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2.3.3 DA registers (addresses 00CE
The DA-H register is assigned to address 00CE
Both registers consist of 8 bits.
The DA-H register is used to set the high-order 8 bits of 14-bit PWM output data. The DA-L register is used
to set the low-order 6 bits of 14-bit PWM output data (set to bits 0 to 5). Bits 7 is not used.
2.3.4 PWM registers (addresses 00D0
The PWM0 to PWM4 registers are assigned to addresses 00D0
address 00F6
. All registers consist of 8 bits.
16
These registers are used to set the output data corresponding to six 8-bit PWM (PWM0–PWM5).
2.3.5 PWM output control registers (addresses 00D5
The PWM output control register 1 is assigned to address 00D5
is assigned to address 00D6
Both registers consist of 8 bits, and used to select the PWM count source etc. The high-order 3 bits and
the low-order 2 bits of the PWM output control register 2 are not used.
2.3.6 Multi-master I
2
C-BUS related registers (addresses 00D7
2
The I
C data shift register, the I
clock control register are assigned to addresses 00D7
All registers consist of 8 bits.
2
The I
C data shift register is a 8-bit shift register to store receive data and write transmit data.
The I
2
C address register consists of a 7-bit slave address and a read/write bit.
The I
2
C status register controls the I
the high-order 4 bits can be read out and written to.
2
The I
C control register controls data communication format.
2
The I
C clock control register is used to set ACK control, SCL mode and SCL frequency.
2.3.7 Serial I/O related registers (addresses 00DC
The serial I/O mode register is assigned to address 00DC
address 00DD
. Both registers consist of 8 bits.
16
The serial I/O mode register is used to select the synchronous clock and the serial I/O port function by its
low-order 4 bits. Bit 5 selects the transfer direction, and bit 6 selects the serial data input pin. Bit 4 is set
to "0." Bit 7 is not used.
The serial I/O register is used to write transfer data.
2.3.8 CRT display related registers (addresses 00E0
(1) Horizontal position register (address 00E0
The horizontal position register is assigned to address 00E0
is used to specify the horizontal position of CRT display. Bits 7 and 6 are not used.
(2) Vertical display position registers (addresses 00E1
The vertical display position register 1 is assigned to address 00E1
register 2 is assigned to address 00E2
used to set the vertical position to start display. Bit 7 of each register is not used.
(3) Character size register (address 00E4
The character size register is assigned to address 00E4
to specify one of the three sizes of display characters. Bits 4 to 7 are not used.
FUNCTIONAL DESCRIPTION
and 00CF
16
16
, and the DA-L register is assigned to address 00CF
16
to 00D4
16
16
.
16
2
C address register, the I
2
C-BUS interface status. The low-order 4 bits are read-only bits and
. These registers are corresponded to blocks 1 and 2, and
16
)
16
7220 Group User's Manual
)
and 00F6
)
16
to 00D4
16
and 00D6
)
16
16
and the PWM output control register 2
16
to 00DB
16
2
C status register, I
, 00D8
, 00D9
, 00DA
16
16
16
and 00DD
)
16
16
and the serial I/O register is assigned to
16
to 00EC
)
16
16
)
16
. This register consists of 8 bits, and
16
and 00E2
16
16
16
. This register consists of 8 bits, and is used
16
2.3 Memory assignment
and PWM5 register is
16
)
16
2
C control register and the I
and 00DB
respectively.
16
16
)
and the vertical display position
.
16
2
C
2-17
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