THCV235-Q_THCV236-Q_Rev.3.40_E
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2016 THine Electronics, Inc.
THine Electronics, Inc.
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Security E
Table 14.
DE Requirement
Symbol
Parameter Condition
Min
Typ
Max
Unit
tDEH DE=1
Duration
MAINMODE=0
HFSEL=0
2×tTCIP
- - ns
MAINMODE=0
HFSEL=1
4×tTCIP
- - ns
MAINMODE=1
Don’t care
tDEL DE=0
Duration
MAINMODE=0
HFSEL=0
2×tTCIP
- - ns
MAINMODE=0
HFSEL=1
4×tTCIP
- - ns
MAINMODE=1
Don’t care
Hot-Plug Function
HTPDN signal indicates connecting condition between the Transmitter and the Receiver. HTPDN of the
transmitter side is high when the Receiver is not active or not connected. Then Transmitter can enter into the
power down mode. HTPDN is set to low by the Receiver when Receiver is active and connects to the
Transmitter, and then Transmitter must start up and transmit CDR training pattern for link training.
When PDN1 = 0 (Sub-Link Power Down), HTPDN is transferred to Transmitter by HTPDN pin.
HTPDN is open-drain output at the receiver side. Pull-up resistor is needed at the transmitter side.
HTPDN connection between the Transmitter and the Receiver can be omitted as an application option. In this
case, HTPDN at the Transmitter side should always be taken as low.
When PDN1 = 1 (Sub-Link Active), HTPDN is transferred to Transmitter via Sub-Link line.
HTPDN/SUBMODE pin functions as Sub-Link mode select (SUBMODE). HOST MPU can confirm HTPDN
state by reading Sub-Link Master register (0x00 bit0 HTPDN).
Lock Detect Function
LOCKN indicates whether the receiver CDR PLL is in the lock state or not. LOCKN at the Transmitter input is
set to High by pull-up resistor when Receiver is not active or at the CDR PLL training state. LOCKN is set to
low by the Receiver when CDR lock is done. Then the CDR training mode finishes and Transmitter shifts to the
normal operation.
When PDN1 = 0 (Sub-Link Power Down), LOCKN is transferred to Transmitter by LOCKN pin. LOCKN is
open-drain output at the receiver side. Pull-up resistor is needed at the transmitter side.
When HTPDN is included in an application, the LOCKN signal should only be considered when the HTPDN is
pulled low by the Receiver.
When PDN1 = 1 (Sub-Link Active), LOCKN is transferred via Sub-Link line. LOCKN/MSSEL pin functions
as Sub-Link Master/Slave select (MSSEL). HOST MPU can confirm LOCKN state by reading Sub-Link Master
register (0x00 bit1 LOCKN).
