TeleChips TCC720, User Manual

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TCC720
GSIO
32-bit RISC Microprocessor for Digital Media Player
Dec. 16. 2002
Preliminary Spec 0.51
10 - 4
FP
[12]
Frame pulse polarity
0 FRM has low active pulse
1 FRM has high active pulse
FRM1
[11:6]
Frame pulse start position
n Frame pulse starts after n base clock has generated
FRM2
[5:0]
Frame pulse end position
n Frame pulse ends after n base clock has generated
GSIO Global Control Register (GSGCR) 0x8000070C
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
G3 G2 G1 G0 IEN3 IEN2 IEN1 IEN0
FLG3 FLG2 FLG1 FLG0
Busy3 Busy2 Busy1 Busy0
G[3:0]
[15:12]
GPIO_B[23:21] Other Function Signal Select
if bit n is 1 FRM, SCK, SDO output of GSIOn is come out from GPIO_B[23:21]
*) If multiple bit of G[3:0] is set to 1, the output of each GSIO is orred and come out from GPIO_B[23:21]
IEN[3:0]
[11:8]
GSIO Interrupt Enable
if bit n is 1 GSIOn Interrupt is enabled
0 GSIOn Interrupt is disabled
FLG[3:0]
[7:4]
R/W GSIO Interrupt Flag
if bit n is 1 R GSIOn operation (read/write) has been completed.
if bit n is 1 W Clear FLG[n] field
*) If an interrupt of a GSIO is enabled, GSIO interrupt is generated when the GSIO operation is completed.
These FLGn can be used to distinguish which GSIO has generated the interrupt. These flags are cleared
by writing “1” at the corresponding flag.
Busy[3:0]
[3:0]
GSIO Cycle Busy Flag
if bit n is 0 GSIOn transmission has finished, and can transmit another serial data.
if bit n is 1 GSIOn transmission is in operation, so it cannot accept another serial data.