cs4237b Cirrus Logic, Inc., cs4237b Datasheet - Page 18

• Manufacturer Part Number: cs4237b
• Description: Crystalclear Advanced Audio System With 3d Sound
• Manufacturer: Cirrus Logic, Inc.

sor. The RAM allows updates to the core proces-
sor functionality. Placing the firmware patches
in E
power-up without the need for a software driver.
The firmware patch data is typically included at
the end of the PnP resource data. Crystal pro-
vides a utility that will read in patch data from a
file, and append it to the PnP resource data. The
patch file must be obtained from Crystal.
---- Feature not supported in the listed configuration, but is supported through customization.
18
Physical Device
edge sensitive
16-bit address
8-bit, count by
16-bit address
16-bit address
16-bit address
16-bit address
16-bit address
2
byte, type A
Game Port
Synthesis
PROM, gives the maximum functionality at
high true
MPU401
Control
SB Pro
decode
decode
decode
decode
decode
decode
same
WSS
Length/Alignment
Length/Alignment
Length/Alignment
Length/Alignment
Length/Alignment
Length/Alignment
Logical Device
GAMEbase
CTRLbase
WSSbase
MPUbase
SYNbase
SBbase
Table 1. Typical Motherboard Plug-and-Play Resource Data
DMA
DMA
IRQ
IRQ
IRQ
IRQ
0
0
0
1
2
3
Best Choice
534h-534h
(SB share)
(SB share)
120-3F8h
16/16
388h
220h
200h
330h
0, 3
4/4
4/8
8/8
8/8
2/8
----
----
5
1
9
The Crystal Key
NOTE: The Crystal Key cannot differentiate be-
tween multiple Crystal Codecs in a system;
therefore, ONLY ONE Crystal part is allowed in
systems using the Crystal Key. To allow multiple
parts in a system, the Plug-and-Play isolation se-
quence must be used since it supports multiple
parts via the serial identifier used in the isolation
sequence.
5,7,9,11,12,15
Acceptable
(SB share)
(SB share)
9,11,12,15
Choice 1
534-608h
220-260h
330-360h
0, 1, 3
4/D4h
16/32
388h
208h
0, 3
4/8
----
8/8
2/8
5, 7, 9, 11, 12, 15
Sub optimal
(SB share)
(SB share)
534-FFCh
388-3F8h
330-3E0h
Choice 1
220-300h
0, 1, 3
16/32
4/4
4/8
2/8
----
----
----
ANSI ID = WSS/SB
ANSI ID = GAME
ANSI ID = CTRL
ANSI ID = MPU
Sub optimal
Choice 2
CS4237B
DS213PP4