TeleChips TCC720, User Manual

Page: 51 / 143

TCC720
GPIO PORT
32-bit RISC Microprocessor for Digital Media Player
Dec. 16. 2002
Preliminary Spec 0.51
6 - 6
USB[1:0]
[27:26]
GPIO_B[27:26] Function Select
0 GPIO_B[27:26] pin is working as Normal GPIO Function
3
GPIO_B[27] pin is working as USB D- Port
GPIO_B[26] pin is working as USB D+ Port
DAI[3:0]
[24:21]
GPIO_B[24:21] Function Select
0 GPIO_B[24:21] pin is working as Normal GPIO Function
DAI[3] = 1
DAI[2] = 1
DAI[1] = 1
DAI[0] = 1
GPIO_B[24] pin is working as DAO signal of DAI block
GPIO_B[23] pin is working as MCLK signal of DAI block
GPIO_B[22] pin is working as LRCK signal of DAI block
GPIO_B[21] pin is working as BCLK signal of DAI block
UTX
[8]
GPIO_B[8] Function Select
0 GPIO_B[8] pin is working as Normal GPIO Function
1 GPIO_B[8] : UART TX signal of UART block
NWE
[7]
GPIO_B[7] Function Select
0 GPIO_B[7] pin is working as Normal GPIO Function
1 GPIO_B[7] : ND_nWE (write enable for NAND flash) of memory controller
CS[3:0]
[5:2]
GPIO_B[5:2] Function Select
0 GPIO_B[5:2] pin is working as Normal GPIO Function
CS[3] = 1
CS[2] = 1
CS[1] = 1
CS[0] = 1
GPIO_B[5] : nCS3 or ND_nOE3 of memory controller
GPIO_B[4] : nCS2 or ND_nOE2 of memory controller
GPIO_B[3] : nCS1 or ND_nOE1 of memory controller
GPIO_B[2] : nCS0 or ND_nOE0 of memory controller
SCS
[1]
GPIO_B[1] Function Select
0 GPIO_B[1] pin is working as Normal GPIO Function
1 GPIO_B[1] : SD_nCS (chip select for SDRAM) of memory controller
CKE
[0]
GPIO_B[0] Function Select
0 GPIO_B[0] pin is working as Normal GPIO Function
1 GPIO_B[0] : SD_CKE (clock enable for SDRAM) of memory controller