YMF744B
February 3, 1999
-41-
F1h: Scan In/ O ut Data
Read / Write
Default: 00h
b7 b6 b5 b4 b3 b2 b1 b0
SCAN DATA
b[7:0] ..........SCAN DATA
This is the data p ort for reading and writing the internal state.
F2h: Current FM Synthesizer Index
Read Only
Default: 00h
b7 b6 b5 b4 b3 b2 b1 b0
Current FM Synthesi zer I ndex
b[7:0] ..........Current FM Synthesizer Index
This register indicates current index of the FM Synthesizer.
F3h: Current FM Synthesizer Array
Read Only
Default: 00h
b7 B6 b5 b4 b3 b2 b1 b0
-------CFA
b0................CFA: Current FM Synthesizer Arary
This bit indicates that the FM Synthesizer array is being currently set to Array 0 or 1.
“0”: Array 0 (default)
“1”: Array 1
F4h: FM Synthesizer / MPU401 Stat us
Read Only
Default: 80h
b7 b6 b5 b4 b3 b2 b1 b0
FFEMP FFFUL -----MPUS
b0................MPUS: MPU401 Status
This bit indicates current MPU401 status.
“0”: Default mode (Intelligent mode) (default)
“1”: UART mode
b6................FFFUL: FM Synthesizer FIFO Full
This bit indicates whether or not FIFO followed by the FM Synthesizer is full.
“0”: not Full (default)
“1”: Full