CY7C68320-56LFXC Cypress Semiconductor Corp, CY7C68320-56LFXC Datasheet - Page 17

• Manufacturer Part Number: CY7C68320-56LFXC
• Description: IC USB 2.0 BRIDGE AT2LP 56VQFN
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB AT2LP™r

Specifications of CY7C68320-56LFXC

• Controller Type: USB 2.0 Controller
• Interface: I²C
• Voltage - Supply: 3.15 V ~ 3.45 V
• Current - Supply: 50mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 56-VQFN Exposed Pad, 56-HVQFN, 56-SQFN, 56-DHVQFN
• For Use With: CY4615B - KIT USB TO ATA REFERENCE DESIGN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.4.2
The mfg_load and mfg_read vendor-specific commands will
be passed down through the bulk pipe in the CBWCB portion
of the CBW. The format of this MFGCB is shown below. Byte
0 is a vendor-specific command designator whose value is
configurable and set in the configuration data. Byte 1 must be
0x27 to identify MfgCB. Byte 2–15 are reserved and must be
set to zero.
The data transfer length will be determined by the CBW Data
Transfer
(dCBWDataTransferLength) of the CBW. The type/direction of
the command is determined by the direction bit specified in
byte 12, bit 7 (bmCBWFlags) of the CBW.
Table 8-3. Example MfgCB
8.4.2.1 Mfg_load
During a mfg_load, the CY7C68300B/CY7C68301B goes into
Manufacturing Test Mode. Manufacturing Test Mode is
provided as a means to implement board or system level inter-
connect tests. During Manufacturing Test Mode operation, all
outputs not directly associated with USB operation are control-
lable. Normal control of the output pins are disabled. Control
of the select AT2LP IO pins and their three-state controls are
mapped to the ATAPI data packet associated with this request.
(See Table 8-4 for an explanation of the required Mfg_load
data format.) This requires a write of seven bytes. To exit
Manufacturing Test Mode, a hard reset (RESET#) is required.
Table 8-4. Mfg_load Data Format
Document 38-08033 Rev. *D
Offset
2–15 2–15 Reserved (must be zero) 0 0 0 0 0 0 0 0
Byte
0
1
0
1
0 bVSCBSignature
(set in configuration bytes)
1 bVSCBSubCommand
(hardcoded 0x27)
MfgCB
MfgCB Byte Description
Bit(s)
Length
5:4
3:1
3:6
7
6
0
7
2
1
0
ARESET#
Reserved
CS#[1:0]
DA[2:0]
Reserved
DD[15:0] Three-state (0 = Hi-Z all DD pins,
1 = drive DD pins).
Reserved
DMACK#
DIOR#
DIOW#
specified
in
Function
bytes
7 6 5 4 3 2 1 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 1 1
8
Bits
through
11
Table 8-4. Mfg_load Data Format (continued)
8.4.2.2 Mfg_read
This USB request returns a “snapshot in time” of select AT2LP
input pins. AT2LP input pins not directly associated with USB
operation, can be sampled at any time during Manufacturing
Test Mode operation. See Table 8-5 for an explanation of the
mfg_read data format. The data length shall always be eight
bytes.
Table 8-5. Mfg_read Data Format
Byte
Byte
0
1
1
2
3
4
5
6
7
2
3
4
5
6
Bit(s)
Bit(s)
5:1
2:0
7:0
7:0
7:6
5:0
7:6
5:0
7:0
7:0
7:0
7:0
7:6
5:0
7:6
5:0
7:0
7
6
0
7
6
5
4
3
CY7C68300B/CY7C68301B
ARESET# (output value only)
VBUS_ATA_ENABLE
Reserved. This data should be ignored.
INTRQ
DD[15:0] Three-state
Reserved. This data should be ignored.
Reserved. This data should be ignored.
DMARQ
IORDY
Reserved. This data should be ignored.
DD[7:0]
DD[15:8]
Reserved
GPIO Output Enable [5:0]
Reserved
GPIO Output Data [5:0]
Reserved. This data should be ignored.
Reserved. This data should be ignored.
DD[7:0]
DD[15:8]
Reserved
GPIO Output Enable [5:0]
Reserved
GPIO Output Data [5:0]
Reserved
CY7C68320/CY7C68321
Function
Data
Page 17 of 36