7220 datasheet(257/303 Pages) RENESAS

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APPENDIX

6.7 Control registers

7220 Group User’s Manual

6-38

Fig. 6.7.13 DA n conversion register (only M37220M3-XXXSP/FP)

b7 b6 b5 b4 b3 b2 b1 b0

DA n conversion register (DAn) (n = 1 and 2) [Address 00DE16, 00DF16]

After reset

R W

DA n Conversion Register

Indeterminate

Name

Functions

DA conversion set

bits

(DAn0–DAn5)

Fix this bit to “0.”

0000

111

1111

: 1/64Vcc

: 2/64Vcc

: 61/64Vcc

: 62/64Vcc

: 63/64Vcc

: 0/64Vcc

Nothing is assigned. This bit is a write disable bit.

When this bit is read out, the value is “ 0.”

R—

Fig. 6.7.14 Horizontal position register

b7 b6 b5 b4 b3 b2 b1 b0

Horizontal position register (HR) [Address 00E016]

Name

Functions

After reset

Horizontal Position Register

6, 7

Horizontal display start

positions (HR0 to HR5)

64 steps (0016 to 3F16)

Nothing is assigned. These bits are write disable bits.

When thses bits are read out, the values are “0.”

R—

Addresses 00DE16, 00DF16

Address 00E016

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