w83627sf Winbond Electronics Corp America, w83627sf Datasheet - Page 106

• Manufacturer Part Number: w83627sf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

11.9 Extended Control Register (ECR, at "base address + 7")
This 8-bit register provides control settings for Smart Card interface.
Bit 7 – 6: These two bits (BASESEL1 and BASESEL0 respectively) select internal sampling clock base
Bit 5 – 4: These two bits (CLKSEL1 and CLKSEL0 respectively) select frequency of SCCLK.
Bit 3: CLKSTPH. This bit determines SCCLK stuck at high or low after CLKSTP is set to 1. SCCLK
Bit 2: CLKSTP. Setting this bit to 1 will stop SCCLK.
Bit 1: SCDIR. This bit determine direction of SCIO pin. SCIO serves as an input port if SCDIR is 1. It is
Bit 0: WRST. Writing a 1 to this bit issues a warm reset to IC card. It is self-cleared after writing a 1.
multiplier versus baud rate.
stays high if CLKSTPH is equal to 1 and stays low otherwise.
an output port if SCDIR is 0.
7
6
5
4
CLKSEL1, CLKSEL0 SCCLK frequuency
3
BASESEL1, BASESEL0 multiplier
2
00
01
10
11
1
0
00
01
10
11
Warm reset
SCIO direction
CLKSTP
CLKSTPH
SCCLK frequency select bit 0
SCCLK frequency select bit 1
Internal sampling clock base select bit 0
Internal sampling clock base select bit 1
- 99 -
1.5 MHz
12 MHz
3 MHz
6 MHz
14x
16x
18x
16x
Publication Release Date: Nov. 2000
PRELIMINARY
W83627SF
Revision 0.60