Toshiba TLCS-900/H1 Series Manual page 459

3.21.6 Download with USB
(1) Connection example
Figure 3.21.9 shows an example of USB. (16-bit NOR flash is used as program
memory.)
R1 = 1.5 kΩ
PC
R5 =
100 kΩ
Note3
Note 1: The values of pull-up / pull-down resistors are recommended values.
Note 2: The PC6 (KO8, LDIV) pin is assigned as PUCTL (Control to pull-up) for USB. So, note whether it is used as
KO8 or LDIV.
Note 3: Pull-down resistor R2 is used only to fix the level for the flow current. If there is no ON/ OFF control by port for
example, confirm operation by actual setting, and set the value to ensure the USB connection is not cut.
(2) USB interface specification outline
For USB booting, make sure the oscillator is 9 MHz.
The baud rate is fixed at full speed (12 MHz).
The boot function is employed using the following 2 transfer types.
Table 3.21.15 Transfer Types Used by Boot Program
Transfer Type
Control
PUCTL
PC6, KO8, LDIV
R4 =
100 kΩ
R2 = 27 Ω
D+
D−
R3 = 27 Ω
AM0
AM1
Figure 3.21.9
USB Connecting Example
Used as transmitting for standard request or vendor request
Bulk Used as transmitting for vendor request or user program
92CH21-457
P82,
CS 2
P70,
RD
PJ2,
SRWR
TMP92CH21
D0 to D15
A1 to A20
Purpose
TMP92CH21
CE
OE
WE
NOR flash
D0 to D15
A0 to A19
2009-06-19