This part is not recommended for new designs
Use CY7C68300B EZ-USB AT2LP™ USB2.0 to ATA/ATAPI
Bridge for new designs
CY7C68300A
Table 6-4. Mfg_load Data Format
Byte
0
0
0
0
0
1
1
1
1
1
2
3
4
5
6
Bit(s)
0
3:1
5:4
6
7
0
1
2
3:6
7
7:0
7:0
7:0
7:0
7:0
Reserved
DA[2:0]
CS#[1:0]
Reserved
ARESET#
NDIOW
NDIOR
NDMACK
Reserved
DD[15:0] Three-state (0 = three-state DD pins, 1 = enable DD pins).
DD[7:0]
DD[15:8]
Reserved
Reserved
Reserved
Test/Three-state Control Function
6.1.2.2 Mfg_read
This USB request returns a “snapshot in time” of select
CY7C68300A input pins. The input pin states are bit-wise
mapped to the ATAPI data associated with this request.
CY7C68300A input pins not directly associated with USB
operation can be sampled at any time during Manufacturing
Test Mode operation. See the following table for an expla-
nation of the mfg_read data format. The data length shall
always be eight bytes.
Table 6-5. Mfg_read Data Format
Byte
0
0
0
0
1
1
1
1
1
1
2
3
4
5
6
7
Bit(s)
0
5:1
6
7
2:0
3
4
5
6
7
7:0
7:0
7:0
7:0
7:0
7:0
INTRQ
Reserved. This data should be ignored.
VBUS_PWR_VALID
ARESET# (output value only)
Reserved. This data should be ignored.
IORDY
DMARQ
ATA_EN
Reserved. This data should be ignored.
DD[15:0] Three-state
DD[7:0]
DD[15:8]
Reserved. This data should be ignored.
Reserved. This data should be ignored.
Reserved. This data should be ignored.
Reserved. This data should be ignored.
6.2
Normal Operation Mode
In Normal Operation Mode, the chip behaves as a USB 2.0 to
ATA/ATAPI bridge. This includes all typical USB device states
(powered, configured, etc.). The USB descriptors are returned
according to the values stored in the external EEPROM. An
external EEPROM is required for Mass Storage Class Bulk-
Only Transport compliance, since a unique serial number is
required for each device. Also, Cypress requires customers to
use their own Vendor and Product IDs for final products.
Test/Three-state Control Function
Document #: 38-08031 Rev. *E
Page 8 of 21
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