TS8GSSD25S-S
TS16GSSD25S-S/M
TS32GSSD25S-S/M
TS64GSSD25S-S/M
TS128GSSD25S-M
TS192GSSD25S-M
2.5” Solid State Disk
Following calibration the device sends a six burst COMWAKE sequence and then sends a continuous stream of the
ALIGN sequence starting at the device's highest supported speed. After ALIGNP primitives have been sent for 54.6 us
(2048 nominal Gen1 Dword times) without a response from the host as determined by detection of ALIGNP primitives
received from the host, the device assumes that the host cannot communicate at that speed. If additional speeds are
available the device tries the next lower supported speed by sending ALIGNP primitives at that rate for 54.6 us (2048
nominal Gen1 Dword times.) This step is repeated for as many slower speeds as are supported. Once the lowest speed
has been reached without response from the host, the device shall enter an error state.
8. Host locks – after detecting the COMWAKE, the host starts transmitting D10.2 characters at its lowest supported rate.
Meanwhile, the host receiver locks to the ALIGN sequence and, when ready, returns the ALIGN sequence to the device at
the same speed as received. A host shall be designed such that it acquires lock in 54.6 us (2048 nominal Gen1 Dword
times) at any given speed. The host should allow for at least 873.8 us (32768 nominal Gen1 Dword times) after detecting
the release of COMWAKE to receive the first ALIGNP. This insures interoperability with multi-generational and
synchronous designs. If no ALIGNP is received within 873.8 us (32768 nominal Gen1 Dword times) the host restarts the
power-on sequence – repeating indefinitely until told to stop by the Application layer.
9. Device locks – the device locks to the ALIGN sequence and, when ready, sends the SYNCP primitive indicating it is
ready to start normal operation.
10. Upon receipt of three back-to-back non-ALIGNP primitives, the communication link is established and normal operation
may begin.
15
Transcend Information Inc.
V2.4
TRANSCEND [ TRANSCEND INFORMATION. INC. ]
