cs4239 Cirrus Logic, Inc., cs4239 Datasheet - Page 18

• Manufacturer Part Number: cs4239
• Description: Crystalclear? Ortable Isa Audio System Logic
• Manufacturer: Cirrus Logic, Inc.

dors and the size may vary according to specific
customer requirements. The maximum size for
resource data supported by the part’s internal
RAM is 384 bytes of combined Hardware Con-
figuration and PnP resource data. With the
addition of the 4-byte header, the maximum
amount of E
bytes. However, the part also supports firmware
upgrades via the E
upgrades, the E
770 bytes. After power-up, the existence of an
E
---- Feature not supported in the listed configuration, but is supported through customization.
18
2
Physical Device
PROM is checked by reading the first two
edge sensitive
16-bit address
8-bit, count by
16-bit address
16-bit address
16-bit address
16-bit address
16-bit address
byte, type A
Game Port
Synthesis
high true
MPU401
Control
SB Pro
decode
decode
decode
decode
decode
decode
same
WSS
2
PROM space used would be 388
2
PROM size must be greater than
2
PROM. To support firmware
Length/Alignment
Length/Alignment
Length/Alignment
Length/Alignment
Length/Alignment
Length/Alignment
Logical Device
GAMEbase
CTRLbase
(playback)
WSSbase
MPUbase
SYNbase
(record)
SBbase
Table 1. Typical Motherboard Plug-and-Play Resource Data
DMA0
DMA1
IRQ
IRQ
IRQ
IRQ
0
0
0
1
2
3
Best Choice
(SB share)
(SB share)
120-FF8h
16/32
534h
388h
220h
200h
330h
0, 3
4/4
4/8
8/8
8/8
2/8
----
----
EISA ID = CSC0000
EISA ID = CSC0001
EISA ID = CSC0010
EISA ID = CSC0003
5
1
9
bytes from the E
two bytes from the E
BBh, then the rest of the E
loaded into the internal RAM. If the first two
bytes aren’t correct, the E
to exist. For motherboard designs, internal de-
fault PnP data is provided or a Hostload
sequence can be used to update the resource
data. If the part is installed on a plug-in card,
then an external E
that the proper PnP resource data is loaded into
the internal RAM prior to a PnP sequence. See
5,7,9,11,12,15
Acceptable
(SB share)
(SB share)
9,11,12,15
Choice 1
220-260h
330-360h
534-FFC
0, 1, 3
16/32
388h
208h
1, 3
4/4
4/8
----
8/8
2/8
CrystalClear Portable ISA Audio System
5, 7, 9, 11, 12, 15
Sub optimal
2
(SB share)
(SB share)
2
534-FFCh
PROM interface. If the first
388-3F8h
330-3E0h
Choice 1
220-300h
PROM is required to ensure
TM
0, 1, 3
16/32
2
4/4
4/8
2/8
----
----
----
PROM port read 55h and
ANSI ID = WSS/SB
ANSI ID = GAME
ANSI ID = CTRL
ANSI ID = MPU
2
PROM is assumed not
2
PROM data is
Sub optimal
Choice 2
CS4239
DS253PP2