TCC76 Datasheet, PDF (150/259 Pages) List of Unclassifed Manufacturers – 32-bit RISC Microprocessor For Digital Media Player

TCC76x
Specification Rev. 0.07
32-bit RISC Microprocessor for Digital Media Player
February 23, 2005
GSIO PORT
Refer to the figure for a basic wave form of GSIO operation.
GSIO Global Control Register (GSGCR)
31 30 29 28 27 26 25 24 23
0
15 14 13 12 11 10 9 8 7
G3 G2 G1 G0 IEN3 IEN2 IEN1 IEN0 FLG3
22
6
FLG2
21
5
FLG1
20
4
FLG0
19
3
Busy3
0x8000070C
18 17 16
210
Busy2 Busy1 Busy0
G[3:0] [15:12] GPIO_B[23:21] Other Function Signal Select
if bit n is 1 (n=0~3) FRM, SCK, SDO of GSIOn can be come out from
GPIO_B[23:21]
*) If multiple bit of G[3:0] is set to 1, the output of each GSIO is ORed and come out from
GPIO_B[23:21]. It is needed to configure the GPIO_B[23:21] as GSIO port to use these output.
IEN[3:0] [11:8]
GSIO Interrupt Enable
if bit n is 1 (n=0~3) Enable GSIOn Interrupt
0
Disable GSIOn Interrupt
*) The master flag to enable GSIO interrupt is GS bit of IEN register in interrupt controller. User
must set that flag ahead as well as these fields.
FLG[3:0] [7:4] Type
GSIO Interrupt Flag
if bit n is 1 (n=0~3)
Indicates that GSIOn operation (read/write) has
R
been completed.
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]
if bit n is 0
if bit n is 1
GSIO Cycle Busy Flag
Indicates that the transmission and reception of GSIOn have
finished, and can process another serial data.
Indicates that the transmission and reception of GSIOn is in
operation, so it cannot process another serial data.
The following figures illustrate the representative waveforms about the various GSIO
operations.
Preliminary
11-4