MSC-MOD20 > timing (UART) > T command > T S / T B

Environment

microSD module: MSC-MOD20 ( http://www.microtechnica-shop.jp/shopdetail/000000000026/ )
  - ALFAT SoC
microSD: 2GB SD (not SDHC) 

ALFAT SoC

• version 2.0.0
• connection: UART > RX, TX, GND

Tool

rs232cTerminal v0.5
http://qiita.com/7of9/items/80e93ec08fe06c5b24a1

Result for T S > share mode

• first after the power on boot
  • TX: 10:59:40.010
  • RX: 10:59:40.026
  • about 16 msec
• 2nd
  • TX: 10:59:40:710
  • RX: 10:59:40.728
  • about 18 msec
• 3rd
  • TX: 10:59:41.310
  • RX: 10:59.41.310
  • about 0 msec?

Result for T B > backup mode

• first after the power on boot
  • TX: 11:02:14.538
  • RX: 11:02.15:439
  • about 900 msec
• 2nd
  • TX: 11:02:15.338
  • RX: 11:02:15.568
  • about 230 msec
• 3rd
  • TX: 11:02:15.938
  • RX: 11:02:16.079
  • about 140 msec

Not constant on the above three cases.