Card
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Audiotrak Prodigy 7.1 LT
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WM8770 <---> Envy24HT
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WM8770 CL pin 61 <---> Envy24HT GPIO 9 pin 76
WM8770 DI pin 62 <---> Envy24HT GPIO 10 pin 77
WM8770 CE pin 63 <---> Envy24HT GPIO 8 pin 75
WM8770 RESETB pin 64 <---> Envy24HT PRST# pin 105

DI: 2^10=0x400
CL: 2^9=0x200
CE: 2^8=0x100
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GPIO DIR, MASK, STATE
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000 0000 0000 0111 0000 0000	(GPIO DIR: 0x700)
111 1111 1111 1000 1111 1111	(GPIO MASK: 0x7ff8ff)
111 1111 1111 1111 1111 1111	(GPIO STATE: 0x7fffff)
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E2PROM
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SCFG:	0x4b (49.152MHz crystal)
ACL:	0x80
I2S:	0xfc
SPDIF:	0xc3
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