TCC76x
Specification Rev. 0.07
February 23, 2005
32-bit RISC Microprocessor for Digital Media Player
INTRODUCTION
Preliminary
1-11
1.4.2 TCC761 Pin Description
Table 1.3 TCC761 Pin Description
Signal Name
Shared Signal
Pin # Type Description – TCC761
External Memory Interface Pins
SD_CKE
GPIO_B[0]
95
I/O
SDRAM Clock Enable signal. Active high. / GPIO_B[0]
SD_CLK
GPO
77
I/O
SDRAM Clock / GPO. SD_CLK can be used as a general
purpose output. Refer to section “MEMORY CONTROLLER”.
(MCFG register Bit[3] and Bit[1])
SD_nCS
SD_nCLK / GPIO_B[1]
80
I/O
Chip select signal for SDRAM, Active low / Inverted SD_CLK for
DDR SDRAM / GPIO_B[1]
XA[23:22]
DQM[0:1]
68:67
I/O
External Bus Address Bits [23:22] / Data I/O Mask [0:1]
XA[21:20]
DQM[2:3]
66:65
I/O
External Bus Address Bits [21:20] / Data I/O Mask [2:3]
XA[19:18]
DQS[1:0]
61:60
I/O
External BusAddress Bit [19:18] / DDR SDRAM Data Strobe [1:0]
XA[17]
ND_CLE
59
I/O
External Bus Address Bit [17] / CLE for NAND Flash
XA[16]
SD_nRAS / ND_ALE
58
I/O
External Bus Address Bit [16] / SDRAM RAS signal / ALE
for NAND Flash
XA[15]
SD_nCAS
57
I/O
External Bus Address Bit [15] / SDRAM CAS signal
XA[14]
SD_BA[1]
56
I/O
External Bus Address Bit [14] / SDRAM Bank Address 1
XA[13]
SD_BA[0]
55
I/O
External Bus Address Bit [13] / SDRAM Bank Address 0.
XA[12:7]
50:45
XA[6:0]
38:32
I/O
External Bus Address Bits [12:0]
XD[15:9]
20:14,
XD[8:4]
7:3,
XD[3:0]
208:205
I/O
External Bus Data Bit [15:0]
XD[31:24]
GPIO_C[15:8]
76:69
XD[23:16]
GPIO_C[7:0],
31:24
I/O
External Bus Data Bits [31:16] / GPIO_C[15:0]
NCS[3:0]
ND_nOE[3:0] / GPIO_B[5:2]
84:81
I/O
External Bus Chip Select [3:0] / NAND Flash Output Enable
[3:0] / GPIO_B[5:2]
IDE_nCS1
GPIO_B[6]
94
I/O
IDE chip select 1.Active low. / GPIO_B[6]
ND_nWE
GPIO_B[7]
96
I/O
NAND flash WE.Active low. / GPIO_B[7]
nWE
97
I/O
Static Memory Write Enable signal. Active low.
nOE
98
I/O
Static Memory Output Enable signal. Active low.
READY
118
I
Ready information from external device.
USB/UART/IrDA Interface Pins
USB_DP
GPIO_B[26]
88
I/O
USB Function D+ signal / GPIO_B[26]
USB_DN
GPIO_B[27]
89
I/O
USB Function D- signal / GPIO_B[27]
USBH_DP
GPIO_B[28]
90
I/O
USB Host D+ signal / GPIO_B[28]
USBH_DN
GPIO_B[29]
91
I/O
USB Host D- signal / GPIO_B[29]
UT_TX
GPIO_B[8] / SD_nCS
99
I/O
UART or IrDA TX data / GPIO_B[8] / DDR SDRAM Chip
Select
UT_RX
GPIO_B[9] / IDE_nCS1
100
I/O
UART or IrDARX data / GPIO_B[9] / IDE Chip Select 1
Audio Interface Pins
BCLK
GPIO_B[21]
101
I/O
I2S Bit Clock / GPIO_B[21] / Boot Mode Bit 0
LRCK
GPIO_B[22]
102
I/O
I2S Word Clock / GPIO_B[22] / Boot Mode Bit 1
MCLK
GPIO_B[23]
107
I/O
I2S System Clock / GPIO_B[23]
DAO
GPIO_B[24]
108
I/O
I2S Digital Audio data Output / GPIO_B[24] / Boot Mode
Bit 2
DAI
GPIO_B[25]
109
I/O
I2S Digital Audio data Input / GPIO_B[25]
CD DSP Interface Pins
CBCLK
GPIO_B[14]
85
I/O
CD Data Bit Clock Input / GPIO_B[14]
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