M69030 Asiliant Technologies, M69030 Datasheet - Page 330

• Manufacturer Part Number: M69030
• Manufacturer: Asiliant Technologies

Specifications of M69030

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Rad Hardened: No
• Lead Free Status / Rohs Status: Supplier Unconfirmed

17-16
BR09
Transparency Key Register
doubleword-writable, byte/word/doubleword-readable at memory offsets 400024 and C00024
shared by both pipelines A and B
31-24
23-0
`efmp
A
&
B
A
&
B
31
15

Reserved
Source Expansion Background Color & Transparency Key Bits 23-0
69030 Databook
30
14
Source Expansion Background Color &
These bits always return 0 when read.
These 24 bits are optionally used to specify the background color for the color expansion
of monochrome source data (depending on the setting of bit 27 of BR03). When bit 27 of
BR03 is set so that this register is used in the color expansion of monochrome source data,
BR01 is used to specify the background color for the color expansion of monochrome
pattern data.
These 24 bits are also optionally used to specify the key color for whichever form of color
transparency is selected via bits 16-15 of BR04 (depending on the setting of bit 27 of
BR03).
Whether bits 7-0, 15-0 or 23-0 of this register are used in both the color expansion and color
transparency processes depends upon the color depth to which the BitBLT engine has
been set.
29
13
(0000:0000)
Source Expansion Background Color & Transparency Key Bits 15-0
Reserved
28
12
27
11
26
10
25
BitBLT Registers
9
(xxxx:xxxx:xxxx:xxxx)
24
8
Src Expansion Background Color & Transparency Key
23
7
22
6
21
5
(xxxx:xxxx)
Bits 23-16
20
4
19
3
Revision 1.3 11/24/99
18
2
17
1
16
0