Cirrus Logic CS4970x4 - Manual (Page 24)

DS810
UM6
C
op
yri
ght 2
013
Ci
rru
s
Lo
gic
P
-13
CS49
70x4 Pin Assign
me
nts
CS4953
x4/CS497
0x4 System Desig
ner’s Gu
ide
25 - GPIO25 General Purpose Input/Output
1. UART_TXD
2. EE_CS 1. UART Output.
2. EEPROM Boot Chip Select.
3.3V (5V tol) BiDir IN
26 - GPIO24 General Purpose Input/Output UART_RXD UART Input. 3.3V (5V tol) BiDir IN
27 56 GNDD2 Core ground 0V PWR
28 57
SD_DQM0
SDRAM Data Mask 0 3.3V (5V tol) OUT
29 58 SD_D7 SDRAM Data Bit 7 EXT_D7 Flash Data Bit 7. 3.3V (5V tol) BiDir IN
30 59 SD_D6 SDRAM Data Bit 6 EXT_D6 Flash Data Bit 6. 3.3V (5V tol) BiDir IN
31 60 SD_D5 SDRAM Data Bit 5 EXT_D5 Flash Data Bit 5. 3.3V (5V tol) BiDir IN
32 61 SD_D4 SDRAM Data Bit 4 EXT_D4 Flash Data Bit 4. 3.3V (5V tol) BiDir IN
33 62 VDDIO2 I/O power supply voltage 3.3V PWR
34 63 SD_D3 SDRAM Data Bit 3 EXT_D3 Flash Data Bit 3. 3.3V (5V tol) BiDir IN
35 64 SD_D2 SDRAM Data Bit 2 EXT_D2 Flash Data Bit 2. 3.3V (5V tol) BiDir IN
36 67 GNDIO2 I/O ground 0V PWR
37 65 SD_D1 SDRAM Data Bit 1 EXT_D1 Flash Data Bit 1. 3.3V (5V tol) BiDir IN
38 66 EXT_WE Flash Write Enable 3.3V (5V tol) OUT
39 68 SD_D0 SDRAM Data Bit 0 EXT_D0 Flash Data Bit 0 3.3V (5V tol) BiDir IN
40 69 SD_D15 SDRAM Data Bit 15 EXT_D15 Flash Data Bit 15 3.3V (5V tol) BiDir IN
41 70 SD_D14 SDRAM Data Bit 14 EXT_D14 Flash Data Bit 14 3.3V (5V tol) BiDir IN
42 71 SD_D13 SDRAM Data Bit 13 EXT_D13 Flash Data Bit 13 3.3V (5V tol) BiDir IN
43 72 SD_D12 SDRAM Data Bit 12 EXT_D12 Flash Data Bit 12 3.3V (5V tol) BiDir IN
44 73 VDDIO3 I/O power supply voltage 3.3V PWR
45 74 SD_D11 SDRAM Data Bit 11 EXT_D11 Flash Data Bit 11 3.3V (5V tol) BiDir IN
46 75 SD_D10 SDRAM Data Bit 10 EXT_D10 Flash Data Bit 10 3.3V (5V tol) BiDir IN
47 76 GNDIO3 I/O ground 0V PWR
48 77 SD_D9 SDRAM Data Bit 9 EXT_D9 Flash Data Bit 9 3.3V (5V tol) BiDir IN
49 78 SD_D8 SDRAM Data Bit 8 EXT_D8 Flash Data Bit 8 3.3V (5V tol) BiDir IN
50 79
SD_DQM1
SDRAM Data Mask 1 3.3V (5V tol) OUT
51 80 SD_CLKOUT SDRAM Clock Output 3.3V (5V tol) OUT
52 81 SD_CLKIN SDRAM Clock Input 3.3V (5V tol) In
53 82 SD_CLKEN SDRAM Clock Enable 3.3V (5V tol) OUT
54 83 VDD3 Core power supply voltage 1.8V PWR
55 84 SD_A12 SDRAM Address Bit 12 EXT_A12 Flash Address Bit 12 3.3V (5V tol) OUT
56 85 SD_A11 SDRAM Address Bit 11 EXT_A11 Flash Address Bit 11 3.3V (5V tol) OUT
57 86 GNDD3 Core ground 0V PWR
58 87 SD_A9 SDRAM Address Bit 9 EXT_A9 Flash Address Bit 9 3.3V (5V tol) OUT
59 88 SD_A8 SDRAM Address Bit 8 EXT_A8 Flash Address Bit 8 3.3V (5V tol) OUT
Table P-10. CS4970x4 Pin Assignments (Continued) for 144-Pin and 128-Pin Packages (Continued)
LQFP-
144
Pin #
LQFP-
128
Pin #
Function 1
(Default)
Description of Default Function Secondary Functions Description of Secondary
Functions
Pwr Type
Reset
State