73S1209F Maxim, 73S1209F Datasheet - Page 24

• Manufacturer Part Number: 73S1209F
• Description: The 73S1209F is a self-contained, SoC smart card reader IC that is an ideal solution for serially connected ISO 7816 design
• Manufacturer: Maxim

24
X12OUT
X12IN
CPUCKDiv
MCount(2:0)
12.00MHz
HOSCen
Figure 3: Clock Generation and Control Circuits
HIGH
XTAL
OSC
SCCKenb
See SC Clock descriptions for more accurate diagram
Prescaler 6bits
Prescaler 6bits
CPU CLOCK
DIVIDER
SC/SCE
CLOCK
CLOCK
SCLK
6 bits
DIVIDE
DIVIDE
by 120
HCLK
by 96
12.00MHz
Phase
Freq
DET
M DIVIDER
/(2*N + 4)
1.5-48MHz
7.386MHz
SELSC
VCO
SEL
MCLK
96MHz
ETU CLOCK
DIVIDER
12 bits
DIVIDER
MPU CLOCK - CPCLK
/93760
SMART CARD LOGIC
BLOCK CLOCK
KEYCLK
1kHz
ETUCLK
SCECLK
I2CCLK
3.6923MHz
CLK1M
SCCLK
I2C_2x
7.386MHz
ICLK
400kHz
800kHz
1MHz
Rev. 1.2