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CS4237B Datasheet(PDF) 18 Page - Cirrus Logic |
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CS4237B Datasheet(HTML) 18 Page - Cirrus Logic |
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18 / 114 page  sor. The RAM allows updates to the core proces- sor functionality. Placing the firmware patches in E 2PROM, gives the maximum functionality at 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. 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. Physical Device Logical Device Best Choice Acceptable Choice 1 Sub optimal Choice 1 Sub optimal Choice 2 WSS 0 ANSI ID = WSS/SB 16-bit address decode WSSbase Length/Alignment 534h-534h 4/4 534-608h 4/D4h 534-FFCh 4/4 high true edge sensitive IRQ 5 (SB share) 5,7,9,11,12,15 (SB share) 5, 7, 9, 11, 12, 15 (SB share) 8-bit, count by byte, type A DMA 1 (SB share) 0, 3 (SB share) 0, 1, 3 (SB share) same DMA 0, 3 0, 1, 3 ---- Synthesis 0 16-bit address decode SYNbase Length/Alignment 388h 4/8 388h 4/8 388-3F8h 4/8 IRQ ---- ---- ---- SB Pro 0 16-bit address decode SBbase Length/Alignment 220h 16/16 220-260h 16/32 220-300h 16/32 Game Port 1 ANSI ID = GAME 16-bit address decode GAMEbase Length/Alignment 200h 8/8 208h 8/8 Control 2 ANSI ID = CTRL 16-bit address decode CTRLbase Length/Alignment 120-3F8h 8/8 IRQ ---- MPU401 3 ANSI ID = MPU 16-bit address decode MPUbase Length/Alignment 330h 2/8 330-360h 2/8 330-3E0h 2/8 IRQ 9 9,11,12,15 ---- ---- Feature not supported in the listed configuration, but is supported through customization. Table 1. Typical Motherboard Plug-and-Play Resource Data DS213PP4 CS4237B 18 |
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