: M34552M8H-XXXFP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48
封装: 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48
文件页数: 7/143页
文件大小: 0K
代理商: M34552M8H-XXXFP
8: REGISTERS
1-92
EPSON
S1D13505F00A HARDWARE FUNCTIONAL
SPECIFICATION (X23A-A-001-12)
Miscellaneous Registers
bit 7
Host Interface Disable
This bit is set to 1 during power-on/reset.
This bit must be programmed to 0 to enable the Host Interface. When this bit is high, all
memory and all registers except REG[1Ah] (read-only) and REG[1Bh] are inaccessible.
bit 0
Half Frame Buffer Disable
This bit is used to disable the Half Frame Buffer.
When this bit = 1, the Half Frame Buffer is disabled.
When this bit = 0, the Half Frame Buffer is enabled.
When a single panel is selected, the Half Frame Buffer is automatically disabled and this
bit has no effect.
The half frame buffer is needed to fully support dual panels. Disabling the Half Frame
Buffer reduces memory bandwidth requirements and increases the supportable pixel
clock frequency, but results in reduced contrast on the LCD panel (the duty cycle of the
LCD is halved). This mode is not normally used except under special circumstances such
as simultaneous display on a CRT and dual panel LCD. When this mode is used the Alter-
nate Frame Rate Modulation scheme should be used (see REG[31h]). For details on
Frame Rate calculation see Section 14.2, “Frame Rate Calculation”.
REG[1Ch] bits 7–0
MD[15:0] Conguration Status
REG[1Dh] bits 7–0
These are read-only status bits for the MD[15:0] pins conguration status at
the rising edge of RESET#. MD[15:0] are used to congure the chip at the
rising edge of RESET# – see “Pin Descriptions and Summary of Congura-
tion Options” for details.
Miscellaneous Disable Register
REG[1Bh]
RW
Host Interface
Disable
n/a
Half Frame
Buffer Disable
MD Configuration Readback Register 0
REG[1Ch]
RO
MD[7] Status
MD[6] Status
MD[5] Status
MD[4] Status
MD[3] Status
MD[2] Status
MD[1] Status
MD[0] Status
MD Configuration Readback Register 1
REG[1Dh]
RO
MD[15] Status MD[14] Status MD[13] Status MD[12] Status MD[11] Status MD[10] Status
MD[9] Status
MD[8] Status
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