CY7C68000 CYPRESS [Cypress Semiconductor], CY7C68000 Datasheet - Page 7
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CY7C68000
Manufacturer Part Number
CY7C68000
Description
TX2 USB 2.0 UTMI Transceiver
Manufacturer
CYPRESS [Cypress Semiconductor]
Datasheet
1.CY7C68000.pdf
(14 pages)
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Table 5-1. Pin Descriptions (continued)
Document #: 38-08016 Rev. *E
SSOP QFN
13
12
24
35
39
52
23
27
37
49
31
54
47
42
32
2
3
6
4
51
52
55
17
28
32
45
53
16
20
30
42
24
47
40
35
25
6
5
DataBus16_8
XTALIN
XTALOUT
Uni_Bidi
V
V
V
V
V
GND
GND
GND
GND
GND
Reserved
Reserved
Reserved
Reserved
Reserved
CC
CC
CC
CC
CC
Name
Ground
Ground
Ground
Ground
Ground
Output
INPUT
INPUT
INPUT
INPUT
INPUT
Power
Power
Power
Power
Power
Type
Input
Input
Input
[1]
Default
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
PRELIMINARY
Data Bus 16_8. Selects between 8- and 16-bit data transfers.
1–16-bit data path operation enabled. CLK = 30 MHz.
0–8-bit data path operation enabled. When Uni_Bidi = 0, D[8:15] are unde-
fined. When Uni_Bidi =1, D[0:7] are valid on TxValid and D[8:15] are valid
on RxValid. CLK = 60 MHz
Note: DataBus16_8 is static after Power-on Reset (POR) and is only sam-
pled at the end of Reset.
Crystal Input. Connect this signal to a 24-MHz parallel-resonant, funda-
mental mode crystal and 20-pF capacitor to GND.
It is also correct to drive XTALIN with an external 24-MHz square wave
derived from another clock source.
Crystal Output. Connect this signal to a 24-MHz parallel-resonant, funda-
mental mode crystal and 30-pF (nominal) capacitor to GND. If an external
clock is used to drive XTALIN, leave this pin open.
Driving this pin HIGH enables the unidirectional mode when the 8-bit
interface is selected. Uni_Bidi is static after power on reset (POR).
V
V
V
V
V
Ground.
Ground.
Ground.
Ground.
Ground.
Connect pin to Ground.
Connect pin to Ground.
Connect pin to Ground.
Connect pin to Ground.
Connect pin to Ground.
CC
CC
CC
CC
CC
. Connect to 3.3V power source.
. Connect to 3.3V power source.
. Connect to 3.3V power source.
. Connect to 3.3V power source.
. Connect to 3.3V power source.
Description
CY7C68000
Page 7 of 14