Crystal CS-4237

The CS4237 was a combined multimedia audio controller and codec with 3D surround capability, introduced in 1997.

	Released	1997
	Bus	ISA 16-bit
	FM Synth	None
	Sample Range	4 - 50 kHz
	Packages	100-pin TQFP (-JQ or -KQ)
	Standards	Sound Blaster, Sound Blaster Pro, Windows Sound System
	Plug & Play	Yes
	See Also	CS-4236

It's essentially the same chip as CS4236B but with SRS surround sound (by SRS Labs) replacing Crystal's own "CrystalClear" 3D audio.

Found on:

• Kentech Music-16 (FCC ID: KJD-MUSIC16)
• SB3202
• AOpen card (FCC ID: IPLAW35)
• Orpheus 1 (Orpheus I is a modern-day sound card for DOS, first released in 2021)
• Orpheus II LT (Orpheus 2 LT is a modern-day sound card for DOS, first released in 2022. It is essentially an Orpheus II without the Interwave chip that provides GUS support)
• Digimate 3D Sound (FCC ID: NBH FSSC-CS2X)

Revisions

The CS4237 is backward-compatible with the CS4232 / CS4232A and CS4236.

There are two revisions of the CS4237:

Rev.0 (non-'B') - Requires DOS initialisation for the MPU-401 to work in Windows
Rev.1 ('B') - No DOS initialisation necessary for MPU-401 to work in Windows

Competition

 

In the Media

 

Setting it Up

Downloads

The drivers below are the generic Crystal drivers for the 4237 and related/compatible models in the CX423x family.

Datasheet Sep 1997	CrystalWare Drivers v1.8, 14 Feb 1997 Extracted from the Turtle Beach Malibu driver disk, believed to be unmodified from the Crystal v1.8 reference drivers.	Windows 3.1 Drivers v1.8, 14 Feb 1997 Compatible with CS4232, CS4236, CS4237B, and CS4238B chipsets.
Windows NT 3.51 and 4.0 Drivers v1.51, 30 Oct 1996 Compatible with CS4232 and CS4236 chipsets	Windows 95 Drivers v1.8, 14 Nov 1996 Compatible with CS4232, CS4236, CS4237B, and CS4238B chipsets.	OS/2 Warp & Merlin Drivers v1.60, 25 Nov 1996 Compatible with CS4231, CS4232, CS4236, CS4237B, and CS4238B chipsets.